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CML147786CX cpuModuleTM User`s Manual

1. 98 Troubleshooting a PC 104 System 101 How to Obtain Technical Support Chapter 8 Limited Warranty cc ccc ec ccceecens 103 Table Of Figures CML147786CX Block Diagram 5 CML147786CX Basic Connector Locations 10 CML147786CX Connector Locations 24 CML147786CX Jumper Locations Top 89 CML147786CX Jumper Locations Bottom 90 Table Of Tables Power 0 015101011101557755454854255348325432845488333448835885454587525885784855 58 8 CML 147 786CX Connectors soci cicossanccciestavaascagseacsevacseogsnenoastesdenastene 25 Auxiliary Power Connector CN3 26 Serial Port Base Address an
2. 68 Basic Interrupt Information for Programmers 74 5538151605 185111122 77 Multi Color LED 52 4725555 28555852225355835558575258288452252548553583884 80 Real Time Clock and CMOS Memory 81 Parallel Port Control 752355 55455535545425485345558538852257585885583252455578488 84 Storing Applications On board 5 85 Configuring the ATA IDE Disk Chip Socket 86 Chapter 6 Hardware Reference ccceecccccecees 87 Jumpers and Solder Jumper Settings 88 Onboard PCL Devices 2452 Sate eats ee wie vealed 93 18150118101081 17110671005 5 2255355255555555854325255885285325538528888523435 94 Processor Thermal Management 95 Chapter 7 Troubleshooting 00 c cece ewe ccseecees 97 Common Problems and Solutions
3. 43 USB Connector CENTI dei a a A eae ES 44 10 100 Base T and TX Connector CN20 45 Audio CNIT 55 24475385474889784455482378484384538857255 46 PC 104 Bus CN1 Amie No oss age crcl du alae dare tom teeta das aS ats 47 PC 104 Plus PCI Bus CN16 3558754784 51 Configuring the cpuModule BIOS Setup 55 Disabling Fail Safe Boot ROM 56 Quick Boot DESC T ROT sersa e E Aedes vata e 57 Configuring with the RTD Enhanced Award BIOS 58 Using the cpuModule 59 Memo 817 60 11 690115104016553 1 181 45725557 775255 85578752385258525528485855 61 Hardware Interrupts 4 7517877555587755884477888558838775577525 63 The RTD Enhanced Award BIOS 65 Thermal Throttling 66 1915001780781550110 35 4585228545458884288888 84 67 Advanced Digital I O Ports DIO
4. O CN7 CN6 55988 1100 CN20 ae 3000000000 O10 30 oo o oe CN3 D1 CN9 02 CN4 Figure 4 CML147786CX Jumper Locations Top CML147786CX RTD Embedded Technologies Inc 89 8 0 5 OO o OR eoooooo ooo oo oon ooo Of o con 7 gl O wew rtd com 07 oood ooo oooooooood g o o o o o o o o o o o o o o o Figure 5 CML147786CX Jumper Locations Bottom RTD Embedded Technologies Inc CML147786CX 90 CML147786CX Table 34 Jumpers and Default Settings 2 pin jumper Used to enable disable 120 ohm termination resistor on first serial port for RS 422 485 mode default Open no termination 2 pin jumper Used to enable disable 120 ohm termination resistor on first serial port for RS 422 485 mode default Open no termination 3 pin jumper Used to select power for an ATA IDE Disk Chip socket e to2 is 5 Volts on board e 2 to 3 is 3 3 Volts on board default Positions 2 and 3 2 pin jumper Used for setting to boot to Fail Safe Boot ROM and restoring factory BIOS settings default Open 2 pin jumper Factory use only do not close default Open 3 pin jumper Used to select power for the Flat Panel Backlight e 1to2is12V e 2to
5. 37 TTL Flat Panel Video Connector CN19 38 EIDE Connector CNG 77888 IN TEAR 39 ATA IDE Disk Chip Socket U8 ooo ccc ceeccssssscssecesccsseceeascsseeesncenees 41 Bus Mouse Connector CN4 oi scccesepencceiesdavagacagsvessedectesgsnaneentecdenaneets 43 USB Connector CNIT scrierii nra a R aS 44 10 100 Base T and TX Connector CN20 45 180177211855106751 1 46 PC 104 XT Bus Connector CN1 47 PC 104 AT Bus Connector CN2 48 PC 104 Bus Siemal 4545 2 48 PC 104 Plus Bus Signal Assignments 51 1019 5570871811771655 455555555558884782555534454 8 58 1559155151 1678011 180 5 5255 52544548 8525 60 I O Addresses Reserved for the cpuModule 61 Hardware Interrupts Used on the cpuModule 63 7
6. 7 1515 6 267 14718518755 woo fso o 16185577777 17854 51855 7 19 Skeno vooo Notes eISA bus refresh is not supported by this cpuModule eISA Masters are not supported by this cpuModule Keying pin positions have the pin cut on the bottom of the board and the hole plugged in the connector to prevent misalignment of stacked modules This is a feature of the PC 104 specification and should be implemented on all mating PC 104 modules eSignals marked with are active low eAll bus lines can drive a maximum current of 4 mA at TTL voltage levels PC 104 Bus Signals The following table contains brief descriptions of the PC 104 bus signals Table 25 PC 104 Bus Signals AEN Address ENable when this line is active high it means a DMA trans fer is being performed and therefore the DMA controller has control over the data bus the address bus and the control lines BALE Bus Address Latch Enable active high When active it indicates that address lines SAO to SA19 are valid CML147786CX RTD Embedded Technologies Inc 48 Table 25 PC 104 Bus Signals DACKx a DMA ACKnowledge x 0 7 active low used to acknowledge DMA re quests DRQx I DMA Request x 0 7 these are asynchronous lines used by peripheral devices to request DMA service They have increasing priority from DRQO up to DRQ7 A DMA request is performed by setting the DRQ line high and keeping it high until the corresponding DACK line is ac
7. Transmit Data fout 3 ino fe Eoo Seo M jout J5 9 7 5 3 1 GND GND when using RS485 Mode When using the serial port in RS485 mode the serial transmitters are enabled and disabled under software control The transmitters are en abled by manipulating the Request To Send RTS signal of the serial port controller This signal is controlled by writing bit 1 of the Modem Control Register MCR as follows e If MCR bit 1 1 then RTS 0 and serial transmitters are disabled e If MCR bit 1 0 then RTS 1 and serial transmitters are enabled For more information on the serial port registers including the MCR please refer to a standard PC AT hardware reference for the 16550 type UART CML147786CX RTD Embedded Technologies Inc 30 multiPort CN6 Parallel Port Mode The parallel port is available on connector CN6 Make sure the BIOS setup sets the multiPort to parallel port You can use the BIOS Setup to select the parallel port s address associated interrupt and choose between its operational modes SPP ECP EPP 1 7 and EPP 1 9 The pinout of the connector allows a ribbon cable to directly connect it to a DB25 connector thus providing a standard PC compatible port The following tables lists the parallel port signals and explains how to connect it to a DB25 connec tor to obtain a PC compatible port For correct operation keep the length of the cable connect ing the cpuModule and pa
8. tem is reset The counter is refreshed or set back to zero by reading from a specific register The watchdog can also be put into an inactive state in which no resets or interrupts are generated The ability to generate an interrupt allows the application to gracefully recover from a bad state For example consider a system that has a reset time out of 2 seconds interrupt time out of 1 second and the watchdog timer is refreshed every 0 5 seconds If something goes wrong an interrupt is gener ated The Interrupt service routine then attempts to restart the application software If it is success ful the application is restarted in much less time than a full reboot would require If it is not successful the system is rebooted Due to system latency it is recommended that the Watchdog be refreshed at about half of the reset time out period or half of the interrupt time out period whichever is applicable Register Description The Advanced Watchdog Timer has two Setup Registers and a Runtime Register The Setup Reg isters are set by the BIOS and can be adjusted by entering the BIOS Setup Utility and going to In tegrated Peripherals See Configuring with the RTD Enhanced Award BIOS on page 58 for more details The Setup Register may also be read by the driver to determine if the Watchdog is enabled and the interrupt and base address that it is using In the following register description sections each register is described
9. BIOS extension such as the M Systems DiskOnChip If such a device is installed the cpuModule will almost cer tainly be destroyed Table 18 ATA IDE Disk Chip Socket U8 b VDD may be set to 3 3V or 5V with jumper JP4 Installing and Configuring the ATA IDE Disk Chip To ensure proper installation and of the ATA IDE Disk Chip follow the following configuration steps Note that the first few steps must be performed before installing the Disk Chip e Before installing the ATA IDE Disk Chip in the Disk Chip Socket U16 specify the Disk Chip supply voltage by setting jumper JP4 to select either 3 3V or 5V Re fer to page 88 for more details e Next apply power to the system and press the delete key repeatedly to enter the BIOS setup screen Once in the BIOS specify the following settings e Enable the cpuModule s secondary IDE channel e Specify the IDE mode of the ATA IDE Disk Chip For more information on the supported IDE modes refer to page 86 Save the settings in the BIOS setup CML147786CX RTD Embedded Technologies Inc 41 e Remove power from the system The preceding steps should be performed before installing the Disk Chip in the ATA IDE Disk Chip Socket These steps ensure that the system is properly configured for the correct device and supply voltage so neither the Disk Chip or cpuModule are damaged e Insert the Disk Chip in the ATA IDE Disk Chip Socket aligning pin 1 with the squa
10. e How to return a product RTD Embedded Technologies Inc 97 Common Problems and Solutions The following table lists some of the common problems you may encounter while using your cpu Module and suggests possible solutions If you are having problems with your cpuModule please review this table before contacting techni cal support Windows Linux does not Flat panel is enabled and set to Disable flat panel or set it to a higher res display entire screen a lower resolution than the op olution erating system resolution cpuModule will not boot no power or wrong polarity check for correct power on PC 104 bus connectors incorrect setup install jumper JP5 reboot and press Del video disabled etc key to run Setup defective or mis connected de check for misaligned bus connectors vice on bus remove other cards from stack cable connected backwards verify all cables are connected correctly Disk Chip installed backwards check for a Disk Chip installed in socket backwards does not recognize Setup jumper JP5 installed turn off power remove JP5 reboot changes will not boot from particu device not bootable use sys command on drive or re format the lar drive or device device using the s switch device not formatted format drive using s switch power not connected to boot connect power cable to floppy or hard drive drive CML147786CX RTD Embedded Technologies Inc 98 erratic operation excessive
11. expect to achieve boot times of 8 seconds or less With certain system configura tions boot times of under 5 seconds may be possible The above times are typical times for the BIOS to finish booting They do not include Operating System load time Different operating systems have radically different boot times If boot times are critical for your system be sure to use an operating system that can load quickly The exact boot time of your system will depends on its configuration Some factors that may affect boot time are e Hard Drives During POST all IDE devices are initialized Some IDE devices may be very slow to initialize Removing or disabling unused IDE devices may improve boot times e Boot Order The BIOS searches for a boot device based on the order specified in the BIOS Making your boot device the first item in this list may improve boot times e BIOS Extension Devices Some add on cards e g Ethernet controllers SCSI controllers may contain BIOS extensions These BIOS extensions may add several seconds to the boot time e VGA Controller VGA Controllers have a VGA BIOS which must be initialized during POST Just like BIOS extension devices it takes time for the initialization Removing all VGA controllers from the system and disabling the onboard VGA may improve boot times e ISA Plug N Play If your system does not contain any ISA Plug N Play boards you may disable this feature in the BIOS to improve boot t
12. COMI On board ISA device 1 C e o On board ISA device board ISA device CD E E 55555 primary IDE hard disk pATbu bus ATA IDE Disk Chip a bus socket a is available for use if no floppy disk is present in the sys tem a floppy disk is disabled in Setup b IRQ12 is available if there is no PS 2 mouse in the system and the PS 2 mouse controller is disabled in the BIOS Setup c IRQ14 is available for use if no primary hard drive controller is present in the system and hard disk is disabled in Setup CML147786CX RTD Embedded Technologies Inc 63 d IRQ15 is available for use if no ATA IDE Disk Chip is installed in the system and the secondary IDE channel is dis abled in Setup All PCI devices are capable of sharing an interrupt The PC 104 specification also provides a means for ISA devices to share an interrupt However interrupt sharing on the ISA bus is not supported by all devices CML147786CX RTD Embedded Technologies Inc 64 The RTD Enhanced Award BIOS The RTD Enhanced Award BIOS Basic Input Output System is software that interfaces hardware specific features of the cpuModule to an operating system OS Physically the BIOS software is stored in a Flash EPROM on the cpuModule Functions of the BIOS are divided into two parts The first part of the BIOS is known as POST Power On Self Test software and it is active from the time power is applied until an OS b
