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1. shrink wrap G TD Q DUM PES FO ORO O qe Lm I fo o GEO o SS SRE LEE 5 zd bk ps2 35 7 Ac FEI OO0000D 0000000 0000000 D 00000000 Figure 4 Connect Programming Cable and Power Supply NOTE Be sure to use the programming cable part number 101 0542 supplied with this Development Kit the programming cable has blue shrink wrap around the RS 232 converter section located in the middle of the cable Programming cables with red or clear shrink wrap from other Rabbit Semiconductor kits are not designed to work with RCM4200 modules Connect the other end of the programming cable to a COM port on your PC NOTE Some PCs now come equipped only with a USB port It may be possible to use an RS 232 USB converter Part No 540 0070 with the programming cable supplied with the RCM4200 Development Kit Note that not all RS 232 USB converters work with Dynamic C 10 RabbitCore RCM4200 2 2 4 Connect Power Once all the other connections have been made you can connect power to the Prototyping Board Connect the AC adapter to 3 pin header J1 on the Prototyping Board as shown in Figure 4 above The connector may be attached either way as long as it is not offset to one side the center pin of J1 is always connected to the positive terminal a
2. Header Description Pins Connected Factory Default RxD on header J4 x JS PCI RxD Switch S2 JP6 JP6 12 PCI to Switch S2 n c PCI available on header J2 n TxC on header J4 x TET PC2 TxC LED DS3 JP6 JP8 12 PC2 to LED DS3 n c PC2 available on header J2 JE PC3 to Switch S3 1 2 n PC3 RxC Switch S3 JP10 JP10 L2 RxC on header J4 x n c PC3 available on header J2 JP11 LNO buffer filter to RCM4200 1 2 Connected 1 2 Connected PB2 to LED DS2 x JP12 PB2 LED DS2 n c PB2 available on header J2 JP13 LNI buffer filter to RCM4200 1 2 Connected 1 2 Connected PB3 to LED DS3 x JP14 PB3 LED DS3 n c PB3 available on header J2 JP15 LN2 buffer filter to RCM4200 1 2 Connected 1 2 Connected PB4 to Switch S2 x JP16 PB4 Switch S2 n c PB4 available on header J2 JP17 LN3 buffer filter to RCMA200 1 2 Connected 1 2 Connected PBS to Switch S3 x JP18 PB5 Switch S3 n c PBS available on header J2 JP19 LN4 buffer filter to RCM4200 1 2 Connected JP20 LNS buffer filter to RCM4200 1 2 Connected JP21 LN6 buffer filter to RCM4200 1 2 Connected JP22 LN7 buffer filter to RCM4200 1 2 Connected 112 RabbitCore RCM4200 Table B 6 RCM4200 Prototyping Board Jumper Configurations continued Header Description Pins Connected Factory Default 1 2 Tied to analog ground x JP23 LN4 IN LN6 IN 2 3 Tied to VREF 1 2 Tied to analog ground x JP24 LNO IN L
3. 37 pinout soreness 37 exclusion zone 85 F features n 2 Prototyping Boards 98 99 flash memory addresses user blocks 45 H hardware connections install RCM4200 on Prototyp ing Board 9 power supply 11 programming cable 10 I T O buffer sourcing and sinking LIMITS siriana 91 IP addresses 73 how to set in sample programs RIA IRE IRE 78 how to set PC IP address 79 User s Manual 119 J jumper configurations Prototyping Board 111 JP1 5 V current measure ment 111 JP1 LNO buffer filter to RCM4200 112 JP12 PB2 LED DS2 112 JP13 LN1 buffer filter to RCM4200 112 JP14 PB3 LED DS3 112 JP15 LN2 buffer filter to RCM4200 112 JP16 PB4 Switch S2 112 JP17 LN3 buffer filter to RCM4200 112 JP18 PB5 Switch S2 112 JP19 LN4 buffer filter to RCM4200 112 JP2 3 3 V current mea surement 111 JP20 LN5 buffer filter to RCM4200 112 JP21 LN6 buffer filter to RCM4200 112 JP22 LN7 buffer filter to RCM4200 112 JP23 analog inputs LN4 LN6 configuration 113 JP24 analog inputs LNO LN3 configuration 113 JP3 JP4 PCO TxD LED
4. Negative input is ground T Applies to Prototyping Board t Used for thermistor in sample program gaincode is the gain code of 0 to 7 Gain Code Multiplier iso 0 x1 0 22 5 1 x2 0 11 25 2 x4 0 5 6 3 x5 0 4 5 4 x8 0 2 8 5 x10 0 2 25 6 x16 0 1 41 7 x20 0 1 126 Applies to Prototyping Board RETURN VALUE A voltage value corresponding to the voltage on the analog input channel ADOVERFLOW defined macro 4096 if overflow or out of range ADTIMEOUT defined macro 4095 if conversion is incomplete or busy bit timeout SEE ALSO anaInCalib anaIn anaInmAmps brdInit User s Manual 61 Reads the state of differential analog input channels and uses the previously set calibration constants to convert it to volts PARAMETERS channel is the analog input channel number 0 to 7 corresponding to LNO_IN to LN7_IN channel DIFF Voltage Range V 0 AINO AINI 22 5 to 422 5 1 AINI AINI 2 AIN2 AIN3 22 5 to 22 5 3 AIN3 AIN3 4 AIN4 AIN5 22 5 to 22 5 5 AIN5 AIN5 6 AIN6 AIN7 7 AIN7 AIN7 Accessible on Prototyping Board gaincode is the gain code of 0 to 7 Gain Code Multiplier Eur abor 0 xl 22 5 22 5 x2 11 25 11 25 2 x4 5 6 45 6 3 x5 4 5 44 5 4 x8 2 8 42 8 5 x10 2 25 2 25 6 x16 1 41 1 41 7 x20 1 126 4
5. Follow the remaining steps carefully in Tera Term to avoid overwriting previously saved calibration data when using same the file name e Enable the File APPEND option at the bottom of the dialog box e Select the OPEN option at the right hand side of the dialog box Tera Term is now ready to log all data received on the serial port to the file you specified You are now ready to compile and run this sample program A message will be displayed in the Tera Term display window once the sample program is running Enter the serial number you assigned to your RabbitCore module in the Tera Term display window then press the ENTER key The Tera Term display window will now display the calibration data Now select CLOSE from within the Tera Term LOG window which will likely be a separate pop up window minimized at the bottom of your PC screen This finishes the logging and closes the file Open your data file and verify that the calibration data have been written properly A sample is shown below Serial port transmission Uploading calibration table Enter the serial number of your controller 9MN234 SN9MN234 ADSE 0 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset dl float gain float offset float gain float offset float gain float offset float gain float offset float gai
6. RabbitCore RCM4200 C Programmable Analog Core Module with Serial Flash and Ethernet User s Manual 019 0159 061229 A RabbitCore RCM4200 User s Manual Part Number 019 0159 061229 A Printed in U S A 2006 Rabbit Semiconductor Inc All rights reserved No part of the contents of this manual may be reproduced or transmitted in any form or by any means without the express written permission of Rabbit Semiconductor Permission is granted to make one or more copies as long as the copyright page contained therein is included These copies of the manuals may not be let or sold for any reason without the express written permission of Rabbit Semiconductor Rabbit Semiconductor reserves the right to make changes and improvements to its products without providing notice Trademarks Rabbit and Dynamic C are registered trademarks of Rabbit Semiconductor Inc Rabbit 4000 and RabbitCore are trademarks of Rabbit Semiconductor Inc The latest revision of this manual is available on the Rabbit Semiconductor Web site www rabbit com for free unregistered download Rabbit Semiconductor Inc www rabbit com RabbitCore RCM4200 TABLE OF CONTENTS Chapter 1 Introduction 1 Ld RCMA200 Features e eed ER RHENO D SR PEE ae RR one 2 1 2 Advantages of the RCM4200 enne enne en iin Eea n E nte A ER resins ete nennen en 4 1 3 Development and Evaluation ToolS esee eese eene nennen enne enne nnne eter e
7. If autorun is disabled or the installation does not start use the Windows Start Run menu or Windows Disk Explorer to launch setup exe from the root folder of the CD ROM The installation program will guide you through the installation process Most steps of the process are self explanatory Dynamic C uses a COM serial port to communicate with the target development system The installation allows you to choose the COM port that will be used The default selec tion is COMI You may select any available port for Dynamic C s use If you are not cer tain which port is available select COMI This selection can be changed later within Dynamic C NOTE The installation utility does not check the selected COM port in any way Speci fying a port in use by another device mouse modem etc may lead to a message such as could not open serial port when Dynamic C is started Once your installation is complete you will have up to three new icons on your PC desk top One icon is for Dynamic C another opens the documentation menu and the third is for the Rabbit Field Utility a tool used to download precompiled software to a target system If you have purchased any of the optional Dynamic C modules install them after installing Dynamic C The modules may be installed in any order You must install the modules in the same directory where Dynamic C was installed User s Manual 7 2 2 Hardware Connections There are three steps to conn
8. RXD TXD I O Strobe I1 Timer C1 RCLKF Input Capture Serial Port D 26 PC2 Input Output TXC TXF I O Strobe I2 Timer C2 27 PC3 Input Output RXC TXC RXF I O Strobe I3 Timer C3 SCLKD Input Capture Serial Port C shared by serial flash 28 PC4 Input Output TXB I O Strobe I4 PWMO TCLKE 29 PCS Input Output RXB TXB I O Strobe I5 PWMI RCLKE Input Capture Serial Port B shared by RCMA200 A D converter 30 PC6 Input Output TXA TXE T O Strobe I6 PWM2 31 PC7 Input Output RXA TXA RXE TO Strobe I7 PWM3 SCLKC Input Capture Programming port 32 PEO Input Output I O Strobe IO A20 Timer CO TCLKF INTO QRDIB User s Manual 31 Table 2 RCM4200 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes 33 PEI Input Output T O Strobe I1 A21 Timer C1 RXD RCLKF INTI QRDIA Input Capture 34 PE2 Input Output I O Strobe I2 A22 Timer C2 TXF DREQO QRD2B Ethernet enable 35 PE3 Input Output T O Strobe I3 A23 Timer C3 RXC RXF SCLKD DREQI QRD2A Input Capture 36 PE4 Input Output I O Strobe I4 A0 INTO PWMO TCLKE 37 PES SMODEO Input Output I O Strobe I5 INTI PWMI RXB RCLKE Input Capture PES is the default configuration 38 PE6 SMODEI Input Output I O Strobe I6 PWM2 TXE DREQO PE6
9. 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AIN5 AINS AIN4 AINS 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 Not accessible on Prototyping Board gaincode is the gain code of 0 to 7 Gain Code Multiplier r 0 x1 0 22 5 1 x2 0 11 25 2 x4 0 5 6 3 x5 0 4 5 4 x8 0 2 8 5 x10 0 2 25 6 x16 0 1 41 7 x20 0 1 126 Applies to Prototyping Board User s Manual 59 valuel is the first A D converter channel raw count value voltsl is the voltage or current corresponding to the first A D converter channel value 0 to 20 V or 4 to 20 mA value2 is the second A D converter channel raw count value volts2 is the voltage or current corresponding to the first A D converter channel value 0 to 20 V or 4 to 20 mA RETURN VALUE 0 if successful 1 if not able to make calibration constants SEE ALSO analn anaInVolts anaInmAmps anaInDiff anaInCalib brdInit 60 RabbitCore RCM4200 Reads the state of a single ended analog input channel and uses the previously set calibration constants to convert it to volts PARAMETERS channel is the channel number 0 to 7 corresponding to LNO_IN to LN7_IN Channel Code Single Ended Voltage Ranget Input Lines V 0 AINO 0 22 5 1 AINI 0 22 5 2 AIN2 0 22 5 3 AIN3 0 22 5 4 AIN4 0 22 5 5 AIN5 0 22 5 6 AIN6 0 22 5 7 AIN7 0 21
10. V prescaler Gain V 0 22 528 1 11 0 11 264 2 5 5 0 5 632 4 2 75 0 4 506 5 2 20 0 2 816 8 1 375 0 2 253 10 1 100 0 1 408 16 0 688 0 1 126 20 0 550 User s Manual 107 B 4 3 2 Thermistor Input Analog input LN7_IN on the Prototyping Board was designed specifically for use with a thermistor at JP25 in conjunction with the THERMISTOR C sample program which demon strates how to use the analog input to measure temperature which will be displayed in the Dynamic C STDIO window The sample program is targeted specifically for the thermistor included with the Development Kit with Ro 25 C 3 KQ and B 25 85 3965 Be sure to use the applicable R and p values for your thermistor if you use another thermistor BYREG Inline jumper is 470 Q resistor 3 1kQ TA LN7_IN ADC y RCM4200 gt 22nF AGND ac JP25 Js ehe i 3858 dip SO Thermistor Figure B 7 Prototyping Board Thermistor Input B 4 3 3 A D Converter Calibration To get the best results form the A D converter it is necessary to calibrate each mode single ended or differential for each of its gains It is imperative that you calibrate each of the AID converter inputs in the same manner as they are to be used in the application For example if you will be performing floating differential measurements or differential mea surements using a common analog ground then calibrate th
11. DSi e su n 111 JP5 JP6 PC1 RxD Switch PRE RAE 112 JP7 JP8 PC2 TxC LED DSi 112 JP9 JP10 PC3 RxC Switch S3 112 REMA200 li 95 JP1 LNO or PDO on J2 95 JP10 PE5 or SMODEO output on J2 96 JP11 PE6 or SMODEI output on J2 96 JP12 PE7 or STATUS output on J2 96 JP13 clocked synchronous or programmed I O access to serial flash 96 JP14 clocked synchronous or programmed I O access to serial flash 96 JP15 clocked synchronous or programmed I O access to serial flash 96 JP16 LED DS3 display 96 JP2 LN2 or PD2 on J2 95 JP2 LN6 or PD6 on J2 95 JP4 LN7 or PD7 on J2 95 JP5 LN5 or PD5 on J2 95 JP6 LN4 or PD4 on J2 95 JP7 LN3 or PD3 on J2 96 JP8 data SRAM size 96 JP9 LNI or PDI on J2 96 jumper locations 95 M MAC addresses 74 O onchip encryption RAM how to use 17 P pinout Ethernet port 37 Prototyping Board 103 RCM4200 alternate configurations 30 RCM4200 headers 28 power supplies BEST 3 ort agata 115 battery backup 115 Program Mode 39 switching modes 39 programming cable PROG connector 39 RCMA200 connections 10 programming port 38 Prototyping Board 98 access to
12. Figure A 4 External I O Read and Write Cycles No Extra Wait States NOTE IOCSx can be programmed to be active low default or active high 92 RabbitCore RCM4200 Table A 8 lists the delays in gross memory access time for several values of VDDjo Table A 8 Preliminary Data and Clock Delays Clock to Address Worst Case UE Output Delay Data Setup Spectrum Spreader Delay va ns Time Delay ns e ns 0 5 ns setting 1 ns setting 2 ns setting SOPH i BOPE ESI no dbl dbl no dbl dbl no dbl dbl 3 3 6 8 11 1 2 3 2 3 3 4 5 4 5 9 1 8 18 24 33 3 71 6 5 8 12 11 22 The measurements are taken at the 5096 points under the following conditions e T 40 C to 85 C V VDDjo 10 e Internal clock to nonloaded CLK pin delay 1 ns 85 C 3 0 V The clock to address output delays are similar and apply to the following delays e T the clock to address delay e Tcs the clock to memory chip select delay e Trocsx the clock to I O chip select delay e Tiorp the clock to I O read strobe delay e Tjowg the clock to I O write strobe delay e Tpuren the clock to I O buffer enable delay The data setup time delays are similar for both Tyetyp and Toda When the spectrum spreader is enabled with the clock doubler every other clock cycle is shortened sometimes lengthened by a maximum amount given in the table above The shortening takes place by shortening the high part of the clock If t
13. Rabbit 4000 timing dia STA siria 92 RCM4200 ees 83 dimensions 84 electrical mechanical and environmental 86 relative pin 1 locations 89 spectrum spreader 93 SettIDPS siriana 44 subsystems digital inputs and outputs 28 switching modes 39 T TCP IP primer 71 technical support 13 U USB serial port converter Dynamic C settings 12 user block determining size 49 function calls 49 readUserBlock 45 writeUserBlock 45 reserved area for calibration constants eeeee 49 User s Manual 122 RabbitCore RCM4200 SCHEMATICS 090 0241 RCM4200 Schematic www rabbit com documentation schemat 090 0241 pdf 090 0230 Prototyping Board Schematic www rabbit com documentation schemat 090 0230 pdf 090 0128 Programming Cable Schematic www rabbit com documentation schemat 090 0128 pdf You may use the URL information provided above to access the latest schematics directly User s Manual 123
14. The clock doubler is disabled with a simple config uration macro as shown below 1 Select the Defines tab from the Dynamic C Options gt Project Options menu 2 Add the line CLOCK_DOUBLED 0 to always disable the clock doubler The clock doubler is enabled by default and usually no entry is needed If you need to specify that the clock doubler is always enabled add the line CLOCK _DOUBLED 1 to always enable the clock doubler 3 Click OK to save the macro The clock doubler will now remain off whenever you are in the project file where you defined the macro 4 5 2 Spectrum Spreader The Rabbit 4000 features a spectrum spreader which helps to mitigate EMI problems The spectrum spreader is on by default but it may also be turned off or set to a stronger setting The means for doing so is through a simple configuration macro as shown below 1 Select the Defines tab from the Dynamic C Options gt Project Options menu 2 Normal spreading is the default and usually no entry is needed If you need to specify normal spreading add the line ENABLE SPREADER 1 For strong spreading add the line ENABLE SPREADER 2 To disable the spectrum spreader add the line ENABLE SPREADER 0 NOTE The strong spectrum spreading setting is not recommended since it may limit the maximum clock speed or the maximum baud rate It is unlikely that the strong set ting will be used in a real application 3 Click OK to save the macro The spectru
15. User s Manual 13 14 RabbitCore RCM4200 3 RUNNING SAMPLE PROGRAMS To develop and debug programs for the RCM4200 and for all other Rabbit Semiconductor hardware you must install and use Dynamic C This chapter provides a tour of its major features with respect to the RCM4200 3 1 Introduction To help familiarize you with the RCM4200 modules Dynamic C includes several sample programs Loading executing and studying these programs will give you a solid hands on overview of the RCM4200 s capabilities as well as a quick start with Dynamic C as an application development tool NOTE The sample programs assume that you have at least an elementary grasp of ANSI C If you do not see the introductory pages of the Dynamic C User s Manual for a sug gested reading list In order to run the sample programs discussed in this chapter and elsewhere in this manual 1 Your module must be plugged in to the Prototyping Board as described in Chapter 2 Getting Started 2 Dynamic C must be installed and running on your PC 3 The programming cable must connect the programming header on the module to your PC 4 Power must be applied to the module through the Prototyping Board Refer to Chapter 2 Getting Started if you need further information on these steps To run a sample program open it with the File menu if it is not still open then compile and run it by pressing F9 Each sample program has comments that descri
16. the Dynamic Host Configuration Protocol DHCP The RCM4200 modules can use such IP addresses to send and receive packets on the Internet but you must take into account that this IP address may only be valid for the duration of the call or for a period of time and could be a private IP address that is not directly accessible to others on the Internet These addresses can be used to perform some Internet tasks such as sending e mail or browsing the Web but it is more difficult to participate in conversations that originate elsewhere on the Internet If you want to find out this dynamically assigned IP address under Windows NT or later you can run the ipconfig command Start gt Run gt cmd while you are connected and look at the interface used to connect to the Internet Many networks use IP addresses that are assigned using DHCP When your computer comes up and periodically after that it requests its networking information from a DHCP server The DHCP server may try to give you the same address each time but a fixed IP address is usually not guaranteed If you are not concerned about accessing the RCM4200 from the Internet you can place the RCM4200 on the internal network using an IP address assigned either statically or through DHCP User s Manual 75 6 3 Placing Your Device on the Network In many corporate settings users are isolated from the Internet by a firewall and or a proxy server These devices attempt to secure the company
