ADLINK cPCI-3544 - Manual (Page 17)

Introduction
• 11
Compact PCI J2 connector pin assignment in cPCI-3544R module for
RS-422/485 interface. (cPCI-3544R only)
22 GND GA4 GA3 GA2 GA1 GA0 GND
21 GND GND
20 GND GND
19 GND TXD- q TXD+ q GND
18 GND GND
q
D-
q RXD-q
D+
q RXD+q GND
17 GND GND
16 GND GND
15 GND GND
14 GND TXD-
p
TXD+
p
GND
13 GND GND p D- p RXD-p D+ p RXD+p GND
12 GND GND
11 GND GND
10 GND GND
9 GND TXD-
o
TXD+
o
GND
8 GND GND o D- o RXD-o D+ o RXD+o GND
7 GND GND
6 GND GND
5 GND GND
4 GND TXD-
n
TXD+
n
GND
3 GND GND
n
D-
n RXD-n
D+
n RXD+n GND
2 GND GND
1 GND GND
Pin Z A B C D E F
P2
/
J2
C
O
N
N
E
C
T
O
R
nPort A oPort B pPort C qPort D
RS-422
TXD+ : Transmit Data Positive
TXD- : Transmit Data Negative
RXD+ : Receive Data Positive
RXD- : Receive Data Negative
RS-485
D+ : Data Signal Positive
D- : Data Signal Negative