13. IDE de vices The connector provides all signals and power needed to use a 2 5 form factor laptop hard drive Also the first 40 pins of the connector provide all of the signals needed to interface to a 3 5 or 5 form factor hard drive CD ROM drive or other EIDE device The larger form factors use a 40 pin 0 1 inch spacing connector so an adapter cable or adapter board is needed In order to use faster than UDMA Mode 2 Ultra ATA 33 an 80 conductor cable is required The BIOS automatically detects the presence of an 80 conductor cable To connect to an 80 conductor cable to CN12 and adapter board is required CML147786CX Table 17 EIDE Connector CN9 275 mo oma o 15555 25 10197 1011710 119187985 IORDY DDMARDY DSTROB 1557 a pm o a PDIAGDAO ao m o 36 DA2 RTD Embedded Technologies Inc 39 Table 17 EIDE Connector CN9 Continued __1651 7 7 fesio 4215 57 44775 CML147786CX RTD Embedded Technologies Inc 40 ATA IDE Disk Chip Socket U8 The ATA IDE Disk Chip socket is a 32 pin socket that supports 3 3V or 5V miniature ATA IDE flash disk chips The socket allows a true IDE device to be attached to the board with either a socketed or soldered con nection Such true IDE devices are supported by all major operating systems and do not require special driv ers The ATA IDE Disk Chip socket does not support conven tional SSD memory devices or devices that install as a
14. Inc 102 CHAPTER 8 LIMITED WARRANTY RTD Embedded Technologies Inc warrants the hardware and software products it manufactures and produces to be free from defects in materials and workmanship for one year following the date of shipment from RTD Embedded Technologies INC This warranty is limited to the original pur chaser of product and is not transferable During the one year warranty period RTD Embedded Technologies will repair or replace at its op tion any defective products or parts at no additional charge provided that the product is returned shipping prepaid to RTD Embedded Technologies All replaced parts and products become the property of RTD Embedded Technologies Before returning any product for repair customers are required to contact the factory for an RMA number THIS LIMITED WARRANTY DOES NOT EXTEND TO ANY PRODUCTS WHICH HAVE BEEN DAMAGED AS A RESULT OF ACCIDENT MISUSE ABUSE such as use of incorrect input voltages improper or insufficient ventilation failure to follow the operating instructions that are provided by RTD Embedded Technologies acts of God or other contingencies beyond the control of RTD Embedded Technologies OR AS A RESULT OF SERVICE OR MODIFICATION BY ANYONE OTHER THAN RTD Embedded Technologies EXCEPT AS EXPRESSLY SET FORTH ABOVE NO OTHER WARRANTIES ARE EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT NESS FOR A PARTICULAR PURPOSE
15. and CMOS Memory Overview The cpuModule is equipped with a Real Time Clock RTC which provides system date and time functions When the cpuModule is turned off a battery must be attached to the utility connector to provide power to the RTC Without power the RTC will lose the date time information when the system is turned off The RTC also provides an alarm function This may be used to generate an interrupt at a particular time and date This feature is commonly used to wake up the system from Sleep Standby to run a scheduled task defragment the hard drive back up files etc In addition to the date time alarm functions the RTC contains several bytes of battery backed RAM commonly called CMOS memory Ina typical desktop PC the CMOS memory is used by the BIOS to store user settings This RTD cpuModule uses onboard flash to store user BIOS settings To pre serve compatibility with traditional PCs the RTD Enhanced BIOS also mirrors the user settings from flash in CMOS Therefore the contents of CMOS may be overwritten at boot time and should be treated as read only Accessing the RTC Registers You may access the RTC date time and CMOS memory using the Index and Data Registers located at I O addresses 70h and 71h e Address 70h is the Index register It must be written with the number of the register to read or write Valid values are 00h to 7Fh e Address 71h is the Data register It contains the contents of the register poin
16. and address lines eel 16 Memory Chip Select 16 bit this line active low is controlled by devic es mapped in the memory address space and indicates they have a 16 bit bus width MEMR This active low signal indicates a memory read operation Devices us ing this signal must decode the address on lines LA23 LA17 and SA19 SAO MEMW T O This active low signal indicates a memory write operation Devices us ing this signal must decode the address on lines LA23 LA17 and SA19 SAO OSC OSCillator clock with a 70 ns period and a 50 duty cycle It is a 14 31818 MHz always presents REFRESH This cpuModule does not support refresh on the ISA bus This pin is pulled high with a 4 7 K ohm resistor and may be driven by another card in the PC 104 stack This line is active low and indicates that the current bus cycle is a DRAM refresh cycle The refresh cycles are activated ev ery 15 microseconds CML147786CX RTD Embedded Technologies Inc 49 Table 25 PC 104 Bus Signals RESETDRV This line active high is used to reset the devices on the bus at power on or after a reset command SAO 19 Address bits 0 to 19 these lines are used to address the memory space and the I O space SAO is the least significant bit while SA19 is the most significant bit eee This active low signal indicates a transfer of the most significant data byte SD15 SD8 Eee 15 Data bits these are the high byte data bus lines SD8 is the least signif
17. be selected in Setup or by application software CML147786CX RTD Embedded Technologies Inc 84 Storing Applications On board The cpuModule was designed to be used in embedded computing applications In these applications magnetic media like hard disks and floppy disks are not very desirable It is better to eliminate mag netic storage devices and place your operating system and application software into the cpuModule s ATA IDE Disk Chip CML147786CX RTD Embedded Technologies Inc 85 Configuring the ATA IDE Disk Chip Socket Before installing a device in the ATA IDE Disk Chip socket it is highly recommended to first con figure the secondary IDE controller and device mode in the BIOS setup The secondary IDE controller must be enabled in the BIOS to allow read and write access to the de vice When a device is installed in the socket it will always appear as a master on the cpuModule s secondary IDE controller From the BIOS setup screen the user can also configure whether the socket contains a DMA mode or PIO mode device e DMA Mode DMA mode will reduce CPU overhead e PIO Mode When the socket is in PIO mode PIO transfers are supported PIO mode sup ports write protection CML147786CX RTD Embedded Technologies Inc 86 CHAPTER 6 HARDWARE REFERENCE This appendix gives information on the cpuModule hardware including e jumper settings and locations e solder jumper settings and locations e mechanical d
18. bus loading reduce number of PC 104 modules in stack remove termination components from bus signals remove any power supply bus termina tions power supply noise examine power supply output with oscillo scope glitches below 4 75 Vdc will trigger a reset add bypass caps power supply limiting examine power supply output with oscillo scope check for voltage drop below 4 75V when hard drive or floppy drive starts add bypass caps temperature too high add fan processor heatsink or other cool ing device s memory address conflict check for two hardware devices e g Ethernet Arcnet PCMCIA trying to use the same memory address check for two software devices e g EMM386 PCMCIA drivers etc trying to use the same memory addresses check for hardware and software devices trying to use the same memory address check for an address range shadowed see Advanced Setup screen while in use by another hardware or software device T O address conflict check for another module trying to use I O addresses reserved for the cpuModule be tween 010h and 01Fh check for two modules e g dataModules PCMCIA cards Ethernet trying to use the same I O addresses keyboard does not work keyboard interface damaged check if keyboard LEDs light by misconnection wrong keyboard type verify keyboard is an AT type or switch to AT mode floppy drive light always on cable misconnected check for floppy drive cable connected backward
19. controller can be disabled in the BIOS Set up Table 21 10 100 Base T and TX Connector CN20 Pin Termination connected to pin 4 Termination connected to pin 3 Termination connected to pin 8 Termination connected to pin 7 CML147786CX RTD Embedded Technologies Inc 45 Audio 111 An audio port is available on CN11 This is an full featured AC97 compliant port that also provides for Sound Blaster compatibility It provides a mono microphone input stereo line level input and a stereo output that can be configured as line level or headphone level The output is configured in the BIOS setup utility see Configuring with the RTD Enhanced Award BIOS on page 58 When used as a headphone output it will drive 32 Ohm speaker at 5 0mW The line input is a pseudo differential input A separate ground is provided to reference the left and right channel This ground must be externally attached to signal ground For best results connect the line input ground to signal ground at the signal source The will eliminate any common mode noise between the source and the cpuModule Table 22 Audio Connector CN11 TOPINDILPin Signa Function mow MIC_VREF 2 2V Supply to bias micro phones 5mA max MIC_IN Microphone input 1V RMS or 0 1V RMS LINE_IN_LEFT Line level input for left chan in out nel 1V RMS nominal LINEIN_GND Signal GND input for line in put THIS MUST BE CON NECTED TO GND For best
20. document are the property of their respective owners Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Introduction oc doi ek wae Eke tae Meee SS 3 The CML147786CX cpuModulle 4 Specifications ma arniran i E a A E 6 261018 212781601 5555575846 45855855858 87858458 9 Basic 01016 0601 100801015 885848888 655 88888858 10 Fail safe 6062 5557548372755845544883 11 Cable Kits ineen a a AN meneame 12 Connecting POWer scien Gia 425888578 13 Connecting the utility Cable 47 2253544444854435458384445558875225855845 14 Connecting 8 5510020755544588758335775845875888858455 15 Connecting to the PC 104 Bus ccc02sccodurihe dik 16 Connecting to the PC 104 Plus PCI Bus 17 Booting the cpuModule for the First Time 19 Booting to Boot Block Flash with Fail Safe Boot ROM 20 If You Misconfigure the cpuModule 21 For More Information 25374554585435535584388545344583885488558
21. manually reset the system The push button should be normally open and connect to ground when pushed Power Switch Pin 4 of the multifunction connector allows connection of an external push button switch to act as an ATX power switch or standby switch The push button should be normally open and connect to ground when pushed Battery Pin 9 of the multifunction connector is the connection for an external backup battery in the range 2 40 V to 4 15 V typically 3 0 or 3 6 V This battery is used by the cpuModule when system power is removed to preserve the date and time in the Real Time Clock CML147786CX RTD Embedded Technologies Inc 36 VGA Video Connector CN18 The following table gives the pinout of the video connector Table 14 VGA Video Connector CN18 Pin Signal Function imout DBT 1 Vertical Sync fout a 2175 Horizontal Sync DDCSCL Monitor communications in out clock 7 Red analog output DDCSDA Monitor communications data GREEN Green analog output BLUE Blue analog output out 10101 out DDC_5V 5V for Monitor Communica 77 UN OM BLUE out out jout Facing the connector pins of CN18 the pinout is D GND 10 3 1 7 a DDC_5V DDCSDA DDCSCL GREEN 8 2 6 4 CML147786CX Table 15 Supported Video Resolutions and BIOS Settings fw 32 32 16 RTD Embedded Technologies Inc 37 TTL Flat Panel Video Conne
22. own applications programs for the cpuModule This chapter includes information on the following topics e Memory map e I O Address map e Interrupts e Power On Self Tests POSTs e System Functions Watchdog Timer Real Time Clock Configuring the ATA IDE Disk Chip Socket e Utility Programs CML147786CX RTD Embedded Technologies Inc 59 Memory Map The ISA portion of the cpuModule addresses memory using 24 address lines This allows a maxi mum 01224 locations or 16 Megabytes of memory The table below shows how memory in the first megabyte is allocated in the system Table 28 First Megabyte Memory Map F0000 FFFFFh BIOS ROM 256 KB BIOS in Flash EPROM shadowed into DRAM dur ing runtime E0000 EFFFFh BIOS Decompres Used during boot to decompress the BIOS This should not be used for hardware devices however it is free for use after the system has booted DO0000 FFFFh Available This area is always available for hardware devices Legacy USB This area is used for USB keyboard and USB boot It can be freed by disabling USB Keyboard and by not attaching any USB storage devices Alternately the USB controller can be disabled This area is always immediately after the video BIOS C0000 CBFFFh Video BIOS If an external video card is used the size of this area may typical change e DOSieenedmenonams 7 7 77 CCE a Memory beyond the first megabyte can be accessed in real mode by using EMS or a sim
