SMextend 750 User`s Manual
Contents
1. RER 20 Re cm 2I CEF CERF 21e 12 VCC hs R8 O 33 vec F vec Sq 3VSW1 GND 5 R9 O 5 3VSW2 GND Ze SVSWI V R10 0 5VSW2 SSFDC lt Rit oO vecl1 we wee vec R12 0 101 GND GND R13 0 SSFDC CONN OP and CD are optional power pins JP2 vcco Miss JUMPER 7 cl 7 C3 7 C4 JP3 7 CS 7 C6 C2 7 C8 O 1uF O 1uF 0 1uF amp O 1uF O 1uF O 1uF O 1uF JUMPER JP1 5V LED VECO CEF 5 A CLE RE me g ALE JP4 D1 D2 R20 R BE 5 s WEF NAA OP WPF vcco Oo KI gt TD A m0 ADO JUMPER 1N5226 RED LED 110 AD7 EU ADI 3 3V Zener N7 AD6 11e AD2 SOT23 ADS AD3 17 18 ana 19 20 eg vceco 21 22 D3 R19 HEADER 11X2 VW NE Al YELLOW LED 330 Sycard Technology Title SSFDC EXTENDER Size Document Number REV B 140031 A File ORCAD31 SSFDC SSFDC1 S31 Date May 22 1998 Sheet 1 of 12. 0042 00 1998 Sycard Technology Page 4 SMextend 750 User s Manual Appendix A SmartMedia Pin Description Pin Name _ Description Pin Name_ Description _ 4 WEe Write Enable sf 15 D6 jAddress Data Bit6 6 Do fAddress Data Bito 17 LVD_ Low Voltage Detect 8 D2 fAddress Data Bit2 19 R BH Ready Busy 9 D3 fAddress Data Bit3 20 RE Read Enable 1998 Sycard Technology M200042 00 SMextend 750 User s Manual Page 5 B SMextend 750 Schematic M200042 00 1998 Sycard Technology R14 0 R15 0 P1 J1 2 CLE Rte vo CLER 2 CLE TS ALE ALER Troes ALE 3 TEF RIB 9 HERE 7 ALE an 5 WPF l WPR Se WP R17 0 WP ioo LS ADO ADOR Sy eo 7 ADI ADIR 7 101 Rl O 101 8 AD2 AD2R 8 102 9 AD3 AD3R 9 102 103 R2 0 103 cp H 11 op r a I3 AD4 R3 0 AD4R 13 toe 14 ADS AD5R 14 roe 15 AD6 ADER 15 107 LLS AD7 R50 AD7R 16 555 17 LVD LVDR Le LVD LVD op LS OP Re O OPR 18 op R B 2 R BF R BR T9 R E Se 20 REF RDO
3. Figure 2 0 1 The SMextend 750 M200042 00 1998 Sycard Technology Page 2 SMextend 750 User s Manual 2 1 Preparing the SMextend 750 for use As shipped from the factory the SMextend 750 is configured with voltage keys disabled In this condition the SMextend may not be accepted into many SmartMedia sockets The SmartMedia standard defines two voltage keys one for 3 3V and one for 5V 3 3V only cards have a cutout corner adjacent to pin 22 of the connector 5V only cards have a cutout adjacent to pin 12 Cards that can operate at both 3 3V and 5V have both cutouts The following section describes how to configure the SMextend for the desired operating voltage 2 1 1 Removing the voltage key The 3V key should be removed if the card is to be used in a 3 3V host The 5V key should be removed for 5V hosts The voltage key can be removed with a small pair of pliers or a wire cutter The SMextend 750 PCB is scored along the proper cut marks After the user removes the keys it may be necessary to clean the freshly cut edge of the board with a small file Some sockets may not accept the SMextend 750 if these edges are not smooth Note Once removed the voltage keys cannot be reattached 2 2 Using the SMextend Use of the SMextend 750 is fairly straightforward The SMextend is inserted into the host socket with the connector pattern in the correct orientation The SmartMedia card is then inserted with the connector pattern facing down into SMexte
4. P3 Both jumpers must be removed to isolate the power A current meter can be inserted to measure card current consumption Caution Care must be taken to insure that the current measuring device is inserted before turning on power to the host socket Improper power sequencing may cause a damaging latchup condition 1998 Sycard Technology M200042 00 SMextend 750 User s Manual Page 3 2 6 Termination Area An area with SMT resistors is located between the test points and the card connector allows access to all SmartMedia signals A series of surface