Intel AIMB-253 - Manual (Page 30)

AIMB-253 User Manual 20
Table 2.6: J2 Pin Definition
Voltage
Select Serial
Port
PIN SIGNAL PIN SIGNAL
Serial
Port Voltage
Select
N/A COM2 1 422 RXD1# 2 422 RXD2# COM3 N/A
3 422 RXD1 4 422 RXD2
5 422 TXD1 6 422 TXD2
7 422 TXD1# 8 422 TXD2#
9 GND 10 GND
JCOMP4
(page 2-
17)
COM4 11 NDCD3# 12 NDCD4# COM5 JCOMP5
(page 2-
17)
13 NSIN3 14 NSIN4
15 NSOUT3 16 NSOUT4
17 NDTR3 18 NDTR4
19 NDSR3# 20 NDSR4#
21 NRTS3 22 NRTS4
23 NCTS3# 24 NCTS4#
25 0V/5V/12V 26 0V/5V/12V