23. pin CN9 10 100 Base T and TX connector 10 pin CN18 AC97 Audio input and output 10 pin CN11 CMOS Battery Connector 2 pin JP8 Fan Power Connectors 2 pin JP3 and JP7 Physical Characteristics e Dimensions 4 25 x 3 850 x 0 6 inches 108 0 x 97 8 x 16mm e Weight mass 4 5 ounces 130 grams e PCB 14 layer mixed surface mount and through hole L During the time of this manual s publication 4GB was the largest available ATA IDE Disk Chip capacity CML147786CX RTD Embedded Technologies Inc 7 Operating environment e Power supply 5V 5 20 Watts e Operating temperature 40 to 85 degrees C case with proper cooling See Processor Thermal Management on page 105 e Storage temperature 55 to 125 degrees C e Operating relative humidity 0 to 95 non condensing Power Consumption Exact power consumption depends on the peripherals connected to the board the selected ATA IDE Disk Chip configuration and the memory configuration The table below lists power consumption for typical configurations and clock speeds Table 1 Power Consumption Module Speed RAM Disk Chip Consumption Consumption Typical Maximum CML147786CX 400 MHz 32 512 MB 11 6 W CML147786CX 650 MHz 32 512 MB 14 5 W CML147786CX RTD Embedded Technologies Inc 8 CHAPTER 2 GETTING STARTED For many users the factory configuration of the cpuModule can be used to get a PC 104 system operational If you are one of these
24. register map for the runtime region is shown below aDIO Runtime Registers Offset Register Name o Port 0 Data 176 1 Data a D10 Centroi CML147786CX RTD Embedded Technologies Inc 69 Digital I O Register Set Port 0 Data I O address aDIO_ Base 0 m p p e e e e P0 7 P0 6 P0 5 P0 4 P0 3 P0 2 PO 1 P0 0 Port 0 Data register is a read write bit direction programmable register A particular bit can be set to input or output A read of an input bit returns the value of port 0 A read of an output bit returns the last value written to Port 0 A write to an output bit sends that value to port zero Port 1 data I O address aDIO_ Base 1 wm CC P1 7 P1 6 P1 5 P1 4 P1 3 P1 2 P1 1 P1 0 Port 1 Data register is a read write byte direction programmable register A read on this register when it is programmed to input will read the value at the DIO connector A write on this register when it is programmed as output will write the value to the DIO connector A read on this register when it is set to output will read the last value sent to the DIO connector Multi Function I O address aDIO_Base 2 75575557575 Multi Function register is a read write register whose contents are set by the DIO Control register See the DIO Control register description for a description of this register CML147786CX RTD Embedded Technologies Inc 70 DIO Control I O address aDIO_Base 3 Read Access StrobeO Status Strobel Status
25. simply plugged onto a PC 104 stack Other PC 104 Plus boards may then con nect to the cpuModule s PC 104 Plus bus connector Supplying power to the PCI bus is provided by the cpuModule We recommend you follow the procedure described for the PC 104 bus There are three additional considerations when using the PCI bus PCI Bus signaling level the slot selection switches on add in boards and 3 3 volt power source for the expansion cards PCI Bus Signaling Levels The PCI bus can operate at 3 3 or 5 volt signaling levels This is controlled by solder blob jumper B1 and is configured at the factory for 3 3 volts from on board If you desire to use 5 volt signaling because you are connecting cards to the bus that require 5 volt signaling you have to change the sol der blob jumper B1 See Jumpers and Solder Jumper Settings on page 88 for details WARNING The bus can only operate as 3 3 Volt signaling OR 5 volt signaling not both You will have to ensure that all your ex pansion card can operate together at a single signaling level Slot Selection Switches Unlike PC 104 cards PC 104 Plus expansion cards have a slot selection switch or jumpers In total there are 4 PCI cards that can be stacked onto the cpuModule with switch positions 0 through 3 The distance from the CPU determines these switch settings The card closest to the CPU is said to be in slot 0 the next closest slot 1 and so on to the final card as slot 3 Th
26. this register masks off the corresponding bit in the DIO Compare register When all bits are masked off the DIOs comparator is disabled This condition means Event and Match mode will not generate an interrupt This register is used by Event and Match modes Compare Register A Read Write register used for Match Mode Bit values in this register that are not masked off are compared against the value on Port 0 A match or Event causes bit 6 of DIO Control to be set and if the DIO is in Advanced interrupt mode the Match or Event causes an interrupt CML147786CX RTD Embedded Technologies Inc 71 Interrupts The Digital I O can use interrupts 5 7 10 11 and 12 The mapped interrupt numbers are 0x0D OxOF 0x72 0x73 and 0x74 in HEX respectfully or 13 15 114 115 and 116 in decimal respectful ly To use any of the 5 listed interrupts set the interrupt aside for an ISA legacy device To set the interrupts aside enter the BIOS under PNP PCI CONFIGURATION Select Resources Controlled By and change the interrupt s you wish to use to Legacy ISA The interrupts you wish to use must then be selected in the Integrated Peripherals section of the BIOS under aDIO IRQ Advanced Digital Interrupts There are three advanced digital interrupt modes available These three modes are Event Match and Strobe The use of these three modes is to monitor state changes at the DIO connector The three modes are selected with bits D 4 3 of the DIO C
27. users you can get your system up and running quickly by following a few simple steps described in this chapter Briefly these steps are Connect power Connect the utility cable Connect a keyboard e Default BIOS Configuration e Fail Safe Boot ROM Connect a VGA monitor to the SVGA connector Refer to the remainder of this chapter for details on each of these steps CML147786CX RTD Embedded Technologies Inc 9 Basic Connector Locations The following figure and table show the connectors used in this chapter JPS CN16 JP6 CN18 BOOSTS OO OOOO OOOO OOOO OOOO OOOO ORY CN11 1 233 CN8 CN19 CN CNG 5098441140 CN1 CN20 on Hoodoo ooGooooO000000 6 OF 30 0 CN9 CN2 CN4 Figure 2 CML147786CX Basic Connector Locations For a complete listing of connectors please refer to Connector Locations on page 24 Pin 1 of each connector is indicated by a square solder pad on the bottom of the PC board and a white square silk screened on the top of the board CML147786CX RTD Embedded Technologies Inc 10 Fail safe b
28. you do not need to make additional connections to supply power If you are using the cpuModule without a PC 104 stack or with a stack that does not include a power supply refer to Auxiliary Power CN3 on page 26 for more details CML147786CX RTD Embedded Technologies Inc 13 Connecting the utility cable The Multifunction connector CN5 implements the following interfaces e AT keyboard e Speaker output e System reset input e Battery input To use these interfaces you must connect to the Multifunction connector making sure the orienta tion of pin 1 is correct If you are using the Multifunction cable from our cable kit the cable provides a small speaker a 5 pin PS 2 connector for the keyboard a push button for resetting the PC 104 sys tem and a lithium battery to provide backup power to the Real Time Clock To connect individual devices to the Multifunction connector please see Multifunction Connector CNS on page 35 CML147786CX RTD Embedded Technologies Inc 14 Connecting a Keyboard You may plug a PC AT compatible keyboard directly into the circular DIN connector of the Multi function cable in our cable kit The cable kit uses a mini DIN or PS 2 style keyboard connector Some older keyboards use a larger DIN connector you will need an adapter to plug these keyboards into the cpuMod ule Older keyboards can be switched between PC XT and AT operating modes with the mode usually selected by a swit
29. 0 no strobe 0 no strobe Port 1 Direction 1 strobe 1 strobe 0 Input Multi Function 1 Output Register Select Digital IRQ Status Digital IRQ Enable 00 Clear Mode 0 no digital interrupt 0 Disabled 01 Port 0 Direction 1 digital interrupt 1 Enabled 10 Mask Register 11 Compare Register Digital IRQ Mode 0 Event Mode 1 Match Mode DIO Control I O address aDIO_Base 3 Write Access Port 1 Direction 0 Input Multi Function 1 Output Register Select Reserved IRQ Mode 00 Clear Mode 00 Disabled 01 Port 0 Direction 01 Strobe 10 Mask Register 10 Event 11 Compare Register 11 Match Multi Function at aDIO_Base 2 Contents Based on Bits D 1 0 of DIO Control read write 00 Clear 70758757555 ozim out 01 Port 0 Dir O nomask t mask 1010 Mask m7 me ms ma ms m2 m1 mo __readiwrite 11 Compare Clear Register A read to this register Clears the IRQs and a write to this register sets the DIO Compare DIO Mask DIO Control 70101 and 10160 to zeros A write to this register is used to clear the board Port 0 Direction Register Writing a zero to a bit in this register makes the corresponding pin in the DIO connector an input Writing a one to a bit in this register makes the corresponding pin in the DIO connector an output Mask Register Writing a zero to a bit in this register will not mask off the corresponding bit in the DIO Compare register Writing a one to a bit in
30. 2177015278 2485588458557 48758 80 Mantial LED Colors jsssciscisacceieasessaacats acaecaseacdatasdenndevascgeedeadeotactetaceeets 80 RealTime Clock Registers wax wetss eye tance iia bacco ve eae 81 Jumpers and Default Settings xcs 3 sc cesscsssacdesesacatajogeasteeccante eects 91 Solder Jumpers and Default Settings 91 Onboard PCI Devices 93 CHAPTER 1 INTRODUCTION CML147786CX Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 This manual is meant for users developing with the CML147786CX cpu Module It contains information on hardware and software of the cpu Module READ THE SPECIFICATIONS FIRST The manual is organized as follows Introduction Introduces main features and specifications Getting Started Provides abbreviated instructions to get started Connecting the cpuModule Provides information on connecting the cpuModule to peripherals Configuring the cpuModule Provides information on configuring hardware and software Using the cpuModule Provides information needed to develop applications for the cpuModule The chapter includes general information on the cpuMo
31. 2mm 1 2 5 2 3 3 3V JP7 Continuous Fan Power 2 Pin 2mm 1 5V 2 GND JP8 RTC Battery 2 Pin 2mm 1 Vbatt 2 GND CML147786CX RTD Embedded Technologies Inc 25 Auxiliary Power CN3 WARNING If you improperly connect power the module will almost certainly be destroyed Please verify power connections to the module before applying power The power supply can be conveyed to the module either through the PC 104 Plus bus CN1 CN2 CN16 or through the Auxiliary Power Connector CN3 The cpuModule only uses 5 VDC and ground 12 VDC 12 VDC and 5 VDC may be required on other PC 104 boards in the system Table 3 Auxiliary Power Connector CN3 Pin J Signal Function Set enD forou zo fev evos 3 e Not Connected 47 5557 51515555657 1725175555 751 a fev evonsoe mo fav Senos m Nc NotConneciea m2 33V_ SeeNote The 3 3V pins 10 and 12 on the auxiliary power connec tor CN3 are connected to the 3 3V pins of the PC 104 Plus bus by default These pins are also configured to sup ply 3 3V to FP_VCC on the Flat Panel Video connector CN19 For more information on configuring the 3 3V pins on the auxiliary power connector CN3 the Flat Panel Video con nector CN19 or the PCI bus connector CN16 contact RTD Technical Support Insufficient current supply will prevent your cpuModule from booting The gauge and length
32. 3is 5V default Positions 2 and 3 3 pin jumper Used to select power for the Flat Panel Electronics e 1 to 2 is 3 3V e 2to3is 5V default Positions 1 nd 2 1s configured for 3 3V FPZ 1s sourced from the auxiliary power connector CN3 or the PC 104 Plus connector CN16 Table 35 Solder Jumpers and Default Settings Bl Three position solder jumper to select 3 3 or 5 volt signaling on the PCI bus Pads 1 2 shorted is 5 Volt signaling Pads 2 3 shorted is 3 3 Volt signaling Default Setting B2 Two position solder jumper to connect USB shield ground to frame ground Default is not connected e 1 2 PC 104 Plus PCI bus 3 3 volts supplied by power connector P9 pins 10 and 12 Default setting B4 Two position solder jumper to connect frame ground to digital ground De fault is not connected B3 Three position solder jumper to select the source of 3 3V on the PCI bus e 2 3 PC 104 Plus PCI bus 3 3 volts supplied by on board 3 3 volt reg ulator Maximum current source is two 2 amps RTD Embedded Technologies Inc 91 Table 35 Solder Jumpers and Default Settings B5 Two position solder jumper to connect Ethernet shield ground to frame ground Default is not connected B8 Solder blob B8 is factory set and rarely changed Contact RTD Technical support for more information CML147786CX RTD Embedded Technologies Inc 92 Onboard PCI Devices The CML147786CX cpuModule has several onboard PCI devices a