17. 4 4 1 RS 232 RS 232 serial communication on header J4 on both Prototyping Boards is supported by an RS 232 transceiver installed at U3 This transceiver provides the voltage output slew rate and input voltage immunity required to meet the RS 232 serial communication protocol Basically the chip translates the Rabbit 4000 s signals to RS 232 signal levels Note that the polarity is reversed in an RS 232 circuit so that a 3 3 V output becomes approxi mately 10 V and 0 V is output as 10 V The RS 232 transceiver also provides the proper line loading for reliable communication RS 232 can be used effectively at the RCM4200 module s maximum baud rate for distances of up to 15 m RS 232 flow control on an RS 232 port is initiated in software using the serX 1owcon trolon function call from RS232 LIB where X is the serial port C or D The locations of the flow control lines are specified using a set of five macros SERX_RTS_PORT Data register for the parallel port that the RTS line is on e g PCDR SERA RTS SHADOW Shadow register for the RTS line s parallel port e g PCDRShadow SERA RTS BIT The bit number for the RTS line SERA CTS PORT Data register for the parallel port that the CTS line is on e g PCDRShadow SERA CTS BIT The bit number for the CTS line Standard 3 wire RS 232 communication using Serial Ports C and D is illustrated in the following sample code define CINBUFSIZE 15 set size of circular buffer
18. A conversion is started by an active rising edge on the CONVERT pin The CONVERT pin must stay low for at least two CCLK periods before going high for at least two CCLK periods Figure 12 shows the timing of a conversion start The double falling arrow on CCLK indicates the actual start of the conversion cycle Conversion starts BUSY MEE CONV Figure 12 Timing Diagram for Conversion Start Using CONVERT Pin Appendix B explains the implementation examples of these features on the Prototyping Board 42 RabbitCore RCM4200 4 4 1 A D Converter Power Supply The analog section is isolated from digital noise generated by other components by way of a low pass filter composed of C1 L1 and C86 on the RCM4200 as shown in Figure 13 The V analog power supply powers the A D converter chip 3 3 V V L1 L C1 C86 7100 nF la nF Figure 13 Analog Supply Circuit User s Manual 43 4 5 Other Hardware 4 5 1 Clock Doubler The RCM4200 takes advantage of the Rabbit 4000 microprocessor s internal clock doubler A built in clock doubler allows half frequency crystals to be used to reduce radiated emissions The 58 98 MHz frequency specified for the RCM4200 model is generated using a 29 49 MHz crystal The clock doubler may be disabled if 58 98 MHz clock speeds are not required Disabling the Rabbit 4000 microprocessor s internal clock doubler will reduce power consumption and further reduce radiated emissions
19. Code Multiplier 0 xl 1 x2 2 x4 3 x5 4 x8 3 x10 6 x16 7 x20 Channel Code ibd impur Channel Code Me e 0 AINO AINI 8 AINO AINO 1 AIN2 AIN3 9 AINI AINI 2 AIN4 AINS 10 AIN2 AIN2 31 AIN6 AIN7 11 AIN3 AIN3 4 AINO AINI 12 AIN4 AIN4 5 AIN2 AIN3 13 AINS AINS 6 AIN4 AINS 14 AIN6 AIN6 T AIN6 AIN7 15 AIN7 AIN7 Negative input is ground T Not accessible on Prototyping Board t Not accessible on Prototyping Board len the output bit length is always 12 for 11 bit conversions 56 RabbitCore RCM4200 RETURN VALUE A value corresponding to the voltage on the analog input channel 0 2047 for 11 bit conversions bit 12 for sign 1 overflow or out of range 2 conversion incomplete busy bit timeout SEE ALSO anaInConfig anaIn brdInit User s Manual 57 Reads the value of an analog input channel using the Direct Mode method of addressing the A D converter Note that it takes about 1 second to ensure an internal capacitor on the A D converter is charged when the function is called the first time PARAMETERS channel is the channel number 0 to 7 corresponding to LNO IN to LN7_IN opmode is the mode of operation SINGLE single ended input DIFF differential input mAMP 4 20 mA input channel SINGLE DIFF mAMP 0 AINO AINO AINI AINO 1 AINI AINI AINO AIN1 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AI
20. EE E VES EBPN EENE RE A ie 25 Chapter 4 Hardware Reference 27 4 1 RCM4200 Digital Inputs and Outputs io 28 AA Memory VO Interface ceteri aprieta ienasi agaaa Intra 34 4 1 2 Other Inputs and OUtputs iter entes iii iii iii 34 4 2 Serial Communication ii 35 42 Serial Potts utet be tete ete iie ea 35 42 1 1 Using the Serial Ports stetit etr eireas aa ettet tire eet beca be Elena nto 36 42 2 Ethernet Poft te prete tirer EE PERREEN ENI e REUS MEER EE RAE be e Eo oae EE E RENE AYER En ERE IO 37 4 2 3 Programming POL sss c X 38 2 5 Prosramtinp Cable tenete e ete ue EIER MR PEE UNE 39 4 3 1 Changing Between Program Mode and Run Mode 39 4 3 2 Standalone Operation of the RCM4200 i 40 User s Manual 4 4 A D Converter RCMA200 only ii 41 44 T A D Converter Power Supply 5 oett i ana aan 43 AD Other Hardware sarai eterne ee ER eR tuiiesdeeed E oth coi eee eee er EEN R SES 44 4 51 Clock Doubler 2 4 eodsacc 850s ob Sensands T RIA RAR ni 44 4 5 2 Spectrum Spreader oett center ti eee tete se Mees e E SEP eee e D RE Fe eret bee ee 44 4 6 Memory esee eie eene sea ode Dei 45 COMMI aa ii anali M 45 4 6 2 Flash EPROM gr AIAR Ia AA ee tape ep queda e EP 45 46 3 Serial Elash cime RT RESET TRU RR ERO ERI 45 Chapter 5 Software Reference 47 5 T
21. I O lines with low power modes down to 2 kHz Up to six CMOS compatible serial ports four ports are configurable as a clocked serial ports SPI and two ports are configurable as SDLC HDLC serial ports Combinations of up to eight single ended or four differential 12 bit analog inputs RCM4200 only Alternate I O bus can be configured for 8 data lines and 6 address lines shared with parallel I O lines I O read write 512K flash memory 512K SRAM and a fixed mass storage flash memory option that may be used with the standardized directory structure supported by the Dynamic C FAT File System module Real time clock Watchdog supervisor RabbitCore RCM4200 There are two RCM4200 production models Table 1 summarizes their main features Table 1 RCM4200 Features mass data storage 8 Mbytes serial flash Feature RCM4200 RCM4210 Microprocessor Rabbit 4000 at 58 98 MHz Rabbit 4000 at 29 49 MHz Data SRAM 512K si recs 512K u Flash Memory program 512K Flash Memory 4 Mbytes serial flash A D Converter 12 bits Serial Ports 4 high speed CMOS compatible ports all 4 configurable as asynchro nous with IrDA 4 as clocked serial SPI 1 asynchronous clocked serial port shared with programming port 1clocked serial port shared with serial flash 1 clocked serial port shared with A D converter 5 high speed CMOS compatible ports all 5 confi
22. bug fixes are available from time to time Check the Web site www rabbit com support for the latest patches workarounds and bug fixes 5 3 1 Add On Modules Dynamic C installations are designed for use with the board they are included with and are included at no charge as part of our low cost kits Rabbit Semiconductor offers for purchase add on Dynamic C modules including the popular uC OS II real time operating system as well as PPP Advanced Encryption Standard AES FAT file system Rabbit Web and other select libraries NOTE Version 2 10 or later of the Dynamic C FAT file system module is required for the RCM4200 modules Each Dynamic C add on module has complete documentation and sample programs to illustrate the functionality of the software calls in the module Visit our Web site at www rabbit com for further information and complete documentation for each module In addition to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase 68 RabbitCore RCM4200 6 USING THE TCP IP FEATURES 6 1 TCP IP Connections Programming and development can be done with the RCM4200 without connecting the Ethernet port to a network However if you will be running the sample programs that use the Ethernet capability or will be doing Ethernet enabled development you should connect the RCM4200 module s Ethernet port at this time Before proceeding y
23. debug an application on an RCM4200 comment out the CL FORCE MASTER MODE macro or set it to 0 NOTE Instead of defining this macro is your application you may simply add the line CL FORCE MASTER MODE 1 under the Dynamic C Options gt Project Options Defines tab then click OK When you recompile your program this will have the same effect as setting the macro to 1 within the CLONECONFIG LIB library See Technical Note TN207 Rabbit Cloning Board for additional information on Rabbit Semiconductor s cloning board and how cloning is done 50 RabbitCore RCM4200 5 2 6 Serial Flash Drivers The Dynamic C LIB SerialFlash SFLASH LIB and LIB SerialFlash SFLASH FAT LIB libraries provide the function calls needed to use the serial flash The FAT file system function calls are in the Dynamic C LIB FileSystem FAT CONFIG LIB library User s Manual 51 5 2 7 Prototyping Board Function Calls The functions described in this section are for use with the Prototyping Board features The source code is in the Dynamic C LIB RCM4xxx RCM42xx LIB library if you need to modify it for your own board design NOTE The analog input function calls are supported only by the RCM4200 model since the RCM4210 does not have an A D converter The sample programs in the Dynamic C SAMPLES RCM4200 folder llustrate the use of the function calls Other generic functions applicable to all devices based on Rabbit microprocessors are described in the Dy
24. features and the A D converter on the RCM4200 model are in the Dynamic C LIB RCM4xxx ADC_ADS7870 LIB library Dynamic C v 10 07 or later is required to use the A D converter function calls Use this function to configure the A D converter This function will address the A D converter in Register Mode only and will return an error if you try the Direct Mode Appendix B 4 3 provides additional addressing and command information ADS7870 Signal ADS7870 State RCM4200 Function State LNO Input AINO LNI Input AINI LN2 Input AIN2 LN3 Input AIN3 LN4 Input AIN4 LN5 Input AINS LN6 Input AING LN7 Input AIN7 RESET Input Board reset device RISE FALL Input Pulled up for SCLK active on rising edge PIOO Input Pulled down PIO1 Input Pulled down PIO2 Input Pulled down PIO3 Input Pulled down CONVERT Input Pulled down when not driven BUSY Output PEO pulled down logic high state converter is busy CCLKCNTRL Input Pulled down 0 state sets CCLK as input CCLK Input Pulled down external conversion clock SCLK Input PBO serial data transfer clock SDI Input PC4 3 wire mode for serial data input SDO Output PCS serial data output CS driven CS Input BUFEN pulled up active low enables serial interface BUFIN Input Driven by VREF VREF Output Connected to BUFIN and BUFOUT BUFOUT Output Driven by VREF 54 RabbitCore RCM4200 PARAMETERS instructionbyte is
25. from unauthorized network traffic and usually work by disallowing traffic that did not originate from inside the net work If you want users on the Internet to communicate with your RCM4200 you have several options You can either place the RCM4200 directly on the Internet with a real Internet address or place it behind the firewall If you place the RCM4200 behind the fire wall you need to configure the firewall to translate and forward packets from the Internet to the RCM4200 76 RabbitCore RCM4200 6 4 Running TCP IP Sample Programs We have provided a number of sample programs demonstrating various uses of TCP IP for networking embedded systems These programs require you to connect your PC and the RCMA200 module together on the same network This network can be a local private net work preferred for initial experimentation and debugging or a connection via the Internet RCM4200 System RCM4200 System User s PC A Ethernet crossover Doe To additional cable network Direct Connection Mor CUPIS network of 2 computers Direct Connection Using a Hub User s Manual 77 6 4 1 How to Set IP Addresses in the Sample Programs With the introduction of Dynamic C 7 30 we have taken steps to make it easier to run many of our sample programs You will see a TCPCONFIG macro This
26. on your PC and will display a small square bouncing around in a box 2 3 2 Troubleshooting If you receive the message No Rabbit Processor Detected the programming cable may be connected to the wrong COM port a connection may be faulty or the target system may not be powered up First check to see that the power LED on the Prototyping Board is lit If the LED is lit check both ends of the programming cable to ensure that it is firmly plugged into the PC and the programming port on the Prototyping Board Ensure that the module is firmly and correctly installed in its connectors on the Prototyping Board If Dynamic C appears to compile the BIOS successfully but you then receive a communi cation error message when you compile and load a sample program it is possible that your PC cannot handle the higher program loading baud rate Try changing the maximum download rate to a slower baud rate as follows e Locate the Serial Options dialog in the Dynamic C Options gt Project Options gt Communications menu Select a slower Max download baud rate If a program compiles and loads but then loses target communication before you can begin debugging it is possible that your PC cannot handle the default debugging baud rate Try lowering the debugging baud rate as follows e Locate the Serial Options dialog in the Dynamic C Options gt Project Options gt Communications menu Choose a lower debug baud rate If there are no faults with the har
27. only with Development Kits sold for the North American market A header plug leading to bare leads is provided to allow overseas users to connect their own power supply with a DC output of 8 30 V at 8 W 10 pin header to DB9 programming cable with integrated level matching circuitry 10 pin header to DB9 serial cable Dynamic C CD ROM with complete product documentation on disk Getting Started instructions A bag of accessory parts for use on the Prototyping Board Rabbit 4000 Processor Easy Reference poster Registration card Programming l Cable AC Adapter North American kits only Accessory Parts for Prototyping Board RabbitCore RCM4200 Getting Started Prototyping Board Instructions Figure 1 RCM4200 Development Kit User s Manual 1 3 2 Software The RCM4200 is programmed using version 10 09 or later of Dynamic C A compatible version is included on the Development Kit CD ROM Rabbit Semiconductor also offers add on Dynamic C modules containing the popular u C OS II real time operating system the FAT file system as well as PPP Advanced Encryption Standard AES and other select libraries In addition to the Web based technical support included at no extra charge a one year telephone based technical support module is also available for purchase Visit
28. other devices based on the Rabbit microprocessor Chapter 5 describes the libraries and function calls related to the RCM4200 5 1 More About Dynamic C Dynamic C has been in use worldwide since 1989 It is specially designed for program ming embedded systems and features quick compile and interactive debugging A com plete reference guide to Dynamic C is contained in the Dynamic C User s Manual You have a choice of doing your software development in the flash memory or in the static SRAM included on the RCMA200 The flash memory and SRAM options are selected with the Options Program Options Compiler menu The advantage of working in RAM is to save wear on the flash memory which is limited to about 100 000 write cycles The disadvantage is that the code and data might not both fitin RAM NOTE An application can be compiled directly to the battery backed data SRAM on the RCMA200 module but should be run from the fast SRAM after the serial programming cable is disconnected Your final code must always be stored in flash memory for reliable operation RCM4200 modules have a fast program execution SRAM that is not battery backed Select Code and BIOS in Flash Run in RAM from the Dynamic C Options Project Options Compiler menu to store the code in flash and copy it to the fast program execution SRAM at run time to take advantage of the faster clock speed This option optimizes the performance of RCM4200 modules running at 58 98 MH
29. our Web site at www rabbit com or contact your Rabbit Semiconductor sales representative or authorized distributor for further information 1 3 3 Online Documentation The online documentation is installed along with Dynamic C and an icon for the docu mentation menu is placed on the workstation s desktop Double click this icon to reach the menu If the icon is missing use your browser to find and load default htm in the docs folder found in the Dynamic C installation folder The latest versions of all documents are always available for free unregistered download from our Web sites as well 6 RabbitCore RCM4200 2 GETTING STARTED This chapter describes the RCM4200 hardware in more detail and explains how to set up and use the accompanying Prototyping Board NOTE This chapter and this manual assume that you have the RCM4200 Analog or the RCM4200 Development Kit If you purchased an RCM4200 or RCM4200 module by itself you will have to adapt the information in this chapter and elsewhere to your test and development setup 2 1 Install Dynamic C To develop and debug programs for the RCM4200 series of modules and for all other Rabbit Semiconductor hardware you must install and use Dynamic C If you have not yet installed Dynamic C version 10 09 or a later version do so now by inserting the Dynamic C CD from the Development Kit in your PC s CD ROM drive If autorun is enabled the CD installation will begin automatically
30. screen describing the operation 6 6 Running Additional Sample Programs With Direct Connect The following sample programs are in the Dynamic C SAMPLES RCM4200 TCPIP folder e BROWSELED C This program demonstrates a basic controller running a Web page Two device LEDs are created along with two buttons to toggle them Users can use their Web browser to change the status of the lights The DS2 and DS3 LEDs on the Prototyping Board will match those on the Web page As long as you have not modified the TCPCONFIG 1 macro in the sample program enter the following server address in your Web browser to bring up the Web page served by the sample program http 10 10 6 100 Otherwise use the TCP IP settings you entered in the TCP_CONFIG LIB library e PINGLED C This program demonstrates ICMP by pinging a remote host It will flash LEDs DS2 and DS3 on the Prototyping Board when a ping is sent and received e SMTP C This program demonstrates using the SMTP library to send an e mail when the S2 and S3 switches on the Prototyping Board are pressed LEDs DS2 and DS3 on the Prototyping Board will light up when e mail is being sent 80 RabbitCore RCM4200 6 7 Where Do I Go From Here NOTE If you purchased your RCM4200 through a distributor or through a Rabbit Semi conductor partner contact the distributor or partner first for technical support If there are any problems at this point e Use the Dynamic C Help menu to get further as
