EMAC PPC-E4+, User Manual

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PPC-E4+ User Manual.doc -7-
Rev 1.4 © 2015 EMAC, Inc.
Table 3
SODIMM Pin#
SoM Pin Name Processor Pin Name(s)
Function
109 COMC_RTS RTS2/PC9 RS422/485 Tx Enable
118 GPIO4 ISI_D3/PB23 ~RS232 Shutdown
119 GPIO5 ISI_D4/PB24 ~RS422/485 Rx Enable
120 GPIO6 ISI_D5/PB25 ~RS232 Enable
Table 4 (COM A Pinout) (HDR4)
#
Pin Description for 10-
Pin Header Pin Description for DB9
Connector
1 DCD DCD
2 DSR RxD
3 RxD TxD
4 RTS DTR
5 TxD GND
6 CTS DSR
7 DTR RTS
8 RI CTS
9 GND RI
10 NC -
Table 5 (COM B Pinout) (HDR3)
#
Pin Description for 10-
Pin Header Pin Description for DB9
Connector
1 NC NC
2 NC RxD
3 RxD TxD
4 RTS NC
5 TxD GND
6 CTS NC
7 NC RTS
8 NC CTS
9 GND NC
10 NC -
Table 6 (COM C Pinout) (HDR2)
#
Pin Description for 10-Pin
Header Pin Description for DB9
Connector
1 422/485 TX- 422/485 TX-
2 NC 232 RX, 422/485 TX+
3 232 RX, 422/485 TX+ 232 TX, 422/485 RX+
4 RTS 422/485 RX-
5 232 TX, 422/485 RX+ GND
6 CTS NC
7 422/485 RX- RTS
8 NC CTS
9 GND NC
10 NC -