33. 8 bit digital I O or Flop py Drive port RTD Embedded Technologies Inc A simplified block diagram of the cpuModule is shown in Figure 1 Intel Celeron VT8606 Twister T SDRAM 400 650 MHz North Bridge 100 133 MHz SVGA 10 100 Ethernet Flat Panel PCI Bus 32 bit 33 MHz VT82C686B 2 x USB 1 1 South Bridge 1 Keyboard Mouse 2 x RS 232 422 485 m EIDE Parallel Port AC97 Audio M Floppy Drive RTD aDIO RTD Enhanced BIOS Watchdog Failsafe Boot ROM Figure 1 CML147786CX Block Diagram You can easily customize the cpuModule by stacking PC 104 modules such as video controllers modems LAN controllers or analog and digital data acquisition modules Stacking PC 104 modules on the cpuModule avoids expensive installations of backplanes and card cages and preserves the module s compactness RTD Enhanced Award BIOS is also implemented in the cpuModule This BIOS supports ROM DOS MS DOS Linux and Windows operating systems Drivers in the BIOS allow booting from floppy disk hard disk ATA IDE Disk Chip or boot block flash thus enabling the system to be used with traditional disk drives or non mechanical drives The cpuModule and BIOS are also compatible with most real time operating systems for PC com patible computers although these may require creation of custom drivers to use the watchdog timer CML147786CX RTD Embedded Technologies Inc 5 Specifications CML147786CX Inte
34. 885255584588 58588 22 Connecting the cpuModule eeeee 23 Connector Locations 754545 2544252454555528854588378745885785355588555858785585 58 24 Auxiliary POWerCEN3 2 84778888452485585487588877858 26 Serial Ports CN7 and CN8 575557753558555555558885858588544588885385885782488885588 28 multiPort CN6 Parallel Port Mode 31 multiPort CN6 ADIO Mode 32 multiPort CN6 Floppy Controller Mode 33 Multifunction Connector CNS 35 VGA Video Connector CN18 37 TTL Flat Panel Video Connector CN19 38 EIDE Connector CN9 55 N a A E N N ai 39 ATA IDE Disk Chip Socket U8 5 58255525753 87285828584 4 41 Bus Mouse Connector CN4
35. AND RTD Embedded Technologies EXPRESSLY DIS CLAIMS ALL WARRANTIES NOT STATED HEREIN ALL IMPLIED WARRANTIES INCLUDING IMPLIED WARRANTIES FOR MECHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THIS WARRANTY IN THE EVENT THE PRODUCT IS NOT FREE FROM DEFECTS AS WARRANTED ABOVE THE PURCHASER S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT AS PROVID ED ABOVE UNDER NO CIRCUMSTANCES WILL RTD Embedded Technologies BE LIABLE TO THE PURCHASER OR ANY USER FOR ANY DAMAGES INCLUDING ANY INCIDEN TAL OR CONSEQUENTIAL DAMAGES EXPENSES LOST PROFITS LOST SAVINGS OR OTHER DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS AND SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE RTD Embedded Technologies Inc 103 Innovation Blvd State College PA 16803 0906 USA Our website www rtd com CML147786CX RTD Embedded Technologies Inc 103 CML147786CX RTD Embedded Technologies Inc 104
36. CML147786CX cpuModule User s Manual RTD Enhanced Award BIOS Versions 6 00 xx TIGO RTD Embedded Technologies Inc Real Time Devices Accessing the Analog World BDM 610000059 ISO9001 and AS9100 Certified Rev C CML147786CX cpuModule User s Manual RTD Embedded Technologies Inc 103 Innovation Blvd State College PA 16803 0906 Phone 1 814 234 8087 FAX 1 814 234 5218 E mail sales rtd com techsupport rtd com web site http www rtd com Revision History Rev A Initial Release Rev B Added Quick Boot Description on page 57 Added Onboard PCI Devices on page 93 Revised Real Time Clock and CMOS Memory on page 81 Updated board diagrams Rev C Updated Mechanical Drawing in Mechanical Dimensions on page 94 Added EIDE specifications to Specifications on page 6 Updated Operating environment on page 8 Published by RTD Embedded Technologies Inc 103 Innovation Blvd State College PA 16803 0906 Copyright 2002 2007 by RTD Embedded Technologies Inc All rights reserved Printed in U S A The RTD Logo is a registered trademark of RTD Embedded Technologies cpuModule and utilityModule are trademarks of RTD Embedded Technologies PS 2 PC XT PC AT and IBM are trademarks of Interna tional Business Machines Inc MS DOS Windows Windows 95 Windows 98 and Windows NT are trade marks of Microsoft Corp PC 104 is a registered trademark of PC 104 Consortium All other trademarks appearing in this
37. Daylight Savings Enable When high the RTC will automatically update itself for Daylight Savings Time It is recommended to leave this bit low and let the operating system manage time zones and DST 01 RTC Status Register C Read Only e Bit 7 IRQ Flag Indicates that the Real Time Clock IRQ is asserted Goes high whenever one of the enabled inter rupt conditions in Register B occurs Bit 6 Periodic Flag Bit 5 Alarm Flag Bit 4 Update Ended Flag Bit 3 0 Reserved Reading this register will also clear any of the set flags IRQ Period ic Alarm Update Ended Note that even if the interrupt source is not enabled in Register B the flags in Register C bits 4 5 and 6 may still be set RTC Status Register D e Bit 7 Valid Time Date always reads 1 e 13105 6 0 Reserved CML147786CX RTD Embedded Technologies Inc 82 CML147786CX Table 33 Real Time Clock Registers RTC registers that are not listed above are used by the BIOS and should be considered Reserved Altering the contents of any unlisted RTC register may interfere with the opera tion of your cpuModule The specific uses of the RTC reg isters will depend on the BIOS version loaded on the cpuModule Contact RTD s technical support for more in formation RTD Embedded Technologies Inc 83 Parallel Port Control The parallel port may be operated in SPP output only EPP bi directional and ECP extended ca pabilities modes The mode may
38. M is to make the board bootable when the customer receives the cpuModule Fail Safe Boot ROM can be used as an indicator of the board s functionality when booting problems arise with another operating system This test can be accomplished by installing JP5 Installing JP5 forces the cpuModule to boot to Fail Safe Boot ROM as well as load the default BIOS settings The ROM DISK that contains the Fail Safe Boot ROM acts as an example of what can be programmed into the flash chip Last Fail Safe Boot ROM allows files to be transferred on or off the storage devices in the system by use of REMSERV and REMDISK two ROM DOS utilities If the user would need remote access to the system run REMSERV on the target system and REM DISK on the host system The end result would be that the storage devices on the target system would appear as additional drives on the host system Information could then be transferred between hard disks by using a standard NULL Modem cable over a serial port REMSERV makes the con nection appear as an additional drive to the user For details concerning this type of access please refer to the ROM DOS user s guide shipped with your board By default boards are shipped with fail safe boot ROM en able When Fail Safe Boot ROM is enabled the system will boot to it exclusively The first time your system will boot to the DOS prompt at the first available drive letter If you do not intend to use REMSERV or REMDISK or
39. al I O line s initial state is undetermined If the digital I O lines must power up to a known state an external 10 K Ohm resistor must be added to pull the line high or low Additionally when the CPU boots up interrupts 5 7 10 11 and 12 are masked off Setup Register Descriptions The aDIO has a Setup Register and four Runtime Registers The Setup Register is set by the BIOS and can be adjusted by entering the BIOS Setup Utility and going to Integrated Peripherals See Configuring with the RTD Enhanced Award BIOS on page 58 for more details The Setup Register may also be read by the driver to determine the base address and interrupt of the aDIO aDIO Watchdog Setup Register I O Port 0x1F aDIO WDT_Setup D8 o p a o Or f o w mw f w S Co f o fey S aDIO_Base 2 0 Selects the base address for aDIO and the Watchdog Timer based on the following ta ble aDIO_Base 2 0 aDIO Base __ Watchdog Timer Runtime I O Address Register I O Address foot E 0444 CML147786CX RTD Embedded Technologies Inc 68 aDIO_IRQ 2 0 Selects the Interrupt assigned to the aDIO based on the following table aDlO_IRQ 2 0 Interrupt Disabled mo fmo mo Reseved ma Reserved__ Runtime Register Descriptions The location of the Runtime registers for the digital I O lines is determined by the value in aDIO WDT_Setup aDIO_Base These 8 bit registers are written to zero upon power up The
40. bus Reserve interrupt as Legacy ISA in Setup aDIO Watchdog Timer or other ISA device Video appearance is un video buffer may be set to a set the video buffer size to a larger number clear small number which may cause problems with higher resolutions and colors depths CML147786CX RTD Embedded Technologies Inc 100 Troubleshooting a PC 104 System If you have reviewed the preceding table and still cannot isolate the problem with your cpuModule please try the following troubleshooting steps Even if the resulting information does not help you find the problem it will be very helpful if you contact technical support Simplify the system Remove items one at a time and see if one particular item seems to cause the problem Swap components Try replacing items in the system one at a time with similar items CML147786CX RTD Embedded Technologies Inc 101 How to Obtain Technical Support If after following the above steps you still cannot resolve a problem with your cpuModule please assemble the following information cpuModule model BIOS version and serial number list of all boards in system list of settings from cpuModule Setup program printout of autoexec bat and config sys files if applicable description of problem circumstances under which problem occurs Then contact factory technical support Phone 814 234 8087 Fax 814 234 5218 E mail techsupport rtd com CML147786CX RTD Embedded Technologies
41. by a register table The first row of the table list the bits D7 through DO The second row lists the field name for each bit The third row lists the properties of that bit r bit can be read w bit can be written to and c bit can be cleared The last row lists the value of the bit after reset The register table is then followed by a description of each of the fields where applicable Advanced Watchdog Setup Register I O Port 0x18 WDT _Setup gt ST a De o WDT_IRQ 2 0 Selects the Interrupt assigned to the Watchdog Timer WoT RGR Interrupt fo00 Disabled C C C 01 100 IRQ11 CML147786CX RTD Embedded Technologies Inc 77 Continued WOT IROI Interrupt mo Reserved 71775 Reg_Enable Set this bit to 1 to enable the Watchdog Runtime Register Set to 0 to disable When Disabled the Watchdog Runtime Register does not appear in the I O map and interrupts and resets are not generated by the Watchdog Timer aDIO Watchdog Setup Register I O Port 0x1F aDIO WDT_Setup D6 Da aDIO_Base a a rw Co f o fe o aDIO_Base 2 0 Selects the base address for aDIO and the Watchdog Timer based on the following ta ble aDIO_Base 2 0 aDIO Base ___ Watchdog Timer Runtime I O Address Register I O Address 66146 Watchdog Runtime Register The location of this register is determined by aDIO WDT_Setup aDIO_Base Reading this register also
42. ch on the back or bottom of the keyboard For correct operation with this cpuModule you must select AT mode CML147786CX RTD Embedded Technologies Inc 15 Connecting to the PC 104 Bus The PC 104 bus connectors of the cpuModule are simply plugged onto a PC 104 stack to connect to other devices We recommend you follow the procedure below to ensure that stacking of the modules does not damage connectors or electronics WARNING Do not force the module onto the stack Wiggling the mod ule or applying too much pressure may damage it If the module does not readily press into place remove it check for bent pins or out of place keying pins and try again e Turn off power to the PC 104 system or stack Select and install standoffs to properly position the cpuModule on the PC 104 stack e Touch a grounded metal part of the rack to discharge any buildup of static electricity e Remove the cpuModule from its anti static bag Check that keying pins in the bus connector are properly positioned Check the stacking order make sure an XT bus card will not be placed between two AT bus cards or it will interrupt the AT bus signals e Hold the cpuModule by its edges and orient it so the bus connector pins line up with the matching connector on the stack Gently and evenly press the cpuModule onto the PC 104 stack CML147786CX RTD Embedded Technologies Inc 16 Connecting to the PC 104 Plus PCI Bus The cpuModule is