31. single random value clear set to zero all the bytes in a speci fied page set all bytes on the specified page to a given value or save user specified text to a selected page 18 RabbitCore RCM4200 3 2 2 Serial Communication The following sample programs are found in the SAMPLES RCM4200 SERIAL folder e FLOWCONTROL C This program demonstrates how to configure Serial Port D for CTS RTS flow control with serial data coming from Serial Port C TxC at 115 200 bps The serial data received are displayed in the STDIO window To set up the Prototyping Board you will need to tie TxD and RxD together on the RS 232 header at J4 and you will also tie TxC and EC RxC together using the jumpers supplied in the Development Kit as TES a shown in the diagram A repeating triangular pattern should print out in the STDIO window The program will periodically switch flow control on or off to demonstrate the effect of flow control If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable and reset the sending board so that the module is operating in the Run mode Connect TxC TxD and GND on the sending board to RxC RxD and GND on the other board then with the programming cable attached to the other module run the sample program e PARITY C This program demonstrates the use of parity modes by repeatedly sending byte values 0 1
32. the instruction byte that will initiate a read or write operation at 8 or 16 bits on the designated register address For example checkid anaInConfig 0x5F 0 9600 read ID and set baud rate cmd are the command data that configure the registers addressed by the instruction byte Enter 0 if you are performing a read operation For example i anaInConfig 0x07 0x3b 0 write ref osc reg and enable baud is the serial clock transfer rate of 9600 to 57 600 bps baud must be set the first time this function is called Enter 0 for this parameter thereafter for example anaInConfig 0x00 0x00 9600 resets device and sets baud RETURN VALUE 0 on write operations data value on read operations SEE ALSO anaInDriver anaIn brdInit User s Manual 55 Reads the voltage of an analog input channel by serial clocking an 8 bit command to the A D converter by its Direct Mode method This function assumes that Model most significant byte first and the A D converter oscillator have been enabled See anaInConfig for the setup The conversion begins immediately after the last data bit has been transferred An exception error will occur if Direct Mode bit D7 is not set PARAMETERS cmd contains a gain code and a channel code as follows D7 1 D6 D4 Gain Code D3 D0 Channel Code Use the following calculation and the tables below to determine emd cmd 0x80 gain code 16 channel code Gain
33. with respect to analog ground User s Manual 41 If a device such as a battery is connected across two channels for a differential measurement and it is not referenced to analog ground then the current from the device will flow through both sets of attenuator resistors without flowing back to analog ground as shown in Figure 11 This will generate a negative voltage at one of the Figure 11 Current Flow from Ungrounded or Floating Source inputs LNI which will almost certainly lead to inaccurate A D conversions To make such differential measurements connect the R1 resistors to the A D converter s internal reference voltage which is software configurable for 1 15 V 2 048 V or 2 5 V This internal reference voltage is available on pin 49 of header J3 as VREF and allows you to convert analog input voltages that are negative with respect to analog ground NOTE The amplifier inside the A D converter s internal voltage reference circuit has a very limited output current capability The internal buffer can source up to 20 mA and sink only up to 20 uA Use a separate buffer amplifier if you need to supply any load current The A D converter s CONVERT pin is available on pin 48 of header J3 and can be used as a hardware means of forcing the A D converter to start a conversion cycle at a specific time The CONVERT signal is an edge triggered event and has a hold time of two CCLK periods for debounce
34. with the essentials that you need to design your own microprocessor based system and includes a complete Dynamic C software development sys tem The Development Kits also contains a Prototyping Board that will allow you to evaluate the specific RCM4200 module and to prototype circuits that interface to the module You will also be able to write and test software for the RCM4200 modules Throughout this manual the term RCM4200 refers to the complete series of RCM4200 RabbitCore modules unless other production models are referred to specifically The RCM4200 has a Rabbit 4000 microprocessor operating at up to 58 98 MHz static RAM flash memory serial flash mass storage option an 8 channel A D converter two clocks main oscillator and timekeeping and the circuitry necessary for reset and man agement of battery backup of the Rabbit 4000 s internal real time clock and 512K of static RAM One 50 pin header brings out the Rabbit 4000 I O bus lines parallel ports A D converter channels and serial ports The RCMA200 receives its 3 3 V power from the customer supplied motherboard on which it is mounted The RCM4200 can interface with all kinds of CMOS compatible digital devices through the motherboard User s Manual 1 1 RCM4200 Features Small size 1 84 x 2 42 x 0 84 47 mm x 61 mm x 21 mm Microprocessor Rabbit 4000 running at up to 58 98 MHz Up to 33 general purpose I O lines configurable with up to four alternate functions 3 3 V
35. 0 10 6 101 Netmask 255 255 255 0 Default gateway 10 10 6 1 4 Click OK or Closes to exit the various dialog boxes RCM4200 IP 10 10 6 101 System Netmask 255 255 255 0 User s PC Ethernet crossover cable Direct Connection PC to RCM4200 Module User s Manual 79 6 5 Run the PINGME c Sample Program Connect the crossover cable from your computer s Ethernet port to the RCM4200 mod ule s RJ 45 Ethernet connector Open this sample program from the SAMPLES TCPIP ICMP folder compile the program and start it running under Dynamic C The crossover cable is connected from your computer s Ethernet adapter to the RCM4200 modules RJ 45 Ethernet connector When the program starts running the green LINK light on the RCM4200 module should be on to indicate an Ethernet connection is made Note If the LNK light does not light you may not be using a crossover cable or if you are using a hub with straight through cables perhaps the power is off on the hub The next step is to ping the module from your PC This can be done by bringing up the MS DOS window and running the pingme program ping 10 10 6 101 or by Start gt Run and typing the entry ping 10 10 6 101 Notice that the yellow ACT light flashes on the RCM4200 module while the ping is taking place and indicates the transfer of data The ping routine will ping the module four times and write a summary message on the
36. 00 6 2 TCP IP Primer on IP Addresses Obtaining IP addresses to interact over an existing operating network can involve a num ber of complications and must usually be done with cooperation from your ISP and or network systems administrator For this reason it is suggested that the user begin instead by using a direct connection between a PC and the RCM4200 using an Ethernet crossover cable or a simple arrangement with a hub A crossover cable should not be confused with regular straight through cables In order to set up this direct connection the user will have to use a PC without networking or disconnect a PC from the corporate network or install a second Ethernet adapter and set up a separate private network attached to the second Ethernet adapter Disconnecting your PC from the corporate network may be easy or nearly impossible depending on how it is set up If your PC boots from the network or is dependent on the network for some or all of its disks then it probably should not be disconnected If a second Ethernet adapter is used be aware that Windows TCP IP will send messages to one adapter or the other depending on the IP address and the binding order in Microsoft products Thus you should have different ranges of IP addresses on your private network from those used on the cor porate network If both networks service the same IP address then Windows may send a packet intended for your private network to the corporate network A si
37. 000 microprocessor used in the RCM4200 are configurable and so the factory defaults can be reconfigured Table 2 lists the Rabbit 4000 factory defaults and the alternate configurations User s Manual 29 Table 2 RCM4200 Pinout Configurations Pin Pin Name Default Use Alternate Use Notes 1 3 3 V_IN 2 GND Reset output from Reset 3 RES_OUT Reset output Reset input Generator or external reset input 4 IORD Input External I O read strobe 5 IOWR Output External I O write strobe 6 RESET IN Input Input to Reset Generator 7 VBAT EXT Battery input Slave port data bus SD7 SDO 8 15 PA 0 7 Input Output External I O data bus ID7 IDO SCLKB SCLKB used by RCM4200 16 PBO Input Output A D converter see External I O Address IA6 Section 4 2 1 SCLKA 17 PBI Input Output Programming port CLKA External I O Address IA7 18 PB2 Input Output 2 uibus d External I O Address IAO 19 PB3 Input Output PRU iti External I O Address IA1 SAO 20 PB4 Input Output External I O Address IA2 21 PB5 Input Output ia DILE External I O Address IA3 ISCS 22 PB I tput i ome External I O Address IA4 ISLAVATN 23 PB7 Input Output External I O Address IA5 30 RabbitCore RCM4200 Table 2 RCM4200 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes 24 PCO Input Output TXD I O Strobe IO Timer CO TCLKF 25 PCI Input Output
38. 1 126 Applies to Prototyping Board RETURN VALUE A voltage value corresponding to the voltage differential on the analog input channel ADOVERFLOW defined macro 4096 if overflow or out of range ADTIMEOUT defined macro 4095 if conversion is incomplete or busy bit timeout SEE ALSO anaInCalib anaIn anaInmAmps brdInit 62 RabbitCore RCM4200 Reads the state of an analog input channel and uses the previously set calibration constants to convert it to current PARAMETERS channel is the channel number 0 7 4 20 MA Input Lines 0 AINO 1 AINI AIN2 Channel Code AIN3 AIN4 AINS AIN6 AIN7 NED MN BR WwW dv Negative input is ground T Applies to Prototyping Board RETURN VALUE A current value between 4 00 and 20 00 mA corresponding to the current on the analog input channel ADOVERFLOW defined macro 4096 if overflow or out of range ADTIMEOUT defined macro 4095 if conversion is incomplete or busy bit timeout SEE ALSO anaInCalib anaIn anaInVolts User s Manual 63 Reads the calibration constants gain and offset for an input based on their designated position in the flash memory and places them into global tables adcCalibS adcCalibD and adcCalibM for analog inputs Depending on the flash size the following macros can be used to identify the starting address for these locations ADC CALIB ADDRS addr
39. 19 SERDMA C 19 SIMPLE3WIRE C 20 SIMPLESWIRE C 20 SWITCHCHAR C 20 120 RabbitCore RCM4200 sample programs cont d TCP IP BROWSELED C 80 DISPLAY MAC 74 PINGLED C 80 PINGMEC 80 SMTP scarna 80 USERBLOCK_CLEAR C 49 USERBLOCK INFO C 49 serial communication 35 function calls 49 Prototyping Board RS 232 x xe 110 software PACKET LIB 49 RS232 LIB 49 serial flash software FAT CONFIG LIB 51 SFLASHL LIB 51 SFLASH_FAT LIB 51 serial ports sess 35 Ethernet port 37 programming port 38 receive line not pulled up 36 Serial Port B A D converter Serial Port C serial flash 35 Serial Port E tonica 21 35 software 6 auxiliary I O bus 34 49 VO drivers 49 libraries ADC ADS7870 LIB 54 RCM40XX LIB 52 serial communication driv CLS sro 49 serial flash 51 specifications AID converter chip 88 bus loading 91 digital I O buffer sourcing and sinking limits 91 exclusion zone 85 header footprint 89 Prototyping Board 102 Rabbit 4000 DC characteris CS te na omes 90
40. 27 from Serial Port C to Serial Port D zc The program will switch between generating parity or not on Serial off E Port C Serial Port D will always be checking parity so parity errors should occur during every other sequence To set up the Prototyping Board you will need to tie TxC and RxD together on the RS 232 header at J4 using one of the jumpers supplied in the Development Kit as shown in the diagram The Dynamic C STDIO window will display the error sequence e SERDMA C This program demonstrates using DMA to transfer data from a circular buffer to the serial port and vice versa The Dynamic C STDIO window is used to view or clear the buffer Before you compile and run the sample program you will need to connect the RS 232 header at J4 to your PC as shown in the diagram using the serial to DB9 cable J4 supplied in the Development Kit oo GND o mo TxD o 0 RxC RxD o o TxC Once you have compiled and run the sample program start Tera Term or another terminal emulation program to connect to the selected PC serial port at a baud rate of 115 200 bps You can observe the output in the Dynamic C STDIO window as you type in Tera Term and you can Colored also use the Dynamic C STDIO window to clear the edge TN buffer The Tera Term utility can be downloaded from hp vector co jp authors VA002416 teraterm html User s Manual 19 e SIMPLE3WIR
41. D Development Kits 5 RCM4200 Development Kit 5 AC adapter 3 DC power supply 5 Getting Started instructions 5 programming cable 5 digital VO 28 function calls 49 I O buffer sourcing and sink ing limits 91 memory interface 34 SMODEO 34 38 SMODEI 34 38 dimensions Prototyping Board 101 RCM4200 ss 84 Dynamic C 6 7 12 47 add on modules 7 68 installation 7 battery backed SRAM 50 COM port 12 libraries RCM40xx LIB 52 protected variables 50 sample programs 16 standard features debugging 48 telephone based technical support 6 68 upgrades and patches 68 USB port settings 12 E Ethernet cables 69 how to tell them apart 69 Ethernet connections 69 71 10 100Base T 71 10Base T Ethernet card 69 additional resources 81 direct connection 71 Ethernet cables 71 Ethernet hub 69 IP addresses 71 73 MAC addresses 74 STEPS eite eterne tenus 70 Ethernet port
42. D converter would be realized with 0 Q resistors Inline jumpers are 470 Q resistors 100 kQ ADC LNO IN e Ld Tae AWV RCM4200 LN1_IN ANN e Ea gt 100 kQ e c 2 2 nF 2 2 nF 3 JP23 JP24 E BVREF JL JL 2 048 V E li 1 Figure B 6 A D Converter Inputs AGND The A D converter chip can make either single ended or differential measurements depending on the value of the opmode parameter in the software function call Adjacent AID converter inputs are paired to make differential measurements The default setup on the Prototyping Board is to measure only positive voltages for the ranges listed in Table B 3 Table B 3 Positive A D Converter Input Voltage Ranges Min Voltage mar VORO A D Converter l with prescaler mV per Tick V V Gain V 0 0 122 528 1 11 0 0 11 264 2 Nd 0 0 5 632 4 2 75 0 0 4 506 5 2 20 0 0 2 816 8 1 375 0 0 2 253 10 1 100 0 0 1 408 16 0 688 0 0 1 126 20 0 550 106 RabbitCore RCM4200 Many other possible ranges are possible by physically changing the resistor values that make up the attenuator circuit NOTE Analog input LN7_IN does not have the 10 KQ resistor installed and so no resistor attenuator is available limiting its maximum input voltage to 2 V This input is intended to be used for a thermistor that you may install at header location JP25 It is
43. E C This program demonstrates basic RS 232 serial communication Lower case characters are sent on TxC and are sane received by RxD The received characters are converted to upper case US TxD RxD GNI and are sent out on TxD are received on RxC and are displayed in the Dynamic C STDIO window To set up the Prototyping Board you will need to tie TxD and RxC together on the RS 232 header at J4 and you will also tie RxD and TxC together using the jumpers supplied in the Development Kit as shown in the diagram e SIMPLE5WIRE C This program demonstrates 5 wire RS 232 serial communication with flow control on Serial Port D and data flow on Serial Port C To set up the Prototyping Board you will need to tie TxD and RxD together on the RS 232 header at J4 and you will also tie TxC and Rae RxC together using the jumpers supplied in the Development Kit as I 0 o J4 TxD RxD GND shown in the diagram Once you have compiled and run this program you can test flow con trol by disconnecting the TxD jumper from RxD while the program is running Charac ters will no longer appear in the STDIO window and will display again once TxD is connected back to RxD If you have two Prototyping Boards with modules run this sample program on the sending board then disconnect the programming cable and reset the sending board so that the module is operating in the Run mode Co
44. Figure A 6 Location of RCM4200 Configurable Positions Table A 9 lists the configuration options Table A 9 RCM4200 Jumper Configurations EE Factory Header Description Pins Connected Default 1 2 LNO RCM4200 JP1 LNO or PDO on J2 pin 40 2 3 PDO RCM4210 1 2 LN2 RCM4200 JP2 LN2 or PD2 on J2 pin 42 2 3 PD2 RCM4210 1 2 LN6 RCM4200 JP3 LN6 or PD6 on J2 pin 46 2 3 PD6 RCM4210 1 2 LN7 RCM4200 JP4 LN7 or PD7 on J2 pin 47 2 3 PD7 RCM4210 1 2 LN5 RCM4200 JP5 LN5 or PDS on J2 pin 45 2 3 PD5 RCM4210 1 2 LN4 RCM4200 JP6 LN4 or PD4 on J2 pin 44 2 3 PD4 RCM4210 User s Manual Table A 9 RCM4200 Jumper Configurations continued Header Description Pins Connected Factory Default 1 2 LN3 RCM4200 JP7 LN3 or PD3 on J2 pin 43 2 3 PD3 RCM4210 1 2 512K X JP8 Data SRAM Size 2 3 256K 1 2 LNI RCM4200 JP9 LNI or PDI on J2 pin 41 2 3 PDI RCM4210 1 2 PES x PES or SMODEO Output JP10 on J2 pin 37 2 3 SMODEO 1 2 PE6 X PE6 or SMODEI Output JP11 on J2 pin 38 2 3 SMODEI 1 2 PE7 x PE7 or STATUS Output JP12 on J2 pin 37 2 3 STATUS Clocked Synchronous or 1 2 RxC to Serial Flash x JP13 Programmed I O Access to Serial Flash 2 3 Programmed I O to Serial Flash Clocked Synchronous or 1 2 TxC to Serial Flash x JP14 Programmed I O Access to Serial Flash 2 3 Program
45. I O Ports Input Output I O Ports Capacitance Capacitance pF pF Parallel Ports A to E 12 14 Table A 6 lists the external capacitive bus loading for the various RCM4200 output ports Be sure to add the loads for the devices you are using in your custom system and verify that they do not exceed the values in Table A 6 Table A 6 External Capacitive Bus Loading 40 C to 85 C Output Port Clock Speed Maximum External i MHz Capacitive Loading pF All I O lines with clock doubler enabled 58 98 100 Table A 7 lists the loadings for the A D converter inputs Table A 7 A D Converter Inputs Parameter Value Input Capacitance 4 9 7 pF Common Mode 6 MQ Input Impedance Differential 7 MQ User s Manual 91 Figure A 4 shows a typical timing diagram for the Rabbit 4000 microprocessor external I O read and write cycles External I O Read no extra wait states k T1 gt lt Tw gt lt T2 gt m EN A 15 0 Tadr Sx TT TN Tosx Tes De TE a c I Tlocsx Tlocsx lt NORD TioRD TioRD 3 IBUFEN TBUFEN TBUFEN gt setup D 7 0 hold External I O Write no extra wait states lt T1 gt lt Tw gt lt T2 gt gel EE E A 15 0 Tadr ICS lw DAT csx Tes NOCSx X T TS XK 71 Tiocsx Tiocsx gt IIOWR das TBUFEN TBUFEN D 7 0 Tpuzv Tpvuz
