AT&T 3B2/300 Technical Reference Manual page 765

- - - - - - - - - - - - - - - - A p p e n d i x : CONNECTOR AND CABLING INFORMATION
37-PIN CM195T ISC CARD SERIAL PORT CONNECTOR, JOI
PIN
DESCRIPTION
FUNCTION
01 SIGNAL GROUND (J2Pl) GROUND
02
A CHANNEL RECEIVE CLOCK (ARXC)(J2Pl 7)
INPUT
03 A CHANNEL TRANSMIT DATA (ATXD)(J2P2) OUTPUT
04
A CHANNEL TRANSMIT CLOCK INPUT (A TXCI)(J2P15) INPUT
05
A CHANNEL RECEIVE DATA (ARXD)(J2P3) INPUT
06
NOT USED NC
07
A CHANNEL REQUEST TO SEND (ARTS)(J2P4)
OUTPUT
08 NOT USED NC
09
A CHANNEL CLEAR TO SEND (ACTS)(J2P5) INPUT
10 NOT USED NC
11 SIGNAL GROUND (J2P7)
GROUND
12 NOT USED NC
13 A CHANNEL DATA CARRIER DETECT (ADCD)(J2P8) INPUT
14 NOT USED NC
15 A CHANNEL DATA TERMINAL READY (ADTR)(J2P20) OUTPUT
16 A CHANNEL RING INDICATOR (ARI)(J2P22) INPUT
17
A CHANNEL DATA SET READY (ADSR)(J2P6) INPUT
18
A CHANNEL TRANSMIT CLOCK OUTPUT (ATXCO)(J2P24) OUTPUT
19 NOT USED NC
20 NOT USED NC
21
B CHANNEL TRANSMIT DATA (BTXD)(J3P2)
OUTPUT
22 B CHANNEL RECEIVE CLOCK (BRXC)(J3P17) INPUT
23
B CHANNEL RECEIVE DATA (BRXD)(J3P3) INPUT
24 B CHANNEL TRANSMIT CLOCK INPUT(BTXCI)(J3P15) INPUT
25 B CHANNEL REQUEST TO SEND (BRTS)(l3P4) OUTPUT
26 NOT USED NC
27 B CHANNEL CLEAR TO SEND (BCTS)(J3P5) INPUT
28 SIGNAL GROUND (J3Pl) GROUND
29 SIGNAL GROUND GROUND
30
NOT USED NC
31 B CHANNEL DATA CARRIER DETECT (BDCD)(J3P8) INPUT
32 NOT USED NC
33 B CHANNEL DATA TERMINAL READY (BDTR)(J3P20) OUTPUT
34 NOT USED NC
35 B CHANNEL DATA SET READY (BDSR)(J3P6) INPUT
36 B CHANNEL TRANSMIT CLOCK OUTPUT (BTXCO)(J3P24) OUTPUT
37 B CHANNEL RING INDICATOR (BRI)(J3P22 INPUT
LEGEND:
NC No Connection
CONNECTOR AND CABLING INFORMATION B-183