43. ctor 1419 The following table gives the pinout of the flat panel video connector FP_VCC can be either 5V or 3V and is selected with JP10 FP_VBKLT can be either 5V or 12V and can be selected with JP9 See Jumpers and Solder Jumper Settings on page 88 for more details Table 16 TTL Flat Panel Video Connector CN19 Pin f Soni 7 Power for flat panel backlight out 3 FP_VDDEN Enable for flat panel power out a FP ENABIK Enable for Backlight Power out s fob feom fo 6 FP_DISPEN_ Display Enabie fou zo fowo feom fwo a FP Horizontai Syns fou B FP vsyne Vertical Syne fom wo fob feom fowo moo eak foo fo mo foo feom fewo a3 FP bto tS fou 141558595118557 7 1515585052 185572 161587055184575 a7 FP BLUE Buena fom 18 FP BLUES Blue bits SB fou 19 FP GREENO Green bito SB fou 20 FP GREENI Greenbti fow 21 FP GREEN2 Greenbit2 fom 22 FP GREENS Greenbn3 fow 23 FP GREENA Greenbna fowm 2 FP_GREENS Green bit5 25 FP ReDo Redbtotse fou 2s FP Rem Rebii fow a7 FP_RED2__ Redbit2 fown 23 FP Rebs Redons fow 23 FP Reba Redona fow 1 the ae power connector CN 3 or PC 104 Plus connector CN16 CML147786CX RTD Embedded Technologies Inc 38 EIDE Connector 1 9 The EIDE connector is a 44 pin 2mm connector that can connect to a variety of EIDE or
44. d IRQ Options 28 Seri l Portin RS 232 MOG o aa ee a lae I 28 RS 422 Serial Port Connections 29 RS 485 Serial Port Connections 29 Serial Port in RS 422 485 Mode 30 multiPort Parallel Port Connector Pinout CN6 31 multiPort Advanced Digital I O Connector Pinout CN6 32 multiPort Connector Floppy Pinout CN6 33 Multifunction Connector CNS 35 Keyboard Connector Pins on CNS 36 VGA Video Connector 118 4 4 2 4 37 Supported Video Resolutions and BIOS Settings
45. dule plus de tailed information on storing applications and system functions and us ing utility programs Hardware Reference Lists jumpers and their locations and mechanical dimensions Troubleshooting Offers advice on debugging problems with your system Warranty RTD Embedded Technologies Inc 3 The CML147786CX cpuModule The PC 104 cpuModules described in this manual are designed for industrial applications which re quire software and hardware compatibility with the PC AT world high speed number crunching operation low power consumption small physical dimensions high reliability good noise immunity This cpuModule is highly integrated combining all major functions of a PC AT computer on one compact board It integrates all primary I O functions of a AT compatible computer SVGA controller Analog SVGA output 18 bit Digital TFT Output UltraDMA 33 66 100 EIDE Controller a keyboard interface parallel port two versatile RS232 422 485 serial ports a Real Time Clock a speaker port a PS 2 mouse port two USB ports AC97 and Sound Blaster compatible audio port One twisted pair 10 100 Base T and TX connection based on an Intel 82559ER PHY It also enhances standard AT compatible computer systems by adding CML147786CX 4 ATA IDE Disk Chip socket Non volatile configuration without a battery Watchdog Timer Fail Safe Boot ROM A multiPort that can be configured as an ECP EPP Parallel Port 1
46. execution Interrupts are good for handling infrequent events such as keyboard activity What happens when an Interrupt occurs An IRQx pin on the PC104 bus makes a low to high transition while the corresponding interrupt mask bit is unmasked and the PIC determines that the IRQ has priority the PIC interrupts the pro cessor The current code segment CS instruction pointer IP and flags are pushed on the stack the CPU reads the 8 bit vector number from the PIC and a new CS and IP are loaded from a vector indicated by the vector number from the interrupt vector table that exists in the lowest 1024 bytes of memory The processor then begins executing instructions located at CS IP When the interrupt service routine is completed the CS IP and flags that were pushed onto the stack are popped from the stack into their appropriate registers and execution resumes from the point where it was inter rupted How long does it take to respond to an interrupt A DOS operating system can respond to an interrupt between 6 15uS A Windows system can take a much longer time when a service routine has been installed by a device driver implemented as a DLL from 250 1500uS or longer A VxD will take 20 60uS or longer The time the CPU spends in the interrupt is dependent on the efficiency of the code in the ISR These numbers are general guide lines and will fluctuate depending on operating system and version The amount of information that can be moved d
47. g in terrupts are shown in the following table Table 4 Serial Port Base Address and IRQ Options T O Address IRQ 03F8H IRQ4 02F8H IRQ3 03E8H IRQ4 02E8H IRQ3 Serial Port UART The serial port is implemented with a 16550 compatible UART Universal Asynchronous Receiver Transmitter This UART is capable of baud rates up to 115 2 kbaud in 16450 and 16550A compat ible mode and includes a 16 byte FIFO Please refer to any standard PC AT hardware reference for the register map of the UART RS232 Serial Port Default The full duplex RS232 mode is the default setting on the cpuModule With this mode enabled the serial port connector must be connected to RS232 compatible devices The following table gives the connector pinout and shows how to connect to an external serial connector either DB25 or DB9 compatible Table 5 Serial Port in RS 232 Mode Pin J Signal Function invout DB25 DBO Bcd _ DataGarrier Dereci n fe 2 bsn Data SetReady n 185 ReceiveData a Rs RequestTo Send 57 transmitan no e in 1 jout zl jout 6 JCTS_ _ 10159705910 fin jout in aaa 7 s m Ringindicae 0 oND Signal Ground CML147786CX RTD Embedded Technologies Inc 28 Facing the serial port s connector pins the pinout is 9 3 ee a 4 RS422 or RS485 Serial Port You may use BIOS Setup to configure the serial port as RS422 or RS485 In this case you
48. gramming take heart Most C compilers al low you to identify a procedure function as an interrupt type and will automatically add these instructions to your ISR with one important exception most compilers do not auto matically add the end of interrupt command to the procedure you must do this yourself Other than this and the few exceptions discussed below you can write your ISR just like any other routine It can call other functions and procedures in your program and it can access global data If you are writing your first ISR we recommend that you stick to the basics just something that will convince you that it works such as incrementing a global variable NOTE If you are writing an ISR using assembly language you are responsible for pushing and popping registers and using IRET instead of RET Writing a DOS Interrupt service routine ISR There are a few cautions you must consider when writing your ISR The most important is do not use any DOS functions or routines that call DOS functions from within an ISR DOS is not reentrant that is a DOS function cannot call itself In typical programming this will not happen because of the way DOS is written But what about when using interrupts Then you could have a situation such as this in your program If DOS function X is being executed when an interrupt occurs and the interrupt routine makes a call to DOS function X then function X is essentially being called while it is already act
49. icant bit SD15 the most significant bit SDO 7 T O Data bits these are the low byte data bus lines SDO is the least signifi cant bit SD7 the most significant bit SMEMR o Memory Read command active low SMEMW o Memory Write command active low SYSCLK System Clock 8 0MHz with a 50 duty cycle Only driven during ex ternal bus cycles TC Terminal Count this line is active high and indicates the conclusion of a DMA transfer PC 104 Bus Termination Termination of PC 104 bus signals is not recommended since this cpuModule incorporates source termination on bus signals and may cause malfunctions of the cpuModule CML147786CX RTD Embedded Technologies Inc 50 PC 104 Plus PCI Bus 1415 Connector CN16 carries the signals of the PC 104 Plus PCI bus These signals match definitions of the PCI Local Bus specification Revision 2 1 The following tables list the pinouts of the PC 104 Plus bus connector Table 26 PC 104 Plus Bus A __ is Fs 415556 755718 5 755 send 78555105555 _1777610 16 7 7_1 54785818 5 55 e ex m s fow O o fsm feo fso o fpo m jeo fee pew feooe SSCS mo fso few jo feb m esx mv fo foes 0 CS 1419 _775757155558557 15157758807 17155485588 m8 IDSELO eno fosen m9 aa fomes ue IDSEL3 Notes eThe KEY pins can be used to guarantee proper module installat
50. ilar memory manager See your OS or programming language references for information on memory managers CML147786CX RTD Embedded Technologies Inc 60 Input Output Address Map As with all standard PC 104 boards the Input Output I O space is addressed by 10 address lines SA0 SA9 This allows 210 or 1024 distinct I O addresses Any add on modules you install must therefore use I O addresses in the range 0 1023 decimal or 000 3FF hex If you add any PC 104 modules or other peripherals to the system you must ensure they do not use reserved addresses listed below or malfunctions will occur The exception to this is if the resource has been released by the user The table below lists I O addresses reserved for the cpuModule CML147786CX Table 29 I O Addresses Reserved for the cpuModule Address Range 000H 0O0FH 010H 01FH 020H 021H 022H 02FH 040H 043H 060H 064H 070H 071H 080H 08FH OAOH 0A1H OCOH ODFH OFOH OFFH 100H 101H 1FOH 1FFH 200H 201H 238H 23BH 2E8H 2EFH 2F8H 2FFH 378H 37FH 3BCH 3BFH 3E8H 3EFH Po 8 Hard disk Serial port 2 RTD Embedded Technologies Inc 61 Table 29 I O Addresses Reserved for the cpuModule Continued Floppy disk l 3FOH 3F7H aDIO Advanced Digital I O Ifa floppy or IDE controller is not connected to the system the I O addresses listed will not be occupied Select in BIOS 2 Only one of the I O addresses shown f
51. imensions e processor thermal management CML147786CX RTD Embedded Technologies Inc 87 Jumpers and Solder Jumper Settings Many cpuModule options are configured by positioning jumpers Jumpers are labeled on the board as JP followed by a number Some jumpers are three pins allowing three settings e pins 1 and 2 connected indicated as 1 2 e pins 2 and 3 connected indicated as 2 3 e no pins connected O Some jumpers are two pin allowing two settings e pins and 2 connected indicated as closed e pins and 2 un connected indicated as open 1 2 O Solder jumpers are set at the factory and are rarely changed Solder jumpers are located on the mod ule s solder side and component side The figures below shows the locations of the jumpers and solder jumpers used to configure the cpu Module To use the figure position the module with the PC 104 bus connector at the six o clock po sition and the component side facing up The table below lists the jumpers and their settings CML147786CX RTD Embedded Technologies Inc 88 JP5 CN16 JP6 30 0 0 00 0000 0000 11055 9992 9 9 9 3 9 9 9 9 912
52. imes CML147786CX RTD Embedded Technologies Inc 57 Configuring with the RTD Enhanced Award BIOS The cpuModule Setup program allows you to customize the cpuModule s configuration Selections made in Setup are stored on the board and are read by the BIOS at power on The BIOS setup utility includes a help pane that describes each option For more information about the BIOS options please contact the factory Starting Setup You can run Setup by e Re boot the cpuModule and repeatedly press the Del key When you are finished with Setup save your changes and exit The system will automatically reboot Using the Setup Program All displays in Setup consist of two areas The left area lists the available selections The right area displays help messages which you should always read To see the default setting press F1 If you need more information about the various BIOS settings and what they do contact RTD s technical support Field Selection You move between fields in Setup using the keys listed below Table 27 BIOS Setup Utility Keys ENV gt move between fields selects next previous values in fields lt PgUp gt lt PgDn gt lt Enter gt Go to the submenu for the field or list options of current field to previous menu then to exit menu CML147786CX RTD Embedded Technologies Inc 58 CHAPTER 5 USING THE CPUMODULE This chapter provides information for users who wish to develop their
53. ion Pin A1 can be re moved and the female side plugged for 5 0V I O signals Pin D30 can be modified in the same manner for 3 3V I O It is recommended that both KEY pins A1 and D30 be electrically connected to GND for shielding CML147786CX RTD Embedded Technologies Inc 51 PC 104 Plus PCI Bus Signals The following are brief descriptions of the PC 104 Plus PCI bus signals Address and Data AD 31 00 Address and Data are multiplexed A bus transaction consists of an address cycle fol lowed by one or more data cycles C BE 3 0 Bus Command Byte Enables are multiplexed During the address cycle the com mand is defined During the Data cycle they define the byte enables PAR Parity is even on AD 31 00 and C BE 3 0 and is required Interface Control Pins FRAME Frame is driven by the current master to indicate the start of a transaction and will re main active until the final data cycle TRDY Target Ready indicates the selected devices ability to complete the current data cycle of the transaction Both IRDY and TRDY must be asserted to terminate a data cycle IRDY Initiator Ready indicates the master s ability to complete the current data cycle of the transaction STOP Stop indicates the current selected device is requesting the master to stop the current trans action DEVSEL Device Select is driven by the target device when its address is decoded IDSEL Initialization Device Select i