46. I O lines are configured by calling the library function serEconfig that was generated by the Rabbit 4000 IOCONFIG EXE utility pro gram Serial Port E is configured to use Parallel Port E bits PD6 and PD7 These signals are available on the Prototyping Board s Module Extension Header header J2 Serial Port D is left in its default configuration using Parallel Port C bits PCO and PCI These signals are available on the Prototyping Board s RS 232 connector header J4 Serial Port D transmits and then receives an ASCII string when switch S3 is pressed Also note that there is one library generated by IOCONFIG EXE in the Dynamic C SAMPLES RCM4200 SERIAL folder for the 29 MHz RCM4210 To set up the Prototyping Board you will need to tie TxD J2 and RxD together on the RS 232 header at J4 using the ee ihe jumpers supplied in the Development Kit you will also pl tie TxE PD6 and RxE PD7 together with a soldered Srl man wire or with a wire jumper if you have soldered in the ae Poansa PD6 LN6 GND IDC header supplied with the accessory parts in the mo OVT VREF O O Development Kit Once you have compiled and run this program press and release switches S2 or S3 on the Prototyping Board The data echoed between the serial ports will be displayed in the STDIO window User s Manual 21 3 2 3 A D Converter Inputs RCM4200 only The following sample programs are found in the SAM
47. KE PDS PCS PES TXC PC2 PC3 TCLKE PD4 PC4 PE4 Serial Port C s iad RXC PC3 PD3 PE3 RCLKE must be selected to be on the same parallel Serial flash SCLKC PD2 PE2 PE7 PC7 port as TXE 4 2 1 1 Using the Serial Ports The receive lines on the RCM4200 serial ports do not have pull up resistors If you are using the serial ports without a receiver chip for example for RS 422 RS 232 or RS 485 serial communication the absence of a pull up resistor on the receive line will likely lead to line breaks being generated since line breaks are normally generated whenever the receive line is pulled low If you are operating a serial port asynchronously you can inhibit character assembly during breaks by setting bit 1 in the corresponding Serial Port Extended Register to 1 Should you need line breaks you will have to either add a pull up resistor on your motherboard or use a receiver that incorporates the circuits to have the output default to the nonbreak levels The Dynamic C RS232 LIB library requires you to define the macro RS232_ NOCHARASSYINBRK to inhibit break character assembly for all the serial ports define RS232_NOCHARASSYINBRK This macro is already defined so that it is the default behavior for the sample programs in the Dynamic C SAMPLES RCM4200 SERIAL folder 36 RabbitCore RCM4200 4 2 2 Ethernet Port Figure 8 shows the pinout for the RJ 45 Ethernet port J3 Note that some Ethernet con nectors
48. More About Dynamic C pente ee ete emper 47 25 2 Dynamic C Function Calls pee ieeesette to eerie traer ie te pee tp aee eet e genet ees 49 5 2 1 Digital UO hahah ei piel ns EL Re ee OUS ee nee 49 23 2 2 penal Communication Driv ts 5 ete alari irene cao 49 9 23 User Block la be ai AL A ER I ara Ae 49 X24 SRAM Users acilia loan enna 50 5 29 RCMA200 Cloning ici ctp teme eere one iii 50 5 2 6 Serial Flash Drivers raro ree Ra RARI EIA ARE ARRE leas 51 5 2 7 Prototyping Board Functions ii 52 2 241 Board Imtralization 5 5 ette e PRU Sa Eeee o cer RT 52 RIDE AD m EE 53 5 2 8 Analog Inputs RCM4200 only sees nete nene eren 54 5 3 Upgrading Dynamic Cinti other tecti e vos sees e eee Tue bee EET vex Leere dius 68 5 3 1 Add On Modules tirarla eh epa Pepe eee recedere retten erede ner gun 68 Chapter 6 Using the TCP IP Features 69 6 1 TCP IP Connection Srs aureae re renes bete aee ERE Tee aaa ir 69 6 2 TCP IP Primer on P Addresses RRERCHRU ERE ini 71 6 2 IP Addresses Explained eto ire e eee Deed ere ETHER ROS 73 6 2 2 How IP Addresses are Used er ret rte I ee Ere REP enna ren 74 6 2 3 Dynamically Assigned Internet Addresses ei 75 6 3 Placing Your Device on the Network e 76 6 4 Running TCP IP Sample ProgramS e TI 6 4 1 How to Set IP Addresses in the Sample Programs eee 78 6 4 2 How to Set Up your Computer fo
49. N2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AIN5 AINS AIN4 AIN5 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 Not accessible on Prototyping Board gaincode is the gain code of 0 to 7 applies only to Prototyping Board Gain Code Multiplier era 0 xl 0 22 5 1 x2 0 11 25 2 x4 0 5 6 3 x5 0 4 5 4 x8 0 2 8 5 x10 0 2 25 6 x16 0 1 41 7 x20 0 1 126 RETURN VALUE A value corresponding to the voltage on the analog input channel 0 2047 for 11 bit A D conversions bit 12 for sign ADOVERFLOW defined macro 4096 if overflow or out of range ADTIMEOUT defined macro 4095 if conversion is incomplete or busy bit timeout SEE ALSO anaIn anaInConfig anaInDriver 58 RabbitCore RCM4200 Calibrates the response of the desired A D converter channel as a linear function using the two conver sion points provided Four values are calculated and placed into global tables _adcCalibS _adcCalibD and adcCalibMto be later stored into simulated EEPROM using the function anaInEEWr Each channel will have a linear constant and a voltage offset PARAMETERS channel is the analog input channel number 0 to 7 corresponding to LNO IN to LN7 IN opmode is the mode of operation SINGLE single ended input DIFF differential input mAMP milliamp input channel SINGLE DIFF mAMP 0 AINO AINO AINI AINO 1 AINI AINI AINO AIN1
50. N3 IN 2 3 Tied to VREF JP25 Thermistor Location 1 2 n c NOTE Jumper connections JP3 JP10 JP12 JP14 JP16 JP18 JP23 and JP24 are made using 0 Q surface mounted resistors Jumper connections JP11 JP13 JP15 JP17 and JP19 JP22 are made using 470 Q surface mounted resistors User s Manual 113 114 RabbitCore RCM4200 APPENDIX C POWER SUPPLY Appendix C provides information on the current requirements of the RCM4200 and includes some background on the chip select circuit used in power management C 1 Power Supplies The RCM4200 requires a regulated 3 0 V 3 6 V DC power source The RabbitCore design presumes that the voltage regulator is on the user board and that the power is made available to the RCM4200 board through header J2 An RCM4200 with no loading at the outputs operating at 58 98 MHz typically draws 240 mA and may draw up to 275 mA at 3 6 V and 85 C the corresponding current draw for the RCM4210 is typically 200 mA and up to 225 mA at 3 6 V and 85 C C 1 1 Battery Backup Circuits The RCM4200 does not have a battery but there is provision for a customer supplied bat tery to back up the data SRAM and keep the internal Rabbit 4000 real time clock running Header J2 shown in Figure C 1 allows access to the external battery This header makes it possible to connect an external 3 V power supply This allows the SRAM and the inter nal Rabbit 4000 real time clock to retain
51. O R28C D LIH O C ver vx 1 0 15 3 8 0 165 3 485 0 15 4 2 88 5 I 3 8 Figure B 2 Prototyping Board Dimensions User s Manual 101 Table B 1 lists the electrical mechanical and environmental specifications for the Proto typing Board Table B 1 Prototyping Board Specifications Parameter Specification Board Size 3 80 x 3 80 x 0 48 97 mm x 97 mm x 12 mm Operating Temperature 0 C to 70 C Humidity 5 to 95 noncondensing Input Voltage 8 V to 24 VDC Maximum Current Draw 800 mA max for 3 3 V supply including user added circuits 1 A total 3 3 V and 5 V combined 1 3 x 2 0 33 mm x 50 mm throughhole 0 1 spacing Poway Aa additional space for SMT components One 2 x 25 header socket 1 27 mm pitch to accept RCM4200 One 1 x 3 IDC header for power supply connection Connectors One 2 x 5 IDC RS 232 header 0 1 pitch Two unstuffed header locations for analog and RCM4200 signals 25 unstuffed 2 pin header locations for optional configurations B 3 Power Supply The RCM4200 requires a regulated 3 0 V 3 6 V DC power source to operate Depending on the amount of current required by the application different regulators can be used to supply this voltage The Prototyping Board has an onboard 5 V switching power regulator from which a 3 3 V linear regulator draws its supply Thus both 5 V and 3 3 V are ava
52. OR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPO NENTS IN LIFE SUPPORT DEVICES OR SYSTEMS UNLESS A SPECIFIC WRITTEN AGREEMENT SIGNED BY A CORPORATE OFFICER OF DIGI INTERNATIONAL IS ENTERED INTO BETWEEN THE CUSTOMER AND DIGI INTERNATIONAL No complex software or hardware system is perfect Bugs are always present in a system of any size and microprocessor systems are subject to failure due to aging defects electrical upsets and various other causes In order to prevent danger to life or property it is the responsibility of the system designers who are our customers to incorporate redundant protective mechanisms appropriate to the risk involved Even with the best practices human error and improbable coincidences can still conspire to result in damaging or dan gerous system failures Our products cannot be made perfect or near perfect without causing them to cost so much as to preclude any practical use thus our products reflect our reasonable commercial efforts All Rabbit Semiconductor products are functionally tested Although our tests are comprehensive and care fully constructed 100 test coverage of every possible defect is not practical Our products are specified for operation under certain environmental and electrical conditions Our specifications are based on analysis and sample testing Individual units are not usually tested under all environmental and electrical conditions Indi vidual components may be specified for
53. PLES RCM4200 ADC folder AD CAL ALL C Demonstrates how to recalibrate all the single ended analog input channels with one gain using two known voltages to generate the calibration constants for each channel The constants will be written into the user block data area Connect a positive voltage from 0 20 V DC for example the power supply positive out put to analog input channels LNOIN LNE6IN on the Prototyping Board and connect the ground to GND Use a voltmeter to measure the voltage and follow the instructions in the Dynamic C STDIO window once you compile and run this sample program Remember that analog input LN7 on the Prototyping Board is used with the thermistor and is not be used with this sample program NOTE The above sample program will overwrite the existing calibration constants e AD CAL CHAN C Demonstrates how to recalibrate one single ended analog input channel with one gain using two known voltages to generate the calibration constants for that channel The constants will be rewritten into the user block data area Connect a positive voltage from 0 20 V DC for example the power supply positive out put to an analog input channel on the Prototyping Board and connect the ground to GND Use a voltmeter to measure the voltage and follow the instructions in the Dynamic C STDIO window once you compile and run this sample program Remember that analog input LN7 on the Prototyping Board is used with the thermistor and is
54. RCMA200 analog Inputs Li 99 adding components 105 dimensions 101 expansion area 99 features sss 98 99 jumper configurations 111 jumper locations 111 mounting RCM4200 9 pinout esses 103 power supply 102 prototyping area 104 specifications 102 use of Rabbit 4000 signals 104 R Rabbit 4000 spectrum spreader time delays Ri 93 Rabbit subsystems 29 RCM4200 mounting on Prototyping Board cose 9 Run Mode 39 switching modes 39 S sample programs 16 A D converter AD CAL ALL C 22 108 AD CAL CHAN C 22 108 AD RDVOLT ALL C AD SAMPLE 22 THERMISTOR C 23 108 A D converter calibration DNLOADCALIB C 23 UPLOADCALIB C 23 getting to know the RCM4200 CONTROLLED C 16 FLASHLEDI C 16 FLASHLED2 C 16 TAMPERDETECTION C Asili 17 TOGGLESWITCH C 17 how to run TCP IP sample programs 77 78 how to set IP address 78 onboard serial flash SERIAL_FLASHLOG C 18 SFLASH_INSPECT C 18 PONG C jasc licens 12 real time clock RTC_TEST C 25 SETRTCKB C 25 serial communication FLOWCONTROL C 19 IOCONFIG_ SWITCHECHO C 21 PARITY C
55. also possible to read a negative voltage on LNO IN LNS IN by moving the 0 Q Jumper see Figure B 6 on header JP23 or JP24 associated with the A D converter input from analog ground to the reference voltage generated and buffered by the A D converter Adjacent input channels are paired moving the jumper on JP 23 changes both of the paired channels LN4 IN LNS5 IN and moving the jumper on JP24 changes LNO IN LN1 IN and LN2 IN LNG3 IN At the present time Rabbit Semiconductor does not offer the software drivers to work with single ended negative voltages but the differential mode described below may be used to measure negative voltages Differential measurements require two channels As the name differential implies the dif ference in voltage between the two adjacent channels is measured rather than the differ ence between the input and analog ground Voltage measurements taken in differential mode have a resolution of 12 bits with the 12th bit indicating whether the difference is positive or negative The A D converter chip can only accept positive voltages as explained in Section 4 4 Both differential inputs must be referenced to analog ground and both inputs must be positive with respect to analog ground Table B 4 provides the differential voltage ranges for this setup Table B 4 Differential Voltage Ranges Min Differential Max Differential i Voltage with A D Converter 1 Voltage i mV per Tick
56. are numbered in reverse to the order used here ETHERNET RJ 45 Plug Figure 8 RJ 45 Ethernet Port Pinout Three LEDs are placed next to the RJ 45 Ethernet jack one to indicate Ethernet link activity LINK ACT one to indicate when the RCM4200 is connected to a functioning 100Base T network SPEED and one FDX COL to indicate that the current connection is in full duplex mode steady on or that a half duplex connection is experiencing collisions blinks The RJ 45 connector is shielded to minimize EMI effects to from the Ethernet signals User s Manual 37 4 2 3 Programming Port The RCM4200 is programmed via the 10 pin header labeled J1 The programming port uses the Rabbit 4000 s Serial Port A for communication Dynamic C uses the programming port to download and debug programs Serial Port A is also used for the following operations e Cold boot the Rabbit 4000 on the RCM4200 after a reset e Remotely download and debug a program over an Ethernet connection using the RabbitLink EG2110 e Fast copy designated portions of flash memory from one Rabbit based board the master to another the slave using the Rabbit Cloning Board Alternate Uses of the Programming Port All three Serial Port A signals are available as e a synchronous serial port e an asynchronous serial port with the clock line usable as a general CMOS I O pin The programming port may also be used as a serial port via the DIAG connector on the pr
57. attery backup for the RCM4200 SRAM and real time clock 100 RabbitCore RCM4200 B 2 Mechanical Dimensions and Layout Figure B 2 shows the mechanical dimensions and layout for the Prototyping Board 2 735 69 5 B e E n ci aV DI mmm USI MZ ie Pe OOOOOOOO re ODO0OO00000000000 mm 0000000000000 re OO0OOO0OO0000000 ro ODOOOO000O0000000 re ODOOOO0000000000 Fr OOOOOOOOOOOOO Om ia re O0O0000000000000 re OO0O00000000000 O re O00000000000000 O reeOO0000000000000 M rs OOO0O0OOOOooOooOooOO O E OO C OO o ss Ol re Ooooooooooooo x OoooooooooooooooO AI O O O MD OQ OO OJOO OJOO QQQ OO OJOO I o ool n A 310 78 8 3 80 97 r O0000000000000000 Rk 0000000000000000 amp OOOOOOOOOOOOOOOO i OOOOOOOOOOOOOQ LZ mOOOOO OOOOOOOO oooooo um LE 6 22 92 ENDS J3 OO0000lf1 Of an fel Q Q ag RAT 2 BL AN ITO BOD CON BOR BONA A TETOS BO GOO GOO6 GOOD amp Y 00000000000000000000000 E ctO000000000000000000000000 c c gil l Kat m ler 1 d LI N O Ce i Q y OU UURJU IVI TOS Jos vw ji E ooooo 58581 vd e E Dlo EE R21 DOD
58. be used as a regular serial port 4 3 1 Changing Between Program Mode and Run Mode The RCMA200 is automatically in Program Mode when the PROG connector on the pro gramming cable is attached and is automatically in Run Mode when no programming cable is attached When the Rabbit 4000 is reset the operating mode is determined by the status of the SMODE pins When the programming cable s PROG connector is attached the SMODE pins are pulled high placing the Rabbit 4000 in the Program Mode When the programming cable s PROG connector is not attached the SMODE pins are pulled low causing the Rabbit 4000 to operate in the Run Mode RESET RCM4200 when changing mode Press RESET button if using Prototyping Board OR Cycle power off on after removing or attaching programming cable 3 pin power connector Programming Cable Colored t is iL Q Q O o e OOO000000000Q _ ES Tg OOOO 9 TES he 000 93939 so 0000000 0000 ca 000000 0900 O0GO06 OO BE Ga 00 oo oO fl iO O GIO O DIO ORO O ee Um 00000000000000000 00000000000000000 0000000000000000 OQOO000000 o oo O oo eaO oo a i p al Figure 9 Switching Between Program Mode and Run Mode U
59. be the purpose and function of the pro gram Follow the instructions at the beginning of the sample program More complete information on Dynamic C is provided in the Dynamic C User s Manual User s Manual 15 3 2 Sample Programs Of the many sample programs included with Dynamic C several are specific to the RCM4200 modules These programs will be found in the SAMPLES RCM4200 folder e CONTROLLED C Demonstrates use of the digital outputs by having you turn LEDs DS2 and DS3 on the Prototyping Board on or off from the STDIO window on your PC Parallel Port B bit 2 LED DS2 Parallel Port B bit 3 LED DS3 Once you compile and run CONTROLLED C the following display will appear in the Dynamic C STDIO window lt lt Proto board LEDs Hae From PC keyboard Select 22052 or 3 053 to toggle LEDs amp Press GQ To Quit gt Press 2 or 3 on your keyboard to select LED DS2 or DS3 on the Prototyping Board Then follow the prompt in the Dynamic C STDIO window to turn the LED ON or OFF A logic low will light up the LED you selected e FLASHLED1 C demonstrates the use of assembly language to flash LEDs DS2 and DS3 on the Prototyping Board at different rates Once you have compiled and run this program LEDs DS2 and DS3 will flash on off at different rates e FLASHLED2 C demonstrates the use of cofunctions and costatements to flash LEDs DS2 and DS3 on the Prototyping Board at different rates Once you have compi
60. can be used for several series of RabbitCore mod ules and so the signals at J2 depend on the signals available on the specific RabbitCore module Analog Inputs Header The Prototyping Board s analog signals are presented at header J3 These analog signals are connected via attenuator filter circuits on the Proto typing Board to the corresponding analog inputs on the RCM4200 module Developers can solder wires directly into the appropriate holes or for more flexible development a 2 x 7 header strip with a 0 1 pitch can be soldered into place See Figure B 4 for the header pinouts User s Manual 99 e RS 232 Two 3 wire or one 5 wire RS 232 serial ports are available on the Prototyp ing Board at header J4 A 10 pin 0 1 pitch header strip installed at J4 allows you to connect a ribbon cable that leads to a standard DE 9 serial connector e Current Measurement Option You may cut the trace below header JP1 on the bottom side of the Prototyping Board and install a 1 x 2 header strip from the Develop ment Kit to allow you to use an ammeter across the pins to measure the current drawn from the 5 V supply Similarly you may cut the trace below header JP2 on the bottom side of the Prototyping Board and install a 1 x 2 header strip from the Development Kit to allow you to use an ammeter across the pins to measure the current drawn from the 3 3 V supply e Backup Battery A 2032 lithium ion battery rated at 3 0 V 220 mA h provides b
