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SMSC PCM-2074

USER MANUAL

Revision 1.0 (03-31-06)

PCM-2074 EVB User Manual

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Summary of Contents for PCM-2074

Page 1: ...SMSC PCM 2074 USER MANUAL Revision 1 0 03 31 06 PCM 2074 EVB User Manual...

Page 2: ...configured to operate in peripheral mode Type II PCMCIA interface using ZiLOG Z1601720ASC One socket for GPIO connectors Note The PCMCIA connection does not support CardBus or ExpressCardTM It also do...

Page 3: ...nual SMSC PCM 2074 USER MANUAL Revision 1 0 03 31 06 3 2 Connectors and LEDs The photograph below shows important features of the Main Board of the PCM 2074 Figure 2 1 The PCM 2074 Main Board CN1 CN3...

Page 4: ...connector for the GPIO signals D3 CS LED turns on when the host card is accessed via the PCMCIA interface Table 2 2 Table of Connectors and LEDs for the PCM 2074 RS485 Board DESIGNATOR SILKSCREEN DESC...

Page 5: ...uration Jumper Settings The illustrations below shows the location of jumpers and switches on the two boards Note CN2 and SW1 on the Main Board are not populated Figure 3 1 Location of Jumpers and Swi...

Page 6: ...us Width 8 16 8 5 WPRE1 Warning Timer 1 Bit 1 MSB Refer to TMC 2074 Datasheet 11b 4 WPRE0 Warning Timer Bit 0 LSB 3 NSTPRE2 NST Resolution Bit 2 MSB Refer to TMC 2074 Datasheet 000b 2 NSTPRE1 NST Reso...

Page 7: ...on the Main Board is shown in Table 4 2 below Table 4 1 Pin Assignments for CN1 Pin No Attribute Name Pin No Attribute Name 1 P VDD 5V 1 2 P VDD 5V 1 3 I nCMIBYP2 4 I nHUBON2 5 O TXEN2 6 P GND 7 I RXI...

Page 8: ...ond reset signal is provided by the Zilog Z1601720ASC PCMCIA interface this signal will reset the TMC2074 when asserted it is also provided to the CN2 connector 6 Monitoring the CMI Decode Signal When...

Page 9: ...h the impedance built into the board Each end of the twisted pair cable should have a 125 ohm termination resistor attached Recommended cables and terminators Single wire type 125 ohm twisted pair cab...

Page 10: ...tors must be connected or disconnected depending on the location Refer to Section 9 3 for more details Figure 9 1 Point to Point Twisted Pair Connection Figure 9 2 Bus Connection for 3 or more Nodes O...

Page 11: ...ation of the offset resistors within a CircLink node depends on how that node is connected within a network The offset resistors should be installed on the end nodes of a network and should be removed...

Page 12: ...For the worst case conditions we assume that VCC min 4 75V that Rt min 124 x 0 95 117 8 and that the threshold margin is 0 05V therefore VTH max 0 25V Putting these together we get Therefore Rl nomin...

Page 13: ...vailable The pin just to the left of the middle is always positive L and the pin just to the right of the middle is always negative L 9 5 Routing to Modular Jack Connectors Figure 9 5 Pin Out of an RJ...

Page 14: ...the PCM 2074 with a Desktop PC To use the PCM 2074 evaluation board in the PCI slot of a desktop PC please use a general purpose conversion adaptor between the PCI slot and the PCM 2074 PCMCIA connect...

Page 15: ...ng the PCM 2074 to exogenous material such as metal particles These may cause short circuits and fire 12 2 PC Installation Procedure 1 Confirm that all jumpers and dip switches on both the Main Board...

Page 16: ...ons Anomaly sheets are available upon request SMSC products are not designed intended authorized or warranted for use in any life support or other application where product failure could cause or cont...

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