54. is requirement means that all PC 104 Plus cards must be stacked either on the top or the bottom of the CPU not on both sides The slot setting method may vary from manufacturer to manufacturer but the concept is the same The CPU is designed to provide the correct delay to the clock signals to compensate for the bus length The correct switch setting ensures the proper clock delay setting interrupt assignment and bus grant request channel assignment Refer to the expansion board s manual for the proper settings Each expansion card must be in a different slot CML147786CX RTD Embedded Technologies Inc 17 PCI Bus Expansion Card Power 5 Volt DC The 5 volt power pins on the PC 104 Plus PCI bus are directly connected to the 5 volt pins on the PC 104 connector and the power connector CN3 pins 2 and 8 5 volt expansion boards can be powered directly from these pins 3 3 Volt DC The default source for the 3 3 volt power pins on the PC 104 Plus PCI bus is the power connector CN3 or a PC 104 Plus power supply The 3 3V can also be supplied from an on board power con verter The on board 5 volt to 3 3 volt converter is capable of suppling a maximum of 2 Amps of 3 3 volts to the PCI bus To use the on board power supply change solder blob B3 See Jumpers and Solder Jumper Settings on page 88 for details CML147786CX RTD Embedded Technologies Inc 18 Booting the cpuModule for the First Time You can now apply
55. ive Such a reentrance attempt spells disaster because DOS functions are not written to support it This is a complex concept and you do not need to understand it Just make sure that you do not call any DOS functions from within your ISR The one wrinkle is that unfortunately it is not obvious which library routines included with your compiler use DOS functions A rule of thumb is that routines which write to the screen or check the status of or read the keyboard and any disk I O routines use DOS and should be avoided in your ISR The same problem of reentrance exists for many floating point emulators as well meaning you may have to avoid floating point math in your ISR CML147786CX RTD Embedded Technologies Inc 75 The Code Refer to the DOS drivers that were shipped with this board or download them from our web site www rtd com The drivers are commented to help clarify their meaning Reading through the DOS drivers will give valuable insight into the board functionality CML147786CX RTD Embedded Technologies Inc 76 Watchdog Timer Control The cpuModule includes a Watchdog Timer which provides protection against programs hang ing or getting stuck in an execution loop where they cannot respond correctly The watchdog timer consists of a counter a reset generator and an interrupt generator When the counter reaches the interrupt time out it can generate an interrupt When the counter reaches the reset time out the sys
56. l Celeron CPU with Twister T Chipset 400 MHz to 650 MHz clock speed 0 95 1 10 V processor supply provided on board 32 kB L1 Cache 256 kB L2 Cache Math coprocessor 100 MHz Front Side Bus Memory Configurations 66 100 133 MHz SDRAM selectable in BIOS Available Memory Sizes 32MB 128MB 256MB 512MB Video Controller AGP S3 Savage SVGA Controller Analog SVGA Output 18 bit TTL Digital TFT Output 2 4 8 16 32 MB Frame Buffer DMA Interrupts Timers Six 6 DMA channels 8237 compatible Fifteen 15 interrupt channels 8259 compatible Three 3 counter timers 8254 compatible Advanced Programmable Interrupt Controller APIC USB ports 2 USB 1 1 ports Boot to USB devices Floppy Hard Drive CD ROM Flash Key ZIP Drive Ultra DMA 100 66 33 EIDE Controller e Transfer rate up to 100M sec using UltraDMA e Support ATAPI compliant devices including DVD drives e 48 bit LBA support for hard drives larger than 137 GB Support up to 2 2 tera Bytes Advanced Digital I O aDIO e Two 8 bit TTL compatible programmable Digital I O Ports plus two Strobe inputs e One port is bit direction programmable and the other is byte direction programmable e Advanced Interrupt modes Interrupt on change Interrupt on match Interrupt on strobe CML147786CX RTD Embedded Technologies Inc 6 Watchdog Timer e Selectable reset time out of 2sec 1990 0 75 sec 0 50 sec e Can generate an interrupt after 19 0 75
57. ll of which are listed in the table below Table 36 Onboard PCI Devices 3038 1106 USB Controller Controller Controller AC 97 Audio Codec e 97 Audio Codec CML147786CX RTD Embedded Technologies Inc 93 Mechanical Dimensions The following figure shows mechanical dimensions of the module Dimensions are in inches mm 4 250 107 950 3 550 90 170 3 250 82 550 0 350 8 890 0 650 16 510 0 350 8 890 N 0 eo N N N M co ad 5 1 0 o2 N mM ln 0 N oO qd p s mM 0 200 5 080 0 075 1 905 1 000 25 400 3 000 76 200 3 350 85 090 0 200 5 080 CML147786CX RTD Embedded Technologies Inc 94 Processor Thermal Management The industrial grade processor IC of the cpuModule must receive adequate cooling to ensure proper operation and good reliability The case temperature of the processor must not exceed 100 C CML147786CX RTD Embedded Technologies Inc 95 CML147786CX RTD Embedded Technologies Inc 96 CHAPTER 7 TROUBLESHOOTING CML147786CX Many problems you may encounter with operation of your cpuModule are due to common errors This chapter will help you get your system op erating properly It contains Common problems and solutions e Troubleshooting a PC 104 system e How to obtain technical support
58. must connect the serial port to an RS422 or RS485 compatible device When using RS422 or RS485 mode you can use the port in either half duplex two wire or full duplex four wire configurations For half duplex 2 wire operation you must connect RXD to TXD and connect RXD to TXD A 120 ohm termination resistors is provided on the cpuModule Termi nation is usually necessary on all RS422 receivers and at the ends of the RS485 bus If the termination resistor is required it can be enabled by closing jump er JP1 for Serial Port 1 or JP2 for Serial Port 2 When using full duplex typically in RS 422 mode connect the ports as shown in the table below Table 6 RS 422 Serial Port Connections When using half duplex in RS 485 connect the ports as shown in the table below Table 7 RS 485 Serial Port Connections Port 1 TXD Port 1 RXD Port 1 TXD Port 1 RXD Port 1 TXD Port 2 RXD Port 1 RXD Port 2 TXD CML147786CX RTD Embedded Technologies Inc 29 422 and RS485 Mode Pinout The following table gives the pinout of the serial port connector when RS422 or RS485 modes are enabled Table 8 Serial Port in RS 422 485 Mode C Pn Siona Function wout J DB9 18 6 s fao Receive Data _ 45 Transmit Daa e RxD Receive Data 7 Reserved 777556 7 a0 GND Signar ground Facing the serial port connector the pinout is Z B in o out So TXD
59. n Blvd State College PA 16803 0906 USA Our website www rtd com Our e mail techsupport rtd com RTD Embedded Technologies Inc CHAPTER 3 CONNECTING THE CPUMODULE This chapter contains necessary information for any of the connectors on the cpuModule CML147786CX RTD Embedded Technologies Inc 23 Connector Locations The figure and table below show all connectors and the ATA IDE Disk Chip sockets of the cpuMod ule BDOSTO OOOO OOOO OOOO OOD OOO OOOO OO RY 1 477 18 1 CN18 CN8 CN19 CN CNG 5098471105 CN17 05 CN20 o oko Fe Rowe ve ee Rovere Noro orone ooo o ooo ooo G66006000060 6 OH CN3 D1 CN9 CN2 CN4 Figure 3 CML147786CX Connector Locations Pin 1 of each connector is indicated by a square solder pad on the bottom of the PC board and a white box silkscreened on the top of the board CML147786CX RTD Embedded Technologies Inc 24 Table 2 CML147786CX Connectors U8 ATA IDE Disk Chip 32 pin Socket JP3 Switched Fan Power 2 Pin 2mm 1 5V 2 GND JP4 Disk Chip Power 3 Pin
60. of the wire used for connecting power to the cpuModule must be taken into consideration Some power connectors have clip leads on them and may have significant resistance Make sure that the input voltage does not drop below 4 8V at the 5V power pins A good rule of thumb is to use wire that can supply twice the power your system requires 5 VDC 12 VDC and 12 VDC voltages are not used by the module but are connected to the PC 104 bus connectors CNI and CN2 CML147786CX RTD Embedded Technologies Inc 26 Facing the connector pins the pinout of the Auxiliary Power connector is 11 9 7 5 3 1 2 10 8 6 4 2 Connect two separate wires to the 5V pins 2 and 8 on the power connector to ensure a good power supply We rec ommend that no less than 18 gauge wire be used and the length of this wire should not exceed 3 ft Always measure the voltage drop from your power supply to the power pins on the cpuModule The voltage at pins 2 and 8 should be 5V CML147786CX RTD Embedded Technologies Inc 27 Serial Ports 1 7 and 1 8 The two serial ports are implemented on connectors CN7 and CN8 respectively Each port is nor mally configured as a PC compatible full duplex RS232 port but you may use the Setup program to re configure it is as full duplex RS422 or half duplex RS485 The I O address and corresponding interrupt must also be selected using Setup The available I O addresses and the correspondin
61. oller This is selected in the BIOS Setup under Integrated Peripherals Only one floppy drive can be connected to the MultiPort and it is con figured as the second drive To boot the CPU from the MultiPort Floppy the following steps must be taken e Drive A must be set to 1 44 MB in the Standard CMOS Settings section of BIOS Setup Onboard MultiPort set to Floppy in the Integrated Peripherals section of BIOS Setup Swap Floppy Drive set to Enabled in the Advanced BIOS Fea tures section of BIOS Setup First Boot Device set to Floppy in the Advanced BIOS Features section of BIOS Setup Floppy drive with adapter board is attached to CN6 Pin 1 is indicated by a square solder pad on the pin This connector is located on the edge of the cpuModule along the PC 104 bus The following table shows the pin assignments to connect a flop py drive to the multiPort Table 11 multiPort Connector Floppy Pinout CN6 Floppy Drive Pin 8 odd pins 23 WDATA 12 22 CML147786CX RTD Embedded Technologies Inc 33 Table 11 multiPort Connector Floppy Pinout CN6 Continued odd pins z woe s 26 These signals must be pulled to 5V with separate 470 Ohm resistors CML147786CX RTD Embedded Technologies Inc 34 Multifunction Connector 145 The Multifunction connector implements the following functions Speaker output AT keyboard System reset input Battery In
62. ontrol Register Event Mode When this mode is enable Port 0 is latched into the DIO Compare register at 8 33 MHz There is a deglitching circuit inside the DIO circuitry The deglitching requires pulses on Port 0 to be at least 120 nanoseconds in width As long as changes are present longer than that the event is guaranteed to register Pulses as small as 60 nanoseconds can register as an event but they must occur between the rising and falling edge of the 8 33 MHz clock To enter Event mode set bits D 4 3 of the DIO Control register to a 10 Match Mode When this mode is enabled Port 0 is latched into the DIO Compare register at 8 33 MHz There is a deglitching circuit inside the DIO circuitry The deglitching requires pulses on Port 0 to be at least 120 nanoseconds in width As long as changes are present longer than that the match is guaranteed to register Pulses as small as 60 nanoseconds can register as a match but they must occur between the rising and falling edge of the 8 33 MHz clock To enter Match mode set bits D 4 3 of the DIO Control register to 11 Make sure bit 3 is set BEFORE writing the DIO Compare register If you do not set bit 3 first the contents of the DIO Compare register could be lost The reason for this is that Event mode latches in Port 0 into the DIO Compare register at an 8 33 MHz rate CLOCK DIGITAL INPUT IRQ OUT CML147786CX RTD Embedded Technologies Inc 72 Strobe Mode S
63. oot ROM Fail Safe Boot ROM is supplied with the board This feature is programmed into a surface mount flash chip The programmed boot ROM is ROM DOS Fail Safe Boot ROM allows the system to boot without any attached storage devices i e floppy IDE ATA IDE Disk Chip Installing jumper JP5 will force the cpuModule to use fail safe boot ROM as well as load the default BIOS settings This configuration allows you to boot to non volatile onboard ROM DOS CML147786CX RTD Embedded Technologies Inc 11 Cable Kits For maximum flexibility cables are not provided with the cpuModule You may wish to purchase our cable kit for the cpuModule The XK CM43 cable kit contains the following e Utility Board Cable keyboard mouse battery reset speaker SVGA COM ports Multi Function Port IDE Cable for 3 5 Hard Drive IDE Cable for 2 5 Hard Drive 10 100 base T and TX 10 Pin DIL TO RJ 45 Audio Adapter 10 Pin DIL to 3 mini jack connectors Power cable DIL12 to wire leads Dual USB cable CML147786CX RTD Embedded Technologies Inc 12 Connecting Power WARNING If you improperly connect power the module will almost certainly be damaged or destroyed Such damage is not warranted Please verify connections to the module before applying power Power is normally supplied to the cpuModule through the PC 104 bus connectors CN1 and CN2 If you are placing the cpuModule onto a PC 104 stack that has a power supply