61. data with the RCM4200 powered down 43 3 V IN 1 External Battery INZ AW a VBAT_EXT 7 Figure C 1 External Battery Connections at Header J2 A lithium battery with a nominal voltage of 3 V and a minimum capacity of 165 mA h is recommended A lithium battery is strongly recommended because of its nearly constant nominal voltage over most of its life User s Manual 115 The drain on the battery by the RCM4200 is typically 7 5 uA when no other power is sup plied If a 165 mA h battery is used the battery can last about 2 5 years 165 mAh _ 35 ears CIT Y PEST The actual life in your application will depend on the current drawn by components not on the RCM4200 and on the storage capacity of the battery The RCM4200 does not drain the battery while it is powered up normally C 1 2 Reset Generator The RCM4200 uses a reset generator to reset the Rabbit 4000 microprocessor when the volt age drops below the voltage necessary for reliable operation The reset occurs between 2 85 V and 3 00 V typically 2 93 V Since the RCMA200 will operate at voltages as low as 3 0 V exercise care when operating close to the 3 0 V minimum voltage for example keep the power supply as close as possible to the RCM4200 since your RCM4200 could reset unintentionally The RCMA200 has a reset output pin 3 on header J2 116 RabbitCore RCM4200 NOTICE TO USERS RABBIT SEMICONDUCT
62. different environmental or electrical conditions than our assembly containing the components In this case we have qualified the components through analysis and testing to operate successfully in the particular circumstances in which they are used User s Manual 117 118 RabbitCore RCM4200 A AID converter access via Prototyping Board EE 106 function calls analn eoe reme 58 analnCalib 59 anaInConfig 54 anaInDiff 62 analnDriver 56 anaInEERd 64 anaInEEWT 66 analnmAmps 63 anaInVolts 61 inputs differential measurements 107 negative voltages 107 single ended measure MENTS eere terere 106 additional information online documentation 6 alerts function calls digInAlert 53 timedAlert 53 analog inputs See A D converter auxiliary I O bus 34 B battery backup battery life 116 external battery connections 115 reset generator 116 use of battery backed SRAM MUSEPERNEERR EF e EE A NT 50 board initialization 52 function calls brdInit 52 bus loading 91 C clock doubler 44 Cloning oes 50 conformal coating 94
63. directly on the board However a serial interface may be incorporated on the board the RCM4200 is mounted on For example the Prototyping Board has an RS 232 transceiver chip 4 2 1 Serial Ports There are five serial ports designated as Serial Ports A B C D and E All five serial ports can operate in an asynchronous mode up to the baud rate of the system clock divided by 8 An asynchronous port can handle 7 or 8 data bits A 9th bit address scheme where an additional bit is sent to mark the first byte of a message is also supported Serial Port A is normally used as a programming port but may be used either as an asyn chronous or as a clocked serial port once application development has been completed and the RCM4200 is operating in the Run Mode Serial Port B is shared by the RCM4200 module s A D converter and is set up as a clocked serial port Since this serial port is set up for synchronous serial communication on the RCM4200 model you will lose the A D converter s functionality if you try to use the serial port in the asynchronous mode Serial Port B is available without any restrictions on the RCM4210 Serial Port C is shared with the serial flash and is set up as a clocked serial port PE7 is set up to provide the SCLKC output to the serial flash but PD2 also provides the SCLKC ouput automatically when Serial Port C is used as a clocked serial port Since this serial port is available for synchronous serial communication on ei
64. dware select a different COM port within Dynamic C From the Options menu select Project Options then select Communications Select another COM port from the list then click OK Press lt Ctrl Y gt to force Dynamic C to recompile the BIOS If Dynamic C still reports it is unable to locate the target system repeat the above steps until you locate the active COM port You should receive a message Bios compiled successfully once this step is completed successfully 12 RabbitCore RCM4200 2 4 Where Do I Go From Here If the sample program ran fine you are now ready to go on to the sample programs in Chapter 3 and to develop your own applications The sample programs can be easily modi fied for your own use The user s manual also provides complete hardware reference infor mation and software function calls for the RCM4200 series of modules and the Prototyping Board For advanced development topics refer to the Dynamic C User s Manual also in the online documentation set 2 4 1 Technical Support NOTE If you purchased your RCM4200 through a distributor or through a Rabbit Semiconductor partner contact the distributor or partner first for technical support If there are any problems at this point e Use the Dynamic C Help menu to get further assistance with Dynamic C e Check the Rabbit Semiconductor Technical Bulletin Board at www rabbit com support bb e Use the Technical Support e mail form at www rabbit com support
65. e A D converter in the corre sponding manner The calibration must be done with the JP23 JP24 selection jumpers in the desired position see Figure B 6 If a calibration is performed and a jumper is subse quently moved the corresponding input s must be recalibrated The calibration table in software only holds calibration constants based on mode channel and gain Other factors affecting the calibration must be taken into account by calibrating using the same mode and gain setup as in the intended use Sample programs are available to illustrate how to read and calibrate the various A D inputs for the single ended operating mode Mode Read Calibrate Single Ended one channel AD CAL CHAN C Single Ended all channels AD RDVOLT ALL C AD CAL ALL C 108 RabbitCore RCM4200 B 4 4 Serial Communication The Prototyping Board allows you to access the serial ports from the RCM4200 module Table B 5 summarizes the configuration options Note that Serial Ports E can be used only when the RCM4210 is installed on the Prototyping Board Table B 5 Prototyping Board Serial Port Configurations Serial Port Header Default Use Alternate Use A J2 Programming Port RS 232 n reo S C J2 J4 Serial Flash D J2 JA RS 232 J2 RS 232 Serial Ports E may be used as a serial port or the corresponding pins at header location J2 may be used as parallel ports User s Manual 109 B
66. e diagram using the serial to DB9 cable J4 supplied in the Development Kit oo GND O mo TxD o o RxC RxD o o TxC DNLOADCALIB C Demonstrates how to retrieve analog calibration data to rewrite it back to the user block using a terminal emulation utility such as Tera Term Colored Start Tera Term or another terminal emulation program edge on your PC and configure the serial parameters as follows e Baud rate 19 200 bps 8 bits no parity 1 stop bit e Enable Local Echo option e Feed options Receive CR Transmit CR LF Now compile and run this sample program Verify that the message Waiting Please Send Data file message is being display in the Tera Term display window before proceeding Within Tera Term select File gt Send File gt Path and filename then select the OPEN option within the dialog box Once the data file has been downloaded Tera Term will indicate whether the calibration data were written successfully e UPLOADCALIB C Demonstrates how to read the analog calibration constants from the user block using a terminal emulation utility such as Tera Term Start Tera Term or another terminal emulation program on your PC and configure the serial parameters as follows User s Manual 23 e Baudrate 19 200 bps 8 bits no parity 1 stop bit e Enable Local Echo option e Feed options Receive CR Transmit CR LF
67. e input signal can range from 2 V to 2 V differential mode or from 0 V to 2 V single ended mode Use a resistor divider such as the one shown in Figure 10 to measure voltages above 2 V on the analog inputs LN1 3 BVREF rcu jc 1 AGND E RO ADC LNO NAN y RCM4200 ANN RO Figure 10 Resistor Divider Network for Analog Inputs The RI resistors are typically 20 KQ to 100 KQ with a lower resistance leading to more accuracy but at the expense of a higher current draw The RO resistors would then be 180 kQ to 900 KQ for a 10 1 attenuator The capacitor filters noise pulses on the A D converter input The actual voltage range for a signal going to the A D converter input is also affected by the 1 2 4 5 8 10 16 and 20 V V software programmable gains available on each channel of the ADS7870 A D converter Thus you must scale the analog signal with an attenuator circuit and a software programmable gain so that the actual input presented to the A D converter is within the range limits of the ADS7870 A D converter chip 2 V to 2 V or 0 V to 2 V The A D converter chip can only accept positive voltages With the R1 resistors connected to ground your analog circuit is well suited to perform positive A D conversions When the RI resistors are tied to ground for differential measurements both differential inputs must be referenced to analog ground and both inputs must be positive
68. ecting the Prototyping Board for use with Dynamic C and the sample programs 1 Prepare the Prototyping Board for Development 2 Attach the RCM4200 module to the Prototyping Board 3 Connect the programming cable between the RCM4200 and the PC 4 Connect the power supply to the Prototyping Board 2 2 1 Prepare the Prototyping Board for Development Snap in four of the plastic standoffs supplied in the bag of accessory parts from the Devel opment Kit in the holes at the corners as shown in Figure 2 Figure 2 Insert Standoffs 8 RabbitCore RCM4200 2 2 2 Attach Module to Prototyping Board Turn the RCM4200 module so that the mounting holes line up with the corresponding holes on the Prototyping Board Insert the metal standoffs as shown in Figure 3 secure them from the bottom using the 4 40 x 1 8 screws and washers then insert the module s header J2 on the bottom side into socket RCMI on the Prototyping Board Insert standoffs between Tie o mounting holes and gc 2 E c X Prototyping Board E y 7 emi TOS uo UXA Ta L L 4l B o000000000 ONQOQQOQQQQQQO O00 00000000000 pro OOOOOOOOOOOOOO re OOOO0000000000 m OOOO000000000R RCM4200 ps 00000000000000 O0000000000000 ra 00000000000000 ra OOO0O00 000000011 ra 0O0000000000000 ra 00000000000000 90000000000900Q 1 t Line up mount
69. ess start of single ended analog input channels ADC CALIB ADDRD address start of differential analog input channels ADC CALIB ADDRM address start of milliamp analog input channels NOTE This function cannot be run in RAM PARAMETER channel is the analog input channel number 0 to 7 corresponding to LNO IN to LN7 IN opmode is the mode of operation SINGLE single ended input line DIFF differential input line mAMP milliamp input line channel SINGLE DIFF mAMP 0 AINO AINO AINI AINO 1 AIN1 AIN1 AINO AIN1 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AIN5 AINS AIN4 AIN5 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 ALLCHAN read all channels for selected opmode Not accessible on Prototyping Board 64 RabbitCore RCM4200 gaincode is the gain code of 0 to 7 The gaincode parameter is ignored when channel is ALLCHAN Gain Code ia 0 0 22 5 1 0 11 25 0 5 6 0 4 5 0 2 8 0 2 25 0 1 41 oO t dv 0 1 126 Applies to Prototyping Board RETURN VALUE 0 if successful 1 if address is invalid or out of range SEE ALSO anaInEEWr anaInCalib User s Manual 65 Writes the calibration constants gain and offset for an input based from global tables adeCalibs _adcCalibD and adcCalibM to designated positions in the flash memory Depending on t
70. gurable as asynchro nous with IrDA 4 as clocked serial SPI and 1 as SDLC HDLC 1 clocked serial port shared with serial flash asynchronous clocked serial port dedicated for programming The RCM4200 is programmed over a standard PC serial port through a programming cable supplied with the Development Kit and can also be programed through a USB port with an RS 232 USB converter or over an Ethernet with the RabbitLink both available from Rabbit Semiconductor Appendix A provides detailed specifications for the RCM4200 User s Manual 1 2 Advantages of the RCM4200 e Fast time to market using a fully engineered ready to run ready to program micro processor core e Competitive pricing when compared with the alternative of purchasing and assembling individual components e Easy C language program development and debugging e Rabbit Field Utility to download compiled Dynamic C bin files and cloning board options for rapid production loading of programs e Generous memory size allows large programs with tens of thousands of lines of code and substantial data storage 4 RabbitCore RCM4200 1 3 Development and Evaluation Tools 1 3 1 RCM4200 Development Kit The RCM4200 Development Kit contains the hardware essentials you will need to use the RCM4200 module The items in the Development Kit and their use are as follows RCM4200 module Prototyping Board AC adapter 12 V DC 1 A Included
71. he doubler is not enabled then every clock is shortened during the low part of the clock period The maxi mum shortening for a pair of clocks combined is shown in the table Technical Note TN227 Interfacing External I O with Rabbit Microprocessor Designs contains suggestions for interfacing I O devices to the Rabbit 4000 microprocessors User s Manual 93 A 5 Conformal Coating The areas around the 32 kHz real time clock crystal oscillator have had the Dow Corning silicone based 1 2620 conformal coating applied The conformally coated area is shown in Figure A 5 The conformal coating protects these high impedance circuits from the effects of moisture and contaminants over time 1 Wm Jen Conformally coated area Figure A 5 RCM4200 Areas Receiving Conformal Coating Any components in the conformally coated area may be replaced using standard soldering procedures for surface mounted components A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contaminants NOTE For more information on conformal coatings refer to Technical Note 303 Con formal Coatings 94 RabbitCore RCM4200 A 6 Jumper Configurations Figure A 6 shows the header locations used to configure the various RCM4200 options via jumpers peer vie UUUUUUTUTU J O100 OXON NO
72. he flash size the following macros can be used to identify the starting address for these locations ADC CALIB ADDRS address start of single ended analog input channels ADC CALIB ADDRD address start of differential analog input channels ADC CALIB ADDRM address start of milliamp analog input channels NOTE This function cannot be run in RAM PARAMETER channel is the analog input channel number 0 to 7 corresponding to LNO IN to LN7 IN opmode is the mode of operation SINGLE single ended input line DIFF differential input line mAMP milliamp input line channel SINGLE DIFF mAMP 0 AINO AINO AINI AINO 1 AIN1 AINI AINO AIN1 2 AIN2 AIN2 AIN3 AIN2 3 AIN3 AIN3 AIN2 AIN3 4 AIN4 AIN4 AINS AIN4 5 AINS AINS AIN4 AIN5 6 AIN6 AIN6 AIN7 AIN6 7 AIN7 AIN7 AIN6 AIN7 ALLCHAN read all channels for selected opmode Not accessible on Prototyping Board 66 RabbitCore RCM4200 gaincode is the gain code of 0 to 7 The gaincode parameter is ignored when channel is ALLCHAN Gain Code Voltage Range V 0 0 22 5 1 0 11 25 2 0 5 6 3 0 4 5 4 0 2 8 5 0 2 25 6 0 1 41 7 0 1 126 Applies to Prototyping Board RETURN VALUE 0 if successful if address is invalid or out of range SEE ALSO anaInEEWr anaInCalib User s Manual 67 5 3 Upgrading Dynamic C Dynamic C patches that focus on
73. ignals on the Prototyping Board Pin Pin Name Prototyping Board Use 1 3 3 V 3 3 V power supply 2 GND 3 RST OUT Reset output from reset generator 4 IORD External read strobe 5 IOWR _ External write strobe 6 RESET_IN Input to reset generator 8 15 PAO PA7 Output pulled high 16 PBO CLKB used by A D converter RCM4200 only 17 PBI Programming port CLKA 18 PB2 LED DS2 normally high off 19 PB3 LED DS3 normally high off 20 PB4 Switch S2 normally open pulled up 21 PB5 Switch S3 normally open pulled up 22 23 PB6 PB7 Output pulled high 24 25 PCO PCI Serial Port D RS 232 header J4 high 26 27 PC2 PC3 Serial Port C used by serial flash high 28 29 PCA PCS Serial Port B used by A D converter RCM4200 only 30 31 PC6 PC7 Serial Port A programming port high 32 33 PEO PE1 Output high 34 PE2 External I O strobe Ethernet 35 38 PE3 PE6 Output high 39 PE7 Serial flash SCLK 40 47 LNO LN7 A D converter inputs RCM4200 only 48 CONVERT st VERT input RCM4200 49 VREE a ese voltage RCM4200 DET ec PDO PD7 output high are available on these pins for the RCM4210 There is a 1 3 x 2 through hole prototyping space available on the Prototyping Board The holes in the prototyping area are spaced at 0 1 2 5 mm 3 3 V 5 V and GND traces run along the top edge of the prototyping area for easy access Small t
74. ilable on the Prototyping Board The Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2 as shown in Figure B 3 LINEAR POWER REGULATOR 3 3v SWITCHING POWER REGULATOR Py J Ti 1 D2 DGIN JPA LM1117 P2 zz H s U2 ei ut SS Q 34 Di403 cs fYY C6 c4 i e T47 pF 330 uH 330 uF 10 uF 10 pF IL LM2575 la L1 aE L LL B140 Figure B 3 Prototyping Board Power Supply 102 RabbitCore RCM4200 B 4 Using the Prototyping Board The Prototyping Board is actually both a demonstration board and a prototyping board As a demonstration board it can be used to demonstrate the functionality of the RCM4200 right out of the box without any modifications to either board The Prototyping Board comes with the basic components necessary to demonstrate the operation of the RCM4200 Two LEDs DS2 and DS3 are connected to PB2 and PB3 and two switches S2 and S3 are connected to PB4 and PB5 to demonstrate the interface to the Rabbit 4000 microprocessor Reset switch S1 is the hardware reset for the RCM4200 The Prototyping Board provides the user with RCM4200 connection points brought out con veniently to labeled points at header J2 on the Prototyping Board Although header J2 is unstuffed a 2 x 25 header is included in the bag of parts RS 232 signals Serial Ports C and D are a
75. ine help by creating function description block comments using a special format for library functions e Standard debugging features gt Breakpoints Set breakpoints that can disable interrupts gt Single stepping Step into or over functions at a source or machine code level uC OS I aware gt Code disassembly The disassembly window displays addresses opcodes mnemonics and machine cycle times Switch between debugging at machine code level and source code level by simply opening or closing the disassembly window gt Watch expressions Watch expressions are compiled when defined so complex expressions including function calls may be placed into watch expressions Watch expressions can be updated with or without stopping program execution gt Register window All processor registers and flags are displayed The contents of general registers may be modified in the window by the user D Stack window shows the contents of the top of the stack gt Hex memory dump displays the contents of memory at any address gt STDIO window printt outputs to this window and keyboard input on the host PC can be detected for debugging purposes printf output may also be sent to a serial port or file 48 RabbitCore RCM4200 5 2 Dynamic C Function Calls 5 2 1 Digital I O The RCM4200 was designed to interface with other systems and so there are no drivers written specifically for the I O The general Dynamic C read and wri