mount pads allows the user to isolate a signal by cutting a trace The user may also add series resistors to any signal When shipped from the factory the resistor pads are shorted with PCB traces In order to insert series resistor these traces must be cut prior to soldering the resistor to the board Figure 2 3 1 illustrate the termination areas located on the back of the SMextend board Use this guide when making modifications to the board since the silk screen designations may be difficult to read CREEEREN w A E HE E HAY E ES foo lo J la le PIFIEIPIFIEIEIEIE a YR Te IA lo fH fw Figure 2 6 1 Termination Area Solder Side H H p 0 o N Ble B o e Jw po D 20 0 w w H j j H H SJ Joo Joy fon fis Figure 2 6 2 Termination Area Close up M20
5. SYCARD CA LA BZ TECHNOLOGY SMextend 750 SmartMedia Extender User s Manual Preliminary M200042 00 July 1998 Sycard Technology 1180 F Miraloma Way Sunnyvale CA 94086 408 749 0130 408 749 1323 FAX http www sycard com SMextend 750 User s Manual Page 1 1 0 Introduction Sycard Technology s SMextend 750 SmartMedia SSFDC extender card is a debug tool for SmartMedia development and test SMextend offers the following features Supports 3 3 5V or dual voltage hosts Configurable for 3 3V or 5V operation 4 layer construction to insure low noise environment All 22 pins available as test points Signals clearly marked Vcc can be isolated through jumper blocks for current measurements Surface mount resistors can be added to any signal line Vcc LEDs indicate 3 3V or 5V operation Convenient grounding posts for scope probes or other test equipment 2 0 Using the SMextend 750 The SMextend 750 must be configured for 3 3 5 0 or dual voltage operation prior to use Section 2 1 describes the procedure for first time setup Caution Insertion and removal of the extender and SmartMedia card should be done with care The SmartMedia s fragile connectors may be broken or bent if improper force is used Both card and extender should be inserted straight without any lateral movement or force Proper care and use of the extender card will insure years of trouble free operation Sycard Technology SMextend 750
6. nd 750 s socket Caution The SMextend socket is keyed to accept both 3 3V and 5V SmartMedia cards This configuration could allow a 3 3V only card to be plugged into a SV host causing damage to either the card or the host The user should verify compatibility by first trying to inserting the SmartMedia card into the host prior to using the extender card 2 3 Test points All 22 pins of the interface are available to probe through clearly marked headers The headers are standard 0 1 dual row headers with 0 025 posts designed to accept a wide variety of test probes and cable assemblies 2 4 Power Indicators Two LED power indicators display the status of the socket s Vcc The PWR LED indicates that power is applied to the board When both the PWR LED and the 5V LED are lit a Vcc of greater than approximately 3 5V is present When only the PWR LED is lit the Vcc is at a level of less than 3 5V Note The power LEDs are designed to indicate the presence of power on the Vcc supply pins The LEDs do not provide an accurate measurement of Vcc Use a voltmeter to determine the actual operating voltage In some low power applications the current drawn by the power LEDs 10 20mA may cause problems The SMextend is capable of disabling the LED voltage indication by removing the jumper labeled LED EN at JP4 2 5 Current Measurements The Vcc power bus may be isolated from the SmartMedia Card socket through two jumper blocks labeled JP2 and J
Download Pdf Manuals
Related Search