64. oots begins execution POST software performs a series of hardware tests sets up the machine as defined in Setup and begins the boot of the OS The second part of the BIOS is known as the CORE BIOS It is the normal interface between cpu Module hardware and the operating system which is in control It is active from the time the OS boots until the cpuModule is turned off The CORE BIOS provides the system with a series of soft ware interrupts to control various hardware devices For more information about the BIOS please see Configuring the cpuModule BIOS Setup on page 55 CML147786CX RTD Embedded Technologies Inc 65 Thermal Throttling The CML147786CX cpuModule supports thermal throttling Thermal throttling allows the CPU to continue operating at a lower clock rate when the CPU core exceeds a temperature limit The power consumption and heat dissipation are therefore lowered reducing the thermal stress on the CPU The CPU will return to its normal speed when the temperature returns to 10C below the throttling threshold Thermal throttling is enabled in the BIOS Setup utility There are three levels 25 50 and 75 which are the percent of full speed that the CPU will operate at when throttled For example with throttling set to 75 a 400 MHz CPU will operate at 300 MHz during excessive temperatures When enabled thermal throttling is started and stopped without any intervention from the operating system or application soft
65. or a Serial port is active at any time You can use Setup to select which one is active or to disable it entirely 2 Only one of the I O addresses shown for the Parallel printer port is active at any time You can use Setup to select which one is active or to disable it entirely 4Tf a PS2 mouse is not connected to the system the I O addresses listed will not be occupied CML147786CX RTD Embedded Technologies Inc 62 Hardware Interrupts If you add any PC 104 modules or other peripherals to the system you must ensure they do not use interrupts needed by the cpuModule or malfunctions will occur The cpuModule supports the standard PC interrupts listed in Table 30 on page 63 Interrupts not in use by hardware on the cpuModule itself are listed as available These interrupts are also assigned by the BIOS to Plug and Play and PCI devices Even if there are no PC 104 Plus modules installed the interrupts will be assigned to on board peripherals such as USB or parallel ports The BIOS can not automatically detect ISA bus PC 104 cards that are using interrupts including aDIO and the Watchdog timer so it may inadvertently assign another resource to an ISA interrupt To prevent this from happening any interrupt that is being used for an ISA resource should be set to Legacy ISA in the BIOS Setup utility under PnP PCI configuration Table 30 Hardware Interrupts Used on the cpuModule incre Pete oo foe _
66. power to the cpuModule You will see a greeting message from the VGA BIOS and then e the cpuModule BIOS version information e a message requesting you press Del to enter the Setup program If you don t press Del the cpuModule will try to boot from the current settings If you press Del the cpuModule will enter Setup Once you have configured the cpuModule using Setup save your changes and reboot By default boards are shipped with fail safe boot ROM en able When Fail Safe Boot ROM is enabled the system will boot to it exclusively CML147786CX RTD Embedded Technologies Inc 19 Booting to Boot Block Flash with Fail Safe Boot ROM The Fail Safe Boot ROM is a special build of ROM DOS located inside a surface mounted Boot Block Flash chip that is memory mapped to the SSD window Boot Block Flash is a write protected flash device that contains the BIOS and extra room where the Fail Safe Boot ROM is stored in the ROM DISK The build is special because it can understand the ROM DISK format on the flash chip Additionally Fail Safe Boot ROM is an emergency interface accessible by an external computer The ROM DISK contains REMDISK and REMSERVE for remote access to the system s disk drives Due to the size of the flash chip Fail Safe Boot ROM contains an abbreviated selection of the ROM DOS utilities however the complete ROM DOS is contained on a CD shipped with the board The purpose of the Fail Safe Boot RO
67. pt Controller To use interrupts you need to know how to read and set the 8259 s interrupt mask reg ister IMR and how to send the end of interrupt EOI command to the 8259 Interrupt Mask Register IMR Each bit in the interrupt mask register IMR contains the mask status of an IRQ line bit 0 is for IRQO bit 1 is for IRQ1 and so on If a bit is set equal to 1 then the corresponding IRQ is masked and it will not generate an interrupt If a bit is clear equal to 0 then the corresponding IRQ is un masked and can generate interrupts The IMR is programmed through port 21H Writing an Interrupt Service Routine The first step in adding interrupts to your software is to write the interrupt service routine ISR This is the routine that will automatically be executed each time an interrupt request occurs on the spec ified IRQ An ISR is different than standard routines that you write First on entrance the processor registers should be pushed onto the stack BEFORE you do anything else Second just before exiting your ISR you must clear the interrupt status flag of the DM5812 and write an end of interrupt com mand to the 8259 controller Finally when exiting the ISR in addition to popping all the registers you pushed on entrance you must use the IRET instruction and not a plain RET The IRET automat ically pops the flags CS and IP that were pushed when the interrupt was called If you find yourself intimidated by interrupt pro
68. put The following table gives the pinout of the Multifunction connector Table 12 Multifunction Connector CN5 RRR SPKR Speaker output open collec oa tor 2 19067 Speaker output 5 volts out 3 ss RESSET Manual push button reset in O a PwRswa Power Standby Switch s keb KeyboardDaa m 7555695 55 7797578 977 a kep Keyboard Power 5 volts fou fs fear Battery input fm 7 _ 7 Facing the connector pins the pinout is C C A A E S Speaker A speaker output is available on pins 1 and 2 of the Multifunction connector These outputs are con trolled by a transistor to supply 0 1 watt of power to an external speaker The external speaker should have 8 ohm impedance and be connected between pins 1 and 2 Keyboard An AT compatible keyboard can be connected to the Multifunction connector Usually PC key boards come with a cable ending with a 5 pin male PS 2 connector The following table lists the re lationship between the Multifunction connector pins and a standard PS 2 keyboard connector CML147786CX RTD Embedded Technologies Inc 35 Table 13 Keyboard Connector Pins on CN5 Pn Sona Function J PSB 5 keD KevyboardDaia e e kec Keyboard Glock s 771975719 77877 _75 5 Vois ja System Reset Pin 3 of the multifunction connector allows connection of an external push button to
69. rallel device less than 3 meters 10 feet Table 9 multiPort Parallel Port Connector Pinout CN6 Signal Function Ste Sobe Daa fon f AFD Autotee PD0 Printer Daa 05B fou f2 ERR Printer Error fm fs por Paraeroa NT initialize printer fou fe Poa ernier Dataa fou fa SLIN Select printer fou 7 pps Printer Daas fou fs GND Signat groun f fe Pba Printer Daaa fom fe GND Signal groun f fo PDs Printer Daas fow 7 GND Signat groun f fa Pos Printer Daas fou fe eno Signa ground e fat Po7 Printer Data 7 mS fou fo eno Signa ground e CK Acknowiede m fo GND Signaigroun f fa Bsv euy m m GND Sionaigrouna j fa PE Paperen m e GND Signal ground f fs SLCT Ready To Receive m fs Rsv Reserved Do Not Connect Pin ee 2 Bo 4 5o al 7 8 s i mo mo 2 n3 ma 05 m6 m9 20 21 22 23 24 _ 25 26 CML147786CX RTD Embedded Technologies Inc 31 11011111701 CN6 aDIO Mode Pin 1 is indicated by a square solder pad on the pin This connector is located on the edge of the cpuModule along the PC 104 bus Table 10 multiPort Advanced Digital I O Connector Pinout CN6 GNEPin Function DB25 77 71777 7 Reserved Do not connect CML147786CX RTD Embedded Technologies Inc 32 multiPort 16 Floppy Controller Mode The MultiPort can be configured to be a floppy drive contr
70. re freshes the watchdog timer WDT_Runtime Pe SSS ED Da WDT_Active WDT_IRQ_Ena WDT_IRQ_Ena WDT_RST_Time a 7 WDT_Active Set this bit to 1 to activate the Watchdog Timer interrupts and resets Set to 0 to disable When disabled the watchdog timer does not need to be refreshed WDT_IRQ Ena Set this bit to 1 to enable the Watchdog interrupt Set to 0 to disable CML147786CX RTD Embedded Technologies Inc 78 WDT_IRQ_ Time Selects the Watchdog Interrupt time based on the following table WDT_IRQ_Time 1 0 Interrupt Time seconds WDT_RST_Time Selects the Watchdog Reset time based on the following table WDT_RST_Time 1 0 Reset Time seconds 67757 CML147786CX RTD Embedded Technologies Inc 79 Multi Color LED The CML147786CX has a Multi Color LED located beside the IDE connector CN9 The color of the LED indicates the status of the board as shown in the table below Table 31 LED Colors On Board IDE Activity Red cpuModule is in reset or approaching thermal limit Yellow Red Green cpuModule is in Standby CPU is throttled if enabled Ethernet Activity The LED can also be controlled manually by writing to I O Port 0x16 The following table lists the color displayed and the value written Table 32 Manual LED Colors Off 7 7777777 CML147786CX RTD Embedded Technologies Inc 80 Real Time Clock
71. re solder pad on the board e Apply power to the system e Re enter the BIOS and set the boot order of the system accordingly CML147786CX RTD Embedded Technologies Inc 42 Bus Mouse Connector 144 The following table gives the pinout of the Bus Mouse connector Table 19 Bus Mouse Connector CN4 Soa Function imon C a E C 7 3 mek mouse Clock 7 40 _ _ Facing the connector pins the pinout is CML147786CX RTD Embedded Technologies Inc 43 USB Connector CN17 Two USB 1 1 compliant ports are available on CN17 The following table gives the pinout of the USB connector Table 20 USB Connector CN17 QPINDPin TOPINDILPin Signa Function mow VCCI Supply 5 150581158 Supply 5 1505821 8 DATA1 Bi directional data line in out for USB1 DATA2 Bi directional data line in out for USB2 DATA1 Bi directional data line in out for USB1 DATA2 Bi directional data line in out for USB2 7 GRD Signal Ground Jow a fenn SignaiGrouns out o fen SignaiGrouns out m fen Signal Ground out Facing the connector pins the pinout is END RND 10 ON FN NI CML147786CX RTD Embedded Technologies Inc 44 10 100 Base T and TX Connector CN20 The functionality of this port is based on the INTEL 82559ER Fast Ethernet PCI controller The following table gives the pinout of CN18 The Ethernet
72. results connect to GND at the signal source LINE_IN_RIGHT Line level input for right channel 1V RMS nominal enD Signal Ground OUTPUT_LEFT Left channel output Select able as line level 1V RMS or headphone o enD Signal Ground ow OUTPUT RIGHT Left channel output Select able as line level 1V RMS or headphone Facing the connector pins the pinout is 9 7 5 3 1 8 6 4 2 10 CML147786CX RTD Embedded Technologies Inc 46 PC 104 Bus 1 1 and 142 Connectors CN1 and CN2 carry signals of the PC 104 bus these signals match definitions of the TEEE 1284 standard The following tables list the pinouts of the PC 104 bus connectors The following table lists the signals of the XT portion of the PC 104 bus see Notes below AT Bus table CML147786CX Table 23 PC 104 XT Bus Connector CN1 RowA Roe C r 57 1554 51545 7o o SS 18585 1558 67165 Keying pin ooo n few 14 ooo oo se o fme woo fsa far SYSCLK IRQ7 DACK2 RTD Embedded Technologies Inc 47 The following table lists signals of the AT portion of the PC 104 bus Table 24 PC 104 AT Bus Connector CN2 7775 1 7 5572 1675 6 465 1 555 27 1655 557 77165877547 677 71 545 _65187557 11758 L 121855
73. s two hard drives will not both drives configured for set one drive for master and the other for work but one does master slave operation consult drive documenta tion floppy does not work data error due to drive up orient drive properly upright or on its side down side CML147786CX RTD Embedded Technologies Inc 99 will not boot when video illegal calls to video controller look for software trying to access non ex card is removed istent video controller for video sound or beep commands COM port will not work in not configured for RS422 485 correctly configure serial port in Setup RS422 or RS485 modes program COM port will not transmit not enabling transmitters control RTS bit of Modem Control Reg in RS422 or RS485 mode ister to enable transmitters see Serial Port descriptions date and time not saved no backup battery connect a backup battery to the Multifunc when power is off tion connector cannot enter BIOS quick boot enabled with no install JP5 reboot and press Del to en hard drives ter setup Text mode fonts look Flat Panel is enabled and at a Switch to CRT only or change Flat Panel strange on a CRT different resolution than cur type rent video mode Screen will not go to ahigh Flat Panel is enabled and at a Switch to CRT only or change Flat Panel er resolution even though different resolution than cur type display supports it rent video mode Interrupts not working for IRQ conflict with PCI