76. ing 0000000000000 holes with holes on Prototyping Board SO O GEO O DIO C amp O O qe Figure 3 Install the Module on the Prototyping Board NOTE It is important that you line up the pins on header J2 of the module exactly with socket RCMI on the Prototyping Board The header pins may become bent or damaged if the pin alignment is offset and the module will not work Permanent electrical dam age to the module may also result if a misaligned module is powered up Press the module s pins gently into the Prototyping Board socket press down in the area above the header pins For additional integrity you may secure the RCM4200 to the stand offs from the top using the remaining two 4 40 x 1 8 screws and washers User s Manual 9 2 2 3 Connect Programming Cable The programming cable connects the module to the PC running Dynamic C to download programs and to monitor the module during debugging Connect the 10 pin connector of the programming cable labeled PROG to header J1 on the RCM4200 as shown in Figure 4 Be sure to orient the marked usually red edge of the cable towards pin 1 of the connector Do not use the DIAG connector which is used for a normal serial connection 3 pin power connector Programming Cable Colored
77. ing voltage regulator then to a separate 3 3 V linear regulator The regulators provide stable power to the RCM4200 module and the Prototyping Board Power LED The power LED lights whenever power is connected to the Prototyping Board Reset Switch A momentary contact normally open switch is connected directly to the RCMA200 s RESET IN pin Pressing the switch forces a hardware reset of the system I O Switches and LEDs Two momentary contact normally open switches are con nected to the PB4 and PBS pins of the RCM4200 module and may be read as inputs by sample applications Two LEDs are connected to the PB2 and PB3 pins of the RCM4200 module and may be driven as output indicators by sample applications Prototyping Area A generous prototyping area has been provided for the installation of through hole components 3 3 V 5 V and Ground buses run around the edge of this area Several areas for surface mount devices are also available Note that there are SMT device pads on both top and bottom of the Prototyping Board Each SMT pad is connected to a hole designed to accept a 30 AWG solid wire Module Extension Header The complete pin set of the RCM4200 module is duplicated at header J2 Developers can solder wires directly into the appropriate holes or for more flexible development a 2 x 25 header strip with a 0 1 pitch can be sol dered into place See Figure B 4 for the header pinouts NOTE The same Prototyping Board
78. is the default configuration 39 PE7 STATUS Input Output T O Strobe I7 PWM3 RXA RXE SCLKC DREQI Input Capture PE7 SCLKC is the default configuration 32 RabbitCore RCM4200 Table 2 RCM4200 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes 40 47 LNI0 7 Analog Input AID converter RCM4200 only 40 PDO Input Output I O Strobe IO Timer CO D8 INTO SCLKD TCLKF QRDIB 41 PDI Input Output IA6 I O Strobe I1 Timer C1 D9 INTI RXD RCLKF QRDIA Input Capture RCMA210 only 42 PD2 Input Output I O Strobe I2 Timer C2 D10 DREQO TXF SCLKC QRD2B SCLKC see Section 4 2 1 43 PD3 Input Output IA7 I O Strobe I3 Timer C3 DII DREQI RXC RXF QRD2A Input Capture 44 PD4 Input Output T O Strobe I4 D12 PWMO TXB TCLKE 45 PDS Input Output IA6 T O Strobe I5 D13 PWMI RXB RCLKE Input Capture RCM4210 only User s Manual Table 2 RCM4200 Pinout Configurations continued Pin Pin Name Default Use Alternate Use Notes I O Strobe I6 D14 PWM2 TXA TXE 46 PD6 Input Output IA7 Serial Port E I O Strobe I7 RCM4210 only D15 PWM3 RXA RXE Input Capture 47 PD7 Input Output A D converter 48 CONVERT Analog Input RCM4200 only 1 15 V 2 048 V 2 500 V on chip ref voltage RCM4200 only A
79. it would probably be easier to place the controller directly on the external network out side of the firewall This avoids some of the configuration complications by sacrificing some security User s Manual 71 Firewall Proxy Server Eur c ee Network AT Ethernet Ethernet RCM4200 Typical Corporate Network System If your system administrator can give you an Ethernet cable along with its IP address the netmask and the gateway address then you may be able to run the sample programs with out having to setup a direct connection between your computer and the RCM4200 You will also need the IP address of the nameserver the name or IP address of your mail server and your domain name for some of the sample programs 72 RabbitCore RCM4200 6 2 1 IP Addresses Explained IP Internet Protocol addresses are expressed as 4 decimal numbers separated by periods for example 216 103 126 155 10 1 1 6 Each decimal number must be between 0 and 255 The total IP address is a 32 bit number consisting of the 4 bytes expressed as shown above A local network uses a group of adja cent IP addresses There are always 2 IP addresses in a local network The netmask also called subnet mask determines how many IP addresses belong to the local network The netmask is also a 32 bit address expressed in the same fo
80. le A crossover cable is a special cable that flips some connections between the two connectors and permits direct connection of two client systems A standard RJ 45 network cable will not work for this purpose Micro LAN Another simple alternative for desktop development Use a small Eth ernet 10Base T hub and connect both the PC s network interface card and the RCM4200 module s Ethernet port to it using standard network cables The following options require more care in address selection and testing actions as conflicts with other users servers and systems can occur LAN Connect the RCM4200 module s Ethernet port to an existing LAN preferably one to which the development PC is already connected You will need to obtain IP addressing information from your network administrator WAN The RCM4200 is capable of direct connection to the Internet and other Wide Area Networks but exceptional care should be used with IP address settings and all network related programming and development We recommend that development and debugging be done on a local network before connecting a RabbitCore system to the Internet TIP Checking and debugging the initial setup on a micro LAN is recommended before connecting the system to a LAN or WAN The PC running Dynamic C does not need to be the PC with the Ethernet card Apply Power Plug in the AC adapter The RCM4200 module and Prototyping Board are now ready to be used RabbitCore RCM42
81. led and run this program LEDs DS2 and DS3 will flash on off at different rates 16 RabbitCore RCM4200 e TAMPERDETECTION C demonstrates how to detect an attempt to enter the bootstrap mode When an attempt is detected the battery backed onchip encryption RAM on the Rabbit 4000 is erased This battery backed onchip encryption RAM can be useful to store data such as an AES encryption key from a remote location This sample program shows how to load and read the battery backed onchip encryption RAM and how to enable a visual indicator Once this sample is compiled and running you pressed the F9 key while the sample program is open remove the programming cable and press the reset button on the Prototyping Board to reset the module LEDs DS2 and DS3 will be flashing on and off Now press switch S2 to load the battery backed RAM with the encryption key The LEDs are now on continuously Notice that the LEDs will stay on even when you press the reset button on the Prototyping Board Reconnect the programming cable briefly and unplug it again to simulate an attempt to access the onchip encryption RAM The LEDs will be flashing because the battery backed onchip encryption RAM has been erased Notice that the LEDs will continue flashing even when you press the reset button on the Prototyping Board You may press switch S2 again and repeat the last steps to watch the LEDs e TOGGLESWITCH C demonstrates the use of costatements to detect s
82. m spreader will now remain off whenever you are in the project file where you defined the macro NOTE Refer to the Rabbit 4000 Microprocessor User s Manual for more information on the spectrum spreading setting and the maximum clock speed 44 RabbitCore RCM4200 4 6 Memory 4 6 1 SRAM All RCM4200 modules have 512K of battery backed data SRAM installed at U10 and the RCM4200 model has 512K of fast SRAM installed at U12 4 6 2 Flash EPROM All RCM4200 modules also have 512K of flash EPROM installed at U11 NOTE Rabbit Semiconductor recommends that any customer applications should not be constrained by the sector size of the flash EPROM since it may be necessary to change the sector size in the future Writing to arbitrary flash memory addresses at run time is discouraged Instead define a user block area to store persistent data The functions writeUserBlock and readUserBlock are provided for this Refer to the Rabbit 4000 Microprocessor Designer s Handbook for additional information 4 6 3 Serial Flash Up to 8 Mbytes of serial flash memory is available to store data and Web pages Sample programs in the SAMPLES RCM4200 Serial Flash folder illustrate the use of the serial flash memory User s Manual 45 46 RabbitCore RCM4200 5 SOFTWARE REFERENCE Dynamic C is an integrated development system for writing embedded software It runs on an IBM compatible PC and is designed for use with single board computers and
83. mable gain 1 2 4 5 8 10 16 and 20 V V 12 bits 11 bits single ended 180 us Auxiliary I O Bus Can be configured 6 address lines shared with para for 8 data lines and llel I O lines plus I O read write Serial Ports 4 shared high speed CMOS compatible ports all 4 configurable as asynchronous with IrDA 4 as clocked serial SPD 1 asynchronous clocked serial port shared with programming port 1 clocked serial port shared with serial flash 1 clocked serial port shared with A D converter 5 shared high speed CMOS compatible ports all 5 configurable as asynchronous with IrDA 4 as clocked serial SPD and 1 as SDLC HDLC 1 clocked serial port shared with serial flash 1 asynchronous clocked serial port dedicated for programming 86 RabbitCore RCM4200 Table A 1 RCM4200 Specifications continued Parameter RCM4200 RCM4210 Serial Rate Maximum asynchronous baud rate CLK 8 Slave Interface Slave port allows the RCM4200 to be used as an intelligent peripheral device slaved to a master processor Real Time Clock Yes Ten 8 bit timers 6 cascadable from the first Timers one 10 bit timer with 2 match registers and one 16 bit timer with 4 outputs and 8 set reset registers Watchdog Supervisor Yes Pulse Width Modulators 3 channels synchronized PWM with 10 bit counter 3 channels variable phase or sy
84. macro tells Dynamic C to select your configuration from a list of default configurations You will have three choices when you encounter a sample program with the TCPCONFIG macro l You can replace the TCPCONFIG macro with individual MY IP ADDRESS MY NET MASK MY GATEWAY and MY NAMESERVER macros in each program You can leave TCPCONFIG at the usual default of 1 which will set the IP configurations to 10 10 6 100 the netmask to 255 255 255 0 and the nameserver and gateway to 10 10 6 1 If you would like to change the default values for example to use an IP address of 10 1 1 2 for the RCM4200 module and 10 1 1 1 for your PC you can edit the values in the section that directly follows the General Configuration com ment in the TCP CONFIG LIB library You will find this library in the LIB TCPIP directory You can create a CUSTOM CONFIG LIB library and use a TCPCONFIG value greater than 100 Instructions for doing this are at the beginning of the TCP_CONFIG LIB library in the LIB TCPIP directory There are some other standard configurations for TCPCONFIG that let you select differ ent features such as DHCP Their values are documented at the top of the TCP_CON FIG LIB library in the LIB TCPIP directory More information is available in the Dynamic C TCP IP User s Manual 78 RabbitCore RCM4200 6 4 2 How to Set Up your Computer for Direct Connect Follow these instructions to set up your PC or notebook Check
85. med I O to Serial Flash Clocked Synchronous or 1 2 SCLKC to Serial Flash x JP15 Programmed I O Access to Serial Flash 2 3 Programmed I O to Serial Flash 1 2 FDX COL displayed by LED DS3 x JP16 LED DS3 Display 2 3 optional ACT displayed by LED DS3 NOTE The jumper connections are made using 0 Q surface mounted resistors 96 RabbitCore RCM4200 APPENDIX B PROTOTYPING BOARD Appendix B describes the features and accessories of the Proto typing Board and explains the use of the Prototyping Board to demonstrate the RCM4200 and to build prototypes of your own circuits The Prototyping Board has power supply connections and also provides some basic I O peripherals RS 232 LEDs and switches as well as a prototyping area for more advanced hardware development User s Manual 97 B 1 Introduction The Prototyping Board included in the Development Kit makes it easy to connect an RCM4200 module to a power supply and a PC workstation for development It also pro vides some basic I O peripherals RS 232 LEDs and switches as well as a prototyping area for more advanced hardware development For the most basic level of evaluation and development the Prototyping Board can be used without modification As you progress to more sophisticated experimentation and hardware development modifications and additions can be made to the board without modifying the RCM4200 module The Prototyping Boa
86. milar situation will take place if you use a dial up line to send a packet to the Internet Windows may try to send it via the local Ethernet network if it is also valid for that network The following IP addresses are set aside for local networks and are not allowed on the Internet 10 0 0 0 to 10 255 255 255 172 16 0 0 to 172 31 255 255 and 192 168 0 0 to 192 168 255 255 The RCMA200 uses a 10Base T type of Ethernet connection which is the most common scheme The RJ 45 connectors are similar to U S style telephone connectors except they are larger and have 8 contacts An alternative to the direct connection using a crossover cable is a direct connection using a hub The hub relays packets received on any port to all of the ports on the hub Hubs are low in cost and are readily available The RCM4200 uses 10 Mbps Ethernet so the hub or Ethernet adapter can be a 10 Mbps unit or a 10 100 Mbps unit In a corporate setting where the Internet is brought in via a high speed line there are typi cally machines between the outside Internet and the internal network These machines include a combination of proxy servers and firewalls that filter and multiplex Internet traf fic In the configuration below the RCM4200 could be given a fixed address so any of the computers on the local network would be able to contact it It may be possible to configure the firewall or proxy server to allow hosts on the Internet to directly contact the controller but
87. n chronized PWM with 16 bit counter 4 channels synchronized PWM with 10 bit counter 4 channels variable phase or syn chronized PWM with 16 bit counter Input Capture 4 input capture channels can be used to time input signals from various port pins Quadrature Decoder 1 quadrature decoder channel accepts inputs from external incremental encoder modules 2 quadrature decoder channels accept inputs from external incremental encoder modules Power pins unloaded 3 0 3 6 V DC 240 mA 3 6 V typ 275 mA at 3 6 V and 85 C max 3 0 3 6 V DC 200 mA 3 6 V typ 225 mA at 3 6 V and 85 C max Operating Temperature 40 C to 85 C Humidity 5 to 95 noncondensing Conni One 2 x 25 1 27 mm pitch IDC signal header One 2 x 5 1 27 mm pitch IDC programming header Board Size 1 84 x 2 42 x 0 84 47 mm x 61 mm x 21 mm User s Manual 87 A 1 1 A D Converter Table A 2 shows some of the important A D converter specifications For more details refer to the ADC7870 data sheet Table A 2 A D Converter Specifications Parameter Test Conditions Typ Max Analog Input Characteristics Input Capacitance 4 9 7 pF Input Impedance Common Mode 6 MQ Differential Mode 7 MQ Static Accuracy Resolution Single Ended Mode 11 bits Differential Mode 12 bits Integral Linearity 1 LSB 2 5 LSB Differential Linearity 0 5 LSB Dynamic Charac
88. n float offset float gain float offset float gain float offset float gain float offset ADDF 0 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset 2 float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset float gain float offset ADMA 3 float gain float offset 4 float gain float offset END 24 RabbitCore RCM4200 3 2 4 Real Time Clock If you plan to use the real time clock functionality in your application you will need to set the real time clock Set the real time clock using the SETRTCKB C sample program from the Dynamic C SAMPLES RTCLOCK folder using the onscreen prompts The RTC TEST C sample program in the Dynamic C SAMPLES RTCLOCK folder provides additional examples of how to read and set the real time clock User s Manual 25 26 RabbitCore RCM4200 4 HARDWARE REFERENCE Chapter 4 describes the hardware components and principal hardware subsystems of the RCM4200 Appendix A RCM4200 Specifica tions provides complete physical and electrical specifications Figure 5 shows the Rabbit based subsystems designed into the RCM4200 Customer specific applications RABBIT CMOS level signals 4000 Level Flash RS 232 RS 485 serial c
89. n netten 5 1 3 1 RCM4200 Development Kit recia eiet ae ie a a iS AAE nenen nnne teret tenentes 5 1 3 2 SOfLWAIG entere heit EE An ARR ARE LE En ENT AE iii 6 1 3 5 Online Doc mentation esie aeeiio EEEO a EEKE RIA a EEEE E SEERE 6 Chapter 2 Getting Started 7 2 1 Install Dynamic CREO RE A I ART 7 2 2 HardWare Connections iaia palate E R RENEE acini 8 2 2 1 Prepare the Prototyping Board for Development essent 8 2 2 2 Attach Module to Prototyping Board sessi ene ennnetn enne nennets 9 2 2 3 Connect Programming Cable ettet ie retraite aE a MS aee PE AE Eae ee EE PEN Ee E Gero Ewa ln 10 2 24 Connect POWER TR EN 11 2 3 Runa Sample Program eee EHI tenerte ti ren RM EE Re DEC ren kom ei 12 2 3 1 Runa Sample uerum 12 2 3 2 enlisted snobs errate 12 24 Where Do T Go From Here metere EE argo 13 DAN Technical ICI M 13 Chapter 3 Running Sample Programs 15 ues 15 3 2 Sample Programs 3er ete etie eet ee EER EE ig ese bes eue Deep rai 16 32 q1 Useot Senal Flash tete ott aiar 18 3 2 2 Serial Communica oN sesen rne irienner rir EE e E EE EErEE ar E EE ENE E EE ETAC EKER RETo 19 3 2 3 A D Converter Inputs RCM4200 0N1Y nennen enne en nennen ene 22 3 2 3 1 Downloading and Uploading Calibration Constants eene 23 3 24 RealTime Clock em sniene ra aer aE Ea aae EEn Ee EEE
90. nalog reference 49 VREF voltage 50 GND Ground Analog ground 4 1 1 Memory I O Interface The Rabbit 4000 address lines A0 A19 and all the data lines DO D7 are routed inter nally to the onboard flash memory and SRAM chips I 0 write IOWR and I 0 read IORD are available for interfacing to external devices and are also used by the RCM4200 Parallel Port A can also be used as an external I O data bus to isolate external I O from the main data bus Parallel Port B pins PB2 PB7 can also be used as an auxiliary address bus When using the auxiliary I O bus for any reason you must add the following line at the beginning of your program define PORTA AUX IO required to enable auxiliary I O bus Selected pins on Parallel Ports D and E as specified in Table 2 may be used for input capture quadrature decoder DMA and pulse width modulator purposes 4 1 2 Other Inputs and Outputs The PES PE7 pins can be brought out to header J2 instead of the STATUS and the two SMODE pins SMODEO and SMODEI as explained in Appendix A 6 RESET IN is normally associated with the programming port but may be used as an external input to reset the Rabbit 4000 microprocessor and the RCM4200 memory RESET OUT is an output from the reset circuitry that can be used to reset other peripheral devices 34 RabbitCore RCM4200 4 2 Serial Communication The RCM4200 module does not have any serial driver or receiver chips
