ADLINK cPCI-3544 User 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