74. s used as a chip select during configuration LOCK Lock indicates an operation that may require multiple transactions to complete Error Reporting PERR Parity Error is for reporting data parity errors SERR System Error is for reporting address parity errors Arbitration REQ Request indicates to the arbitrator that this device desires use of the bus GNT Grant indicates to the requesting device that access has been granted CML147786CX RTD Embedded Technologies Inc 52 System CLK Clock provides timing for all transactions on the PCI bus RST Reset is used to bring PCI specific registers to a known state Interrupts INTA Interrupt A is used to request Interrupts INTB Interrupt B is used to request Interrupts only for multi function devices INTC Interrupt C is used to request Interrupts only for multi function devices INTD Interrupt D is used to request Interrupts only for multi function devices Power Supplies and VIO 5V 5 volt supply connected to PC 104 bus and power connector 5V supplies 12V 12 volt supply connected to PC 104 bus and power connector 12V supplies 12V 12 volt supply connected to PC 104 bus and power connector 12V supplies 3 3V 3 3 volt supply is an on board converter which can deliver up to 2 amps VIO This signal typically is the I O power to the bus drivers on a PCI bus card B1 selects 3 3 or 5 volts to indicate 3 3 or 5 vol
75. sec 0 50 sec 0 25 sec e Watchdog Refresh and Active registers are accessible from Window Fail safe Boot ROM e Surface mount Flash chip that holds ROM DOS e Provides an operating system with nothing else attached ATA IDE Disk Chip Socket e 32 pin ATA IDE Disk Chip Socket supports miniature ATA IDE Flash Disk Chips e Supports capacities up to 4GB e Natively supported by all major operating systems Peripherals Two serial ports software configurable for RS232 422 485 Baud rates from 50 to 115200 baud Parallel port with SPP ECP EPP capability and selectable interrupts and DMA channel PC AT standard keyboard port A PS 2 mouse port PC speaker port Real Time Clock requires user supplied external battery for date and time backup BIOS RTD Enhanced Award BIOS User configurable using built in Setup program Nonvolatile configuration without a battery Can boot from floppy disk hard disk ATA IDE Disk Chip fail safe boot ROM or USB Connections AT bus per PC 104 specifications 64 pin CN1 40 pin CN2 PCI bus per PC 104 Plus specifications 120 pin CN16 Auxiliary Power Connector 12 pin CN3 PS 2 Mouse Connector 4 pin CN4 Multifunction connector 10 pin CNS multiPort connector 26 pin CN6 Serial port 1 connector 10 pin CN7 Serial port 2 connector 10 pin CN8 SVGA Monitor connector 10 pin CN18 TTL Flat Panel connector 30 pin CN19 Dual USB port connector 10 pin CN17 EIDE Hard Drive Connector 44
76. t signaling The default is 3 3 volts No other device except this board should drive the VIO pin CML147786CX RTD Embedded Technologies Inc 53 CML147786CX RTD Embedded Technologies Inc 54 CHAPTER 4 CONFIGURING THE CPUMODULE BIOS SETUP This chapter contains information to configure the cpuModule Topics covered in this chapter include e Disabling Fail Safe Boot ROM Configuring Using the Setup Program CML147786CX RTD Embedded Technologies Inc 55 Disabling Fail Safe Boot ROM e Be sure that JP5 is not installed e Reset the system by either shutting it off and turning it on or by using the reset button e While the system is booting repeatedly press the DEL key to enter the BIOS setup e Choose INTEGRATED PERIPHERALS using the arrow keys and enter e Once in INTEGRATED PERIPHERALS set Fail Safe Boot ROM Disabled CML147786CX RTD Embedded Technologies Inc 56 Quick Boot Description The RTD Enhanced Award BIOS contains a feature called Quick Boot When Quick Boot is enabled the BIOS skips all non essential tests during POST This feature is intended to minimize the amount of time it takes for the system to boot Quick Boot is enabled by default It may be disabled from the BIOS setup However when Quick Boot is disabled it may take a very long time one minute or more for the cpuModule to boot Therefore it is rec ommended to leave Quick Boot enabled for production systems With Quick Boot enabled
77. ted to by the Index To read write an RTC register you must first set the Index register with the register number and then read write the Data register A list of key RTC registers is shown below Table 33 Real Time Clock Registers Register Description Number Hex 02 RTC Minutes 03 RTC Alarm Minutes 04 RTC Hours 05 RTC Alarm Hours CML147786CX RTD Embedded Technologies Inc 81 Table 33 Real Time Clock Registers ef reoweriewe 71 S RTC Status Register A Bit 7 RTC Update In Progress Read Only RTC regis ters should not be accessed when this bit is high Bits 6 4 Divider for 32 768 KHz input should always be 010 Bits 3 0 Rate select for periodic interrupt RTC Status Register B Bit 7 Inhibit Update When high the RTC is prevented from updating Bit 6 Periodic Interrupt Enable When high the RTC IRQ will be asserted by the periodic interrupt Bit 5 Alarm Interrupt Enable When high the RTC IRQ will be asserted when the current time matches the alarm time Bit 4 Update Ended Interrupt Enable When high the RTC IRQ will be asserted every time the RTC updates once per second Bit 3 Square Wave Enable Not used Bit 2 Data Mode Sets the data format of the RTC clock calendar registers O BCD 1 binary This is typically set to BCD mode Bit 1 Hours Byte Format Sets the hour byte to 12 or 24 hour time 0 12 hour 1 24 hour This is typically set to 24 hour mode Bit 0
78. tivated ENDXFR T O This is the only synchronous signal of the PC 104 bus and it is active low It indicates that the current bus cycle must be performed with 0 wait states It is used only for 16 bit boards IOCHCHK I I O Channel Check active low indicates an error condition that cannot be corrected IOCHRDY I T O Channel Ready this line usually high ready is pulled to a low lev el by devices which need longer bus cycles IOCS 16 T O Chip Select 16 bit this line active low is controlled by devices mapped in the I O address space It indicates they have a 16 bit bus width er a Read active low indicates when the devices present on the bus can their information on the data bus T O Write active low When active it allows the peripheral devices to read data present on the data bus IRQx I Interrupt Request x 2 to 15 active on rising edge IRQ15 has top pri ority the other lines have decreasing priority starting from IRQ14 down to IRQ2 An interrupt request is performed by changing the level of the corresponding line from low to high and keeping it high until the micro processor has recognized it KEY N A These locations contain mechanical keying pins to help prevent incor rect connector insertion LA23 LA17 These signals select a 128kbyte window in the 16Mbyte address space available on the bus e During a DMA cycle this active low signal indicates that a resource on the bus is about to drive the data
79. trobe Mode allows the strobe pin of the DIO connector to trigger an interrupt A low to high tran sition on the strobe pin will cause an interrupt request The request will remain high until the Clear Register is read from Additionally the Compare Register latched in the value at Port 0 when the Strobe pin made a low to high transition No further strobes will be available until a read of the Com pare Register is made What this implies is one must read the Compare Register then clear interrupts so that the latched value in the compare register is not lost To enter Strobe mode set bits D 4 3 of the DIO Control register to 01 CML147786CX RTD Embedded Technologies Inc 73 Basic Interrupt Information for Programmers All information below only addresses the DIO on this board Interrupts are connected to IRQs 5 7 10 11 and 12 on the ISA bus PC104 bus and are controlled by two 8259 equivalent interrupt con trollers containing 13 available interrupt request lines Minimum time between two IRQ requests is 125 nanoseconds as set by ISA specification What is an Interrupt An interrupt is a subroutine called asynchronously by external hardware usually an I O device dur ing the execution of another application The CPU halts execution of its current process by saving the system state and next instruction then jumps to the interrupt service routine executes it loads the saved system state and saved next instruction and continues
80. uring an interrupt theoretically can be 4 MB Sec on a 8 MB bus using the INS or MOVS instruction with the REP prefix These instructions are in assembly language Interrupt Request Lines To allow different peripheral devices to generate interrupts on the same computer the PC bus has eight different interrupt request IRQ lines A transition from low to high on one of these lines gen erates an interrupt request which is handled by the PC s interrupt controller The interrupt controller checks to see if interrupts are to be acknowledged from that IRQ and if another interrupt is already in progress it decides if the new request should supersede the one in progress or if it has to wait until the one in progress is done This prioritizing allows an interrupt to be interrupted if the second re quest has a higher priority The priority level is based on the number of the IRQ IRQO has the high est priority IRQ1 is second highest and so on through IRQ7 which has the lowest Many of the IRQs are used by the standard system resources IRQO is used by the system timer IRQ is used by the keyboard IRQ3 by COM2 IRQ4 by COM1 and IRQ6 by the disk drives Therefore it is im portant for you to know which IRQ lines are available in your system for use by the module CML147786CX RTD Embedded Technologies Inc 74 8259 Programmable Interrupt Controller The chip responsible for handling interrupt requests in the PC is the 8259 Programmable Interru
81. ware Because thermal throttling starts before the internal temperature limit of the CPU is reached throt tling may occur within the operating temperature range of the cpuModule When thermal throttling is disabled the CPU will operate at its maximum speed regardless of tem perature CML147786CX RTD Embedded Technologies Inc 66 Direct Hardware Control Some of the cpuModule hardware is controlled directly without using BIOS routines These include Advanced Digital I O aDIO Watchdog Timer Real Time Clock Control Parallel Port Control The following sections describe use of these features CML147786CX RTD Embedded Technologies Inc 67 Advanced Digital I O Ports aDIO This board supports 16 bits of TTL CMOS compatible digital I O TTL signalling plus two strobe inputs Use the BIOS setup to set the multiPort into its aDIO mode These I O lines are grouped into two ports port 0 and port 1 Port 0 is bit direction programmable and Port 1 is byte program mable Port 0 supports RTD s two Advanced Digital Interrupt modes ADI The two modes are match and event Match mode generates an interrupt when an eight bit pattern is received in parallel that matches the match mask register The second ADI mode generates an interrupt when a change occurs on any bit In either mode masking can be used to monitor selected lines When the CPU boots all digital I O line are programmed as inputs What this condition means is the digit
82. you intend to boot from another device you will need to disable Fail Safe Boot ROM See the steps below for the method to disable it e Reset the system by either shutting it off and turning it on or by using the reset button e while the system is booting repeatedly press the DEL key to enter the BIOS setup e Choose INTEGRATED PERIPHERALS using the arrow keys and enter e Once in INTEGRATED PERIPHERALS set Fail Safe Boot ROM Disabled CML147786CX RTD Embedded Technologies Inc 20 If You Misconfigure the couModule It is possible that you may incorrectly configure the cpuModule using Setup If this happens the cor rect procedure is Start Re booting the cpuModule e While the system is re booting repeatedly press the Del key until the cpuModule enters Setup Change the parameters to correctly match your system If the above fails e Insert jumper JP5 This will force the cpuModule to boot using the default configu ration e Boot the cpuModule e Press the Del key to enter Setup or allow the cpuModule to boot to Failsafe CML147786CX RTD Embedded Technologies Inc 21 For More Information This chapter has been intended to get the typical user up and running quickly If you need more de tails please refer to the following chapters for more information on configuring and using the cpu Module CML147786CX 22 Phone 814 234 8087 Fax 814 234 5218 RTD Embedded Technologies Inc 103 Innovatio

CML147786CX cpuModuleTM User`s Manual

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