91. namic C Function Reference Manual 5 2 7 1 Board Initialization Call this function at the beginning of your program This function initializes Parallel Ports A through E for use with the Prototyping Board Summary of Initialization 1 I O port pins are configured for Prototyping Board operation Unused configurable I O are set as tied outputs RS 232 is not enabled LEDs are off Sie da The slave port is disabled RETURN VALUE None 52 RabbitCore RCM4200 5 2 7 2 Alerts Polls the real time clock until a timeout occurs The RCM4200 will be in a low power mode during this time Once the timeout occurs this function call will enable the normal power source The A D converter oscillator will be disabled and enabled PARAMETERS timeout is the duration of the timeout in seconds RETURN VALUE None SEE ALSO brdInit Polls a digital input for a set value or until a timeout occurs The RCM4200 will be in a low power mode during this time Once a timeout occurs or the correct byte is received this function call will enable the normal power source and exit PARAMETERS dataport is the input port data register to poll e g PADR portbit is the input port bit 0 7 to poll value is the value of 0 or 1 to receive timeout is the duration of the timeout in seconds enter 0 for no timeout RETURN VALUE None User s Manual 53 5 2 8 Analog Inputs RCM4200 only The function calls used with the Prototyping Board
92. nd either edge pin is ground Plug in the AC adapter The PWR LED on the Prototyping Board next to the power con nector at J1 should light up The RCM4200 and the Prototyping Board are now ready to be used NOTE A RESET button is provided on the Prototyping Board next to the battery holder to allow a hardware reset without disconnecting power Other Power Supplies Development Kits sold outside North America include a wired header connector that may be used to connect your power supply to 3 pin header J1 on the Prototyping Board The power supply should deliver 8 V 30 V DC at 8 W User s Manual 11 2 3 Run a Sample Program If you already have Dynamic C installed you are now ready to test your programming connections by running a sample program Start Dynamic C by double clicking on the Dynamic C icon or by double clicking on derab _XXXX exe in the Dynamic C root directory where XXXX are version specific characters If you are using a USB port to connect your computer to the RCM4200 RCM4200 choose Options gt Project Options and select Use USB to Serial Converter under the Communications tab You may have to determine which COM port was assigned to the RS 232 USB converter 2 3 1 Run a Sample Program Find the file PONG Cc which is in the Dynamic C SAMPLES folder To run the program open it with the File menu compile it using the Compile menu and then run it by selecting Run in the Run menu The STDIO window will open
93. ne nenne 106 B 4 3 3 A D Converter Inputs coder eet He n he Eee c eee npe 106 B 4 3 2 Thermistor Input ees RE oun 108 B 4 3 3 A D Converter Calibratiom erret eviter etie AE wi cette viet 108 B 4 4 Serial Communication sescca eene nennen nnne enne ennet tns en terere etn ennt entente 109 MILIA 110 B 5 Prototyping Board Jumper Configurations eren ener enren rennen 111 Appendix C Power Supply 115 CT PowetrsSupplies ere DC DEPRECOR RU Deo de 115 C1 Battery Backup Circuits tee Rer ite edat oti REED aiar 115 6 ELM Reset Generator ER EP PES 116 Notice to Users 117 Index 119 Schematics 123 User s Manual RabbitCore RCM4200 1 INTRODUCTION The RCM4200 series of RabbitCore modules is one of the next generation of core modules that take advantage of new Rabbit 4000 features such as hardware DMA clock speeds of up to 60 MHz I O lines shared with up to six serial ports and four levels of alternate pin functions that include variable phase PWM auxiliary I O quadrature decoder and input capture Coupled with more than 500 new opcode instructions that help to reduce code size and improve processing speed this equates to a core module that is fast efficient and the ideal solution for a wide range of embedded applications The RCM4200 also features an integrated 10 100Base T Ethernet port an A D converter and a serial flash memory for mass storage Each production model has a Development Kit
94. nnect TxC TxD and GND on the sending board to RxC RxD and GND on the other board then with the programming cable attached to the other module run the sample program Once you have compiled and run this program you can test flow control by disconnecting TxD from RxD as before while the program is running Since the J4 header locations on the two Prototyping Boards are connected with wires there are no slip on jumpers at J4 on either Prototyping Board e SWITCHCHAR C This program demonstrates transmitting and then receiving an ASCII string on Serial Ports C and D It also displays the serial data received from both ports in the STDIO window To set up the Prototyping Board you will need to tie TxD and RxC together on the RS 232 header at J4 and you will also tie RxD and RxC_TxC TxC together using the jumpers supplied in the Development Kit as OE shown in the diagram si Once you have compiled and run this program press and release switches S2 and S3 on the Prototyping Board The data sent between the serial ports will be displayed in the STDIO window 20 RabbitCore RCM4200 e IOCONFIG_SWITCHECHO C This program demonstrates how to set up Serial Port E which then transmits and then receives an ASCII string when switch S2 is pressed The echoed serial data are displayed in the Dynamic C STDIO window Note that the I O lines that carry the Serial Port E signals are not the Rabbit 4000 defaults The Serial Port E
95. not be used with this sample program NOTE The above sample program will overwrite the existing calibration constants for the selected channel e AD RDVOLT ALL C Demonstrates how to read all single ended A D input channels using previously defined calibration constants The constants used to compute equivalent voltages are read from the user block data area so the sample program cannot be run using the Code and BIOS in RAM compiler option Compile and run this sample program once you have connected a positive voltage from 0 20 V DC for example the power supply positive output to analog input channels LNOIN LN6IN on the Prototyping Board and ground to GND Follow the prompts in the Dynamic C STDIO window Raw data and the computed equivalent voltages will be displayed Remember that analog input LN7 on the Prototyping Board is used with the thermistor and is not be used with this sample program e AD SAMPLE C Demonstrates how to how to use a low level driver on single ended inputs The program will continuously display the voltage averaged over 10 samples that is present on an A D converter channel except LN7 The constants used to compute equivalent voltages are read from the user block data area so the sample program cannot be run using the Code and BIOS in RAM compiler option Compile and run this sample program once you have connected a positive voltage from 0 20 V DC to an analog input except LN7 on the Pro
96. o medium circuits can be prototyped using point to point wiring with 20 to 30 AWG wire between the proto typing area the 43 3 V 5 V and GND traces and the surrounding area where surface 104 RabbitCore RCM4200 mount components may be installed Small holes are provided around the surface mounted components that may be installed around the prototyping area B 4 1 Adding Other Components There are pads for 28 pin TSSOP devices 16 pin SOIC devices and 6 pin SOT devices that can be used for surface mount prototyping with these devices There are also pads that can be used for SMT resistors and capacitors in an 0805 SMT package Each component has every one of its pin pads connected to a hole in which a 30 AWG wire can be soldered standard wire wrap wire can be soldered in for point to point wiring on the Prototyping Board Because the traces are very thin carefully determine which set of holes is con nected to which surface mount pad B 4 2 Measuring Current Draw The Prototyping Board has a current measurement feature available at header locations JP1 and JP2 for the 5 V and 3 3 V supplies respectively To measure current you will have to cut the trace on the bottom side of the Prototyping Board corresponding to the power supply or power supplies whose current draw you will be measuring Header loca tions JP1 and JP2 are shown in Figure B 5 Then install a 1 x 2 header strip from the Development Kit on the top side of the Prototy
97. ogramming cable In addition to Serial Port A the Rabbit 4000 startup mode SMODEO SMODE 1 STATUS and reset pins are available on the programming port The two startup mode pins determine what happens after a reset the Rabbit 4000 is either cold booted or the program begins executing at address 0x0000 The status pin is used by Dynamic C to determine whether a Rabbit microprocessor is present The status output has three different programmable functions 1 It can be driven low on the first op code fetch cycle 2 It can be driven low during an interrupt acknowledge cycle 3 t can also serve as a general purpose output once a program has been downloaded and is running The reset pin is an external input that is used to reset the Rabbit 4000 Refer to the Rabbit 4000 Microprocessor User s Manual for more information 38 RabbitCore RCM4200 4 3 Programming Cable The programming cable is used to connect the programming port of the RCM4200 to a PC serial COM port The programming cable converts the RS 232 voltage levels used by the PC serial port to the CMOS voltage levels used by the Rabbit 4000 When the PROG connector on the programming cable is connected to the programming port on the RCM4200 programs can be downloaded and debugged over the serial interface The DIAG connector of the programming cable may be used on header J1 of the RCM4200 with the RCM4200 operating in the Run Mode This allows the programming port to
98. ommunication AID Converter drivers on motherboard RabbitCore Module Figure 5 RCM4200 Subsystems User s Manual 27 4 1 RCM4200 Digital Inputs and Outputs Figure 6 shows the RCM4200 pinouts for header J2 Note 3 3 V IN RESET OUT IIOWR VBAT_EXT PA1 PA3 PA5 PA7 PB1_SCLKA PB3 PB5 PB7 PC1 PC3 RxC PC5 RxB PC7 RxA PE1 PE3 PE5 SMODEO PE7 STATUS PD4 LN1 PD3 LN3 PD5 LN5 PD7 LN7 VREF GND ORD RESET_IN PAO PA2 PA4 PAG PBO_SCLKB PB2 PB4 PB6 PCO PC2_TxC PC4_TxB PC6_TxA PEO PE2 ENET EN PE4 PE6 SMODE1 PDO LNO PD2 LN2 PD4 LN4 PD6 LN6 CONVERT GND n c not connected These pinouts are as seen on the Bottom Side of the module Figure 6 RCM4200 Pinout Headers J2 is a standard 2 x 25 IDC header with a nominal 1 27 mm pitch 28 RabbitCore RCM4200 Figure 7 shows the use of the Rabbit 4000 microprocessor ports in the RCM4200 modules PAO PA7 PB2 PB7 PDO PD7 Ea RCM4210 only Port B RABBIT 4000 RES IN PB1 PC6 Real Time Clock 5 NORD Watchdo Misc I O sio 3 RESET OUT 11 Timers IOWR PC4 AID Converter Slave Port STATUS PC5 Serial Port B Clock Doubler SMODEO Backup Battery Support Figure 7 Use of Rabbit 4000 Ports The ports on the Rabbit 4
99. op 2K of the reserved user block memory area 3800 39FF This leaves the address range 0 37FF in the user block available for your application These address ranges may change in the future in response to the volatility in the flash memory market in particular sector size The sample program USERBLOCK INFO Cin the Dynamic C SAMPLESNUSERBLOCK folder can be used to determine the version of the ID block the size of the ID and user blocks whether or not the ID user blocks are mir rored the total amount of flash memory used by the ID and user blocks and the area of the user block available for your application The USERBLOCK CLEAR C sample program shows you how to clear and write the con tents of the user block that you are using in your application the calibration constants in the reserved area and the ID block are protected User s Manual 49 5 2 4 SRAM Use The RCM4200 module has a battery backed data SRAM and a program execution SRAM Dynamic C provides the protected keyword to identify variables that are to be placed into the battery backed SRAM The compiler generates code that maintains two copies of each protected variable in the battery backed SRAM The compiler also generates a flag to indicate which copy of the protected variable is valid at the current time This flag is also stored in the battery backed SRAM When a protected variable is updated the inactive copy is modified and is made active only when the upda
100. ou will need to have the following items e If you don t have Ethernet access you will need at least a 10Base T Ethernet card available from your favorite computer supplier installed in a PC e Two RJ 45 straight through Ethernet cables and a hub or an RJ 45 crossover Ethernet cable Figure 14 shows how to identify the two Ethernet cables based on the wires in the trans parent RJ 45 connectors Same Different color order color order in connectors in connectors Straight Through Crossover Cable Cable Figure 14 How to Identify Straight Through and Crossover Ethernet Cables Ethernet cables and a 10Base T Ethernet hub are available from Rabbit Semiconductor in a TCP IP tool kit More information is available at www rabbit com Now you should be able to make your connections User s Manual 69 Connect the AC adapter and the serial programming cable as shown in Chapter 2 Get ting Started Ethernet Connections There are four options for connecting the RCM4200 module to a network for develop ment and runtime purposes The first two options permit total freedom of action in selecting network addresses and use of the network as no action can interfere with other users We recommend one of these options for initial development No LAN The simplest alternative for desktop development Connect the RCM4200 module s Ethernet port directly to the PC s network interface card using an RJ 45 crossover cab
101. ow for an exclusion zone of 0 04 1 mm around the RCMA200 in all directions when the RCM4200 is incorporated into an assembly that includes other printed circuit boards An exclusion zone of 0 08 2 mm is recom mended below the RCM4200 when the RCM4200 is plugged into another assembly Figure A 2 shows this exclusion zone Exclusion Zone Figure A 2 RCM4200 Exclusion Zone User s Manual 85 Table A 1 lists the electrical mechanical and environmental specifications for the RCM4200 Table A 1 RCM4200 Specifications A D Converter Resolution A D Conversion Time including 120 us raw Parameter RCM4200 RCM4210 Microprocessor Rabbit 4000 at 58 98 MHz Rabbit 4000 at 29 49 MHz EMI Reduction Spectrum spreader for reduced EMI radiated emissions Ethernet Port 10 100Base T RJ 45 3 LEDs Data SRAM 512K 8 bit Fast SRAM 512K 8 bit Flash Memory 512K 8 bit Serial Flash Memory 8 Mbytes 4 Mbytes Backup Bate eooo 25 parallel digital T O lines 35 parallel digital I O lines General Purpose I O e configurable with four layers of configurable with four layers alternate functions of alternate functions Additional Inputs 2 startup mode reset in CONVERT 2 startup mode reset in Additional Outputs Status reset out analog VREF Status reset out 8 channels single ended Anglia or 4 channels differential u Program
102. ping Board at the header location s whose trace s you cut The header strip s will allow you to use an ammeter across their pins to measure the current drawn from that supply Once you are done measuring the current place a jumper across the header pins to resume normal operation Bottom Side O JP1 JP2 se US Cut traces CURRENT MEASUREMENT JRA Ge WA es A or T JRZ SM Figure B 5 Prototyping Board Current Measurement Option NOTE Once you have cut the trace below header location JP1 or JP2 you must either be using the ammeter or have a jumper in place in order for power to be delivered to the Prototyping Board User s Manual 105 B 4 3 Analog Features RCM4200 only The Prototyping Board has typical support circuitry installed to complement the ADS7870 AID converter on the RCM4200 model the A D converter is not available on the RCM4210 model B 4 3 1 A D Converter Inputs Figure B 6 shows a pair of A D converter input circuits The resistors form an approx 11 1 attenuator and the capacitor filters noise pulses from the A D converter input The 470 Q inline jumpers allow other configurations see Table B 6 and provide digital isolation when you are not using an A D converter Parallel Port D is available These jumpers optimize using RabbitCore modules with or without A D converters if you are designing your own circuit the best performance for the A
103. r Direct Connect iii 79 6 5 Run the PINGME C Sample Program innen nen nennen nennen eterne 80 6 6 Running Additional Sample Programs With Direct Connect esses 80 6 7 Where Do I Go From Here ss occ eet te eee PER eter dee reete op ree eee ies 81 Appendix A RCM4200 Specifications 83 A 1 Electrical and Mechanical Characteristics essere neret enne en 84 AT Y AD CODVGTIGE eoe peor oO RIED RERO RAO RIBERA 88 WB m codes 89 A 2 Rabbit 4000 DC Characteristics iii 90 A 3 I O Buffer Sourcing and Sinking Limit iii 91 ALA Bus LEoading iia Re PERRO a aLe 91 AS Contormal Coating e e eee seii aa Luria ioni 94 A 6 Jumper Configurations i 95 Appendix B Prototyping Board 97 Bell Introduction ien ia nani eet Rp pe E re 98 B 1 1 Prototypino Board Features e eene retener Eh dee Pe ede eT Herde POE E REP 99 B 2 Mechanical Dimensions and Layout i 101 B 3 PowerSupply cote rrr EUR HERRERA be rr RR tr prt rina 102 RabbitCore RCM4200 B 4 Using the Prototyping Board sese enr en entente trennen 103 B 4 1 Adding Other Components 5 eee teorie i ee DU p DEEP ORE E hebes ten 105 B 4 2 Measuring Current DraW ii 105 B 4 3 Analog Features RCM4200 only eese esee eene nennen enne enne ennt en
104. rd is shown below in Figure B 1 with its main features identified RCM4200 Module Connector RCM4200 Standoff Mounting SMT Prototyping Area Current Measurement Headers Backup 5V 3 3 V and Battery GND Buses 59 00000000000 90000909900000 SS 000000000000000 SO O GEO O DIO O80 O ql Ca I i S o RCM4200 Module Extension Header Switches Figure B 1 Prototyping Board RS 232 Header SMT Prototyping Area 98 RabbitCore RCM4200 B 1 1 Prototyping Board Features Power Connection A a 3 pin header is provided for connection to the power supply Note that the 3 pin header is symmetrical with both outer pins connected to ground and the center pin connected to the raw V input The cable of the AC adapter provided with the North American version of the Development Kit is terminated with a header plug that connects to the 3 pin header in either orientation The header plug leading to bare leads provided for overseas customers can be connected to the 3 pin header in either orientation Users providing their own power supply should ensure that it delivers 8 24 V DC at 8 W The voltage regulators will get warm while in use Regulated Power Supply The raw DC voltage provided at the 3 pin header is routed to a 5 V switch
105. reliability of the Rabbit 4000 chip Table A 4 outlines the DC characteristics for the Rabbit 4000 at 3 3 V over the recom mended operating temperature range from T4 40 C to 85 C VDDro 3 0 V to 3 6 V Table A 4 3 3 Volt DC Characteristics Symbol Parameter Min Typ Max I O Ring Supply Voltage 3 3 V 3 0 V 3 3 V 3 6 V VDDro T O Ring Supply Voltage 1 8 V 1 65 V 1 8 V 1 90 V High Level Input Voltage Vin VDDyo 3 3 V ZON Low Level Input Voltage Yi VDDyjo 3 3 V oy High Level Output Voltage Vou VDDyo 3 3 V ZAN Low Level Output Voltage VoL VDDyjo 3 3 V d I O Ring Current 29 4912 MHz I 10 13 3 2536 ud I All other I O mA DRIVE except TXD TXDD TXD TXDD 90 RabbitCore RCM4200 A 3 I O Buffer Sourcing and Sinking Limit Unless otherwise specified the Rabbit I O buffers are capable of sourcing and sinking 8 mA of current per pin at full AC switching speed Full AC switching assumes a 29 4 MHz CPU clock with the clock doubler enabled and capacitive loading on address and data lines of less than 70 pF per pin The absolute maximum operating voltage on all I O is 3 6 V A 4 Bus Loading You must pay careful attention to bus loading when designing an interface to the RCMA200 This section provides bus loading information for external devices Table A 5 lists the capacitance for the various RCM4200 I O ports Table A 5 Capacitance of Rabbit 4000
