PCM-2074 EVB User Manual
Revision 1.0 (03-31-06)
USER MANUAL
SMSC PCM-2074
4
Table 2.1 Table of Connectors and LEDs for the PCM-2074 Main Board
DESIGNATOR
SILKSCREEN
DESCRIPTION
CN1
-
14-pin right-angle connector, attaches to CN1 of the RS485 Board via a
flat ribbon cable
CN2
-
Through-holes for mounting a 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
DESCRIPTION
CN1
-
14-pin straight connector, attaches to CN1 of the Main Board via a flat
ribbon cable
CN3, CN4
-
Two Modular RJ-11 jacks, electrically connected. Install 125 ohm
termination resistor across one of these connectors.
D1
PWR
Turns on when power is supplied via CN1
D2
TXEN
Turns on while transmitting.