106. rm as the IP address An example netmask is 255 255 255 0 This netmask has 8 zero bits in the least significant portion and this means that 28 addresses are a part of the local network Applied to the IP address above 216 103 126 155 this netmask would indicate that the following IP addresses belong to the local network 216 103 126 0 216 103 126 1 216 103 126 2 etc 216 103 126 254 216 103 126 255 The lowest and highest address are reserved for special purposes The lowest address 216 102 126 0 is used to identify the local network The highest address 216 102 126 255 is used as a broadcast address Usually one other address is used for the address of the gateway out of the network This leaves 256 3 253 available IP addresses for the example given User s Manual 73 6 2 2 How IP Addresses are Used The actual hardware connection via an Ethernet uses Ethernet adapter addresses also called MAC addresses These are 48 bit addresses and are unique for every Ethernet adapter manufactured In order to send a packet to another computer given the IP address of the other computer it is first determined if the packet needs to be sent directly to the other computer or to the gateway In either case there is an Ethernet address on the local network to which the packet must be sent A table is maintained to allow the protocol driver to determine the MAC address corresponding to a particular IP address If the table is empty
107. s in bytes define COUTBUFSIZE 15 define DINBUFSIZE 15 define DOUTBUFSIZE 15 define MYBAUD 115200 set baud rate endif main serCopen MYBAUD open Serial Ports C and D serDopen MYBAUD serCwrFlush flush their input and transmit buffers serCrdFlush serDwrFlush serDrdFlush serCclose MYBAUD close Serial Ports C and D serDclose MYBAUD 110 RabbitCore RCM4200 B 5 Prototyping Board Jumper Configurations Figure B 8 shows the header locations used to configure the various Prototyping Board options via jumpers e gt U gt V U gt UU UU ECCT P J J JP J J JP J J P J P e TINOT NONM EANNAN D 0 0 0 0 0 0 0 E JP24 ez Figure B 8 Location of Configurable Jumpers on Prototyping Board Table B 6 lists the configuration options using either jumpers or 0 surface mount resistors Table B 6 RCM4200 Prototyping Board Jumper Configurations Header Description Pins Connected Pactor Default JP1 5 V Current Measurement 1 2 Via trace or jumper Connected JP2 3 3 V Current Measurement 1 2 Via trace or jumper Connected i TxD on header J4 x I PCO TxD LED DS2 JP4 JP4 12 PCO to LED DS2 n c PCO available on header J2 User s Manual 111 Table B 6 RCM4200 Prototyping Board Jumper Configurations continued
108. ser s Manual 39 A program runs in either mode but can only be downloaded and debugged when the RCMA200 is in the Program Mode Refer to the Rabbit 4000 Microprocessor User s Manual for more information on the pro gramming port 4 3 2 Standalone Operation of the RCM4200 Once the RCM4200 has been programmed successfully remove the programming cable from the programming connector and reset the RCM4200 The RCM4200 may be reset by cycling the power off on or by pressing the RESET button on the Prototyping Board The RCM4200 module may now be removed from the Prototyping Board for end use installa tion CAUTION Power to the Prototyping Board or other boards should be disconnected when removing or installing your RCM4200 module to protect against inadvertent shorts across the pins or damage to the RCM4200 if the pins are not plugged in cor rectly Do not reapply power until you have verified that the RCM4200 module is plugged in correctly 40 RabbitCore RCM4200 4 4 A D Converter RCM4200 only The RCM4200 has an onboard ADS7870 A D converter whose scaling and filtering are done via the motherboard on which the RCM4200 module is mounted The A D converter multiplexes converted signals from eight single ended or four differential inputs to Serial Port B on the Rabbit 4000 The eight analog input pins LNO LN7 each have an input impedance of 6 7 MQ depending on whether they are used as single ended or differential inputs Th
109. sistance with Dynamic C e Check the Rabbit Semiconductor Technical Bulletin Board at www rabbit com support bb e Use the Technical Support e mail form at www rabbit com support If the sample programs ran fine you are now ready to go on Additional sample programs are described in the Dynamic C TCP IP User s Manual Please refer to the Dynamic C TCP IP User s Manual to develop your own applications An Introduction to TCP IP provides background information on TCP IP and is available on the CD and on our Web site User s Manual 81 82 RabbitCore RCM4200 APPENDIX A RCM4200 SPECIFICATIONS Appendix A provides the specifications for the RCM4200 and describes the conformal coating User s Manual 83 A 1 Electrical and Mechanical Characteristics Figure A 1 shows the mechanical dimensions for the RCM4200 0 125 dia 3 2 0 19 5 Please refer to the RCM4200 footprint diagram later in this appendix for precise header locations i Y o gt ri a Qe SE EX VN Yy V of B i e 47 S Figure A 1 RCM4200 Dimensions NOTE All measurements are in inches followed by millimeters enclosed in parentheses All dimensions have a manufacturing tolerance of 0 01 0 25 mm 84 RabbitCore RCM4200 It is recommended that you all
110. te functions allow you to customize the parallel I O to meet your specific needs For example use WrPortI PEDDR amp PEDDRShadow 0x00 to set all the Port E bits as inputs or use WrPortI PEDDR amp PEDDRShadow OxFF to set all the Port E bits as outputs When using the auxiliary I O bus on the Rabbit 4000 chip add the line define PORTA AUX IO required to enable auxiliary I O bus to the beginning of any programs using the auxiliary I O bus The sample programs in the Dynamic C SAMPLES RCM4200 folder provide further examples 5 2 2 Serial Communication Drivers Library files included with Dynamic C provide a full range of serial communications sup port The RS232 LIB library provides a set of circular buffer based serial functions The PACKET LIB library provides packet based serial functions where packets can be delimited by the 9th bit by transmission gaps or with user defined special characters Both libraries provide blocking functions which do not return until they are finished transmitting or receiving and nonblocking functions which must be called repeatedly until they are fin ished allowing other functions to be performed between calls For more information see the Dynamic C Function Reference Manual and Technical Note TN213 Rabbit Serial Port Software 5 2 3 User Block Certain function calls involve reading and storing calibration constants from to the simulated EEPROM in flash memory located at the t
111. te is 100 complete This assures the integrity of the data in case a reset or a power failure occurs during the update process At power on the application program uses the active copy of the variable pointed to by its associated flag The sample code below shows how a protected variable is defined and how its value can be restored main protected int statel state2 state3 SysIsSoftReset restore any protected variables The bbram keyword may also be used instead if there is a need to store a variable in battery backed SRAM without affecting the performance of the application program Data integrity is not assured when a reset or power failure occurs during the update process Additional information on bbram and protected variables is available in the Dynamic C User s Manual 5 2 5 RCM4200 Cloning The RCM4200 does not have a pull up resistor on the PB1 CLKA line of the program ming port Because of this the procedure to generate clones from the RCM4200 differs from that used for other RabbitCore modules and single boards computers You must set the CL FORCE MASTER MODE macro to 1 in the Dynamic C CLONECONFIG LIB library to use the RCM4200 as a master for cloning An RCM4200 master will not run the appli cation and further debugging is not possible as long as the CL FORCE MASTER MODE macro is set to 1 Any cloned RCM4200 modules will be sterile meaning that they can not be used as a master for cloning To develop and
112. teristics Throughput Rate 52 ksamples s Voltage Reference Accuracy Vier 2 048 V and 2 5 V 0 05 0 25 Buffer Amp Source Current 20 uA Buffer Amp Sink Current 20 mA Short Circuit Current 20 mA 88 RabbitCore RCM4200 A 1 2 Headers The RCM4200 uses a header at J3 for physical connection to other boards J3 is a 2 x 25 SMT header with a 1 27 mm pin spacing J1 the programming port is a 2 x 5 header with a 1 27 mm pin spacing Figure A 3 shows the layout of another board for the RCM4200 to be plugged into These reference design values are relative to one of the mounting holes 0 875 22 2 Y 0 050 x 1 27 RCM4200 Series Footprint 0 284 lt 3 7 2 0 334 8 5 Figure A 3 User Board Footprint for RCM4200 User s Manual 89 A 2 Rabbit 4000 DC Characteristics Table A 3 Rabbit 4000 Absolute Maximum Ratings Symbol Parameter Maximum Rating TA Operating Temperature 40 to 85 C Ts Storage Temperature 55 to 125 C Vin Maximum Input Voltage peo 2 VDDjo Maximum Operating Voltage 3 6 V Stresses beyond those listed in Table A 3 may cause permanent damage The ratings are stress ratings only and functional operation of the Rabbit 4000 chip at these or any other conditions beyond those indicated in this section is not implied Exposure to the absolute maximum rating conditions for extended periods may affect the
113. the MAC address is determined by sending an Ethernet broadcast packet to all devices on the local network asking the device with the desired IP address to answer with its MAC address In this way the table entry can be filled in If no device answers then the device is nonexistent or inoperative and the packet cannot be sent Some IP address ranges are reserved for use on internal networks and can be allocated freely as long as no two internal hosts have the same IP address These internal IP addresses are not routed to the Internet and any internal hosts using one of these reserved IP addresses cannot communicate on the external Internet without being connected to a host that has a valid Internet IP address The host would either translate the data or it would act as a proxy Each RCM4200 RabbitCore module has its own unique MAC address which consists of the prefix 0090C2 followed by a code that is unique to each RCM4200 module For exam ple a MAC address might be 0090C2C002C0 TIP You can always obtain the MAC address on your module by running the sample program DISPLAY MAC C from the SAMPLES TCPIP folder 74 RabbitCore RCM4200 6 2 3 Dynamically Assigned Internet Addresses In many instances devices on a network do not have fixed IP addresses This is the case when for example you are assigned an IP address dynamically by your dial up Internet service provider ISP or when you have a device that provides your IP addresses using
114. ther RCM4200 model you will lose the serial flash s functionality if you try to use the serial port in the asynchronous mode NOTE Since Serial Port C is shared with the serial flash exercise care if you attempt to use Serial Port C for other serial communication Your application will have to manage the sharing negotiations to avoid conflicts when reading or writing to the serial flash Serial Port D may also be used as a clocked serial port Note that PDO provides the SCLKD ouput automatically when Serial Port D is set up as a clocked serial port Serial Port E which is available only on the RCM4210 can also be configured as an SDLC HDLC serial port The IrDA protocol is also supported in SDLC format by Serial Port E Serial Port E must be configured before it can be used The sample program IOCONFIG SWITCHECHO C in the Dynamic C SAMPLES RCM4200 SERIAL folder shows how to configure Serial Port E User s Manual 35 Table 3 summarizes the possible parallel port pins for the serial ports and their clocks Table 3 Rabbit 4000 Serial Port and Clock Pins i TXA PC6 PC7 PD6 TXD PCO PCI Serial Port A program RXA PC7 PD7 PE7 Serial Port D RXD PCI PD1 PEI i t DIES part SCLKA PBI SCLKD _ PDO PEO PE3 PC3 Serial Port B TXB PC4 PC5 PD4 TXE PD6 PC6 PE6 used by A D RXB PCS PDS PES Serial Port E RXE PD7 PC7 PE7 converter on RCM4210 RCM4200 SCLKB PBO only RCL
115. totyping Board and ground to GND Follow the prompts in the Dynamic C STDIO window Raw data and the computed equiv alent voltages will be displayed If you attach a voltmeter between the analog input and ground you will be able to observe that the voltage in the Dynamic C STDIO window tracks the voltage applied to the analog input as you vary it 22 RabbitCore RCM4200 THERMISTOR C Demonstrates how to use analog input LN7 to calculate temperature for display to the Dynamic C STDIO window This sample program assumes that the thermistor is the one included in the Development Kit whose values for beta series resistance and resistance at standard temperature are given in the part specification Install the thermistor at location JP25 on the Prototyping Board before running this sample program Observe the temperature changes shown in the Dynamic C STDIO window as you apply heat or cold air to the thermistor 3 2 3 1 Downloading and Uploading Calibration Constants The Tera Term utility called for in these sample programs can be downloaded from hp vector co jp authors VA002416 teraterm html These sample programs must be compiled to flash memory To do so select Options gt Project Options in Dynamic C then select the Compiler tab and select Code and BIOS in Flash for the BIOS Memory Setting Before you compile and run these sample programs you will also need to connect the RS 232 header at J4 to your PC as shown in th
116. vailable on header J4 A header strip at J4 allows you to connect a ribbon cable and a ribbon cable to DB9 connector is included with the Development Kit The pinouts for these locations are shown in Figure B 4 a z o GND i ED zn J4 RxD RxC TxD TxC RS 232 3 3V GND GND IRST OUT NORD IIOWR IRST_IN VBAT_EXT PA1 PA3 PA5 PA7 PB1 PB3 RCM4100 Ps5 Signals Fer PC1 PC3 PC5 PC7 PE1 PE3 PES PE7 PD1 LN1 PD3 LN3 PDS LNS PD7 LN7 VREF PAO PA2 PA4 PAG PBO PB2 PB4 PB6 PCO PC2 PC4 PC6 PEO PE2 PE4 PE6 PDO LNO PD2 LN2 PD4 LN4 PD6 LN6 RERRERRRERRRERERRRGERREEL E 000000000000000000000000 N AGND LN6IN OO LNSIN LN4IN OQ LN3IN LN2IN OO LN1IN LNOIN Analog Inputs Figure B 4 Prototyping Board Pinout The analog signals are brought out to labeled points at header location J3 on the Prototyping Board Although header J3 is unstuffed a 2 x 7 header can be added Note that analog signals are only available from the RCM4200 included in the Development Kit the RCM4210 model does not have an A D converter User s Manual 103 All signals from the RCM4200 module are available on header J2 of the Prototyping Board The remaining ports on the Rabbit 4000 microprocessor are used for RS 232 serial communication Table B 2 lists the signals on header J2 and explains how they are used on the Prototyping Board Table B 2 Use of RCM4200 S
117. witch presses using the press and release method of debouncing LEDs DS2 and DS3 on the Proto typing Board are turned on and off when you press switches S2 and S3 S2 and S3 are controlled by PB4 and PBS respectively Once you have loaded and executed these five programs and have an understanding of how Dynamic C and the RCM4200 modules interact you can move on and try the other sample programs or begin building your own User s Manual 17 3 2 1 Use of Serial Flash The following sample programs can be found in the SAMPLES RCM4200 Serial Flash folder SERIAL _FLASHLOG C This program runs a simple Web server and stores a log of hits on the home page of the serial flash server This log can be viewed and cleared from a browser at http 10 10 6 100 You will likely have to first configure your net work interface card for a 10Base T Half Duplex 100Base T Half Duplex or an Auto Negotiation connection on the Advanced tab which is accessed from the control panel Start gt Settings gt Control Panel by choosing Network Connections SFLASH_INSPECT C This program is a handy utility for inspecting the contents of a serial flash chip When the sample program starts running it attempts to initialize a serial flash chip on Serial Port C Once a serial flash chip is found the user can perform five different commands to print out the contents of a specified page set all bytes on the specified page to a
118. with your administrator if you are unable to change the settings as described here since you may need administrator privileges The instructions are specifically for Windows 2000 but the interface is similar for other versions of Windows TIP If you are using a PC that is already on a network you will disconnect the PC from that network to run these sample programs Write down the existing settings before changing them to facilitate restoring them when you are finished with the sample pro grams and reconnect your PC to the network 1 Go to the control panel Start gt Settings gt Control Panel and then double click the Network icon 2 Select the network interface card used for the Ethernet interface you intend to use e g TCP IP Xircom Credit Card Network Adapter and click on the Properties button Depending on which version of Windows your PC is running you may have to select the Local Area Connection first and then click on the Properties button to bring up the Ethernet interface dialog Then Configure your interface card for a 10Base T Half Duplex or an Auto Negotiation connection on the Advanced tab NOTE Your network interface card will likely have a different name 3 Now select the IP Address tab and check Specify an IP Address or select TCP IP and click on Properties to assign an IP address to your computer this will disable obtain an IP address automatically IP Address 1
119. z NOTE Do not depend on the flash memory sector size or type in your program logic The RCM4200 and Dynamic C were designed to accommodate flash devices with various sector sizes in response to the volatility of the flash memory market Developing software with Dynamic C is simple Users can write compile and test C and assembly code without leaving the Dynamic C development environment Debugging occurs while the application runs on the target Alternatively users can compile a program to an image file for later loading Dynamic C runs on PCs under Windows 95 and later Programs can be downloaded at baud rates of up to 460 800 bps after the program compiles User s Manual 47 Dynamic C has a number of standard features e Full feature source and or assembly level debugger no in circuit emulator required e Royalty free TCP IP stack with source code and most common protocols e Hundreds of functions in source code libraries and sample programs gt Exceptionally fast support for floating point arithmetic and transcendental functions gt RS 232 and RS 485 serial communication gt Analog and digital I O drivers gt 1 C SPI GPS file system gt LCD display and keypad drivers Powerful language extensions for cooperative or preemptive multitasking e Loader utility program to load binary images into Rabbit targets in the absence of Dynamic C e Provision for customers to create their own source code libraries and augment on l

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