AT&T 3B2/300 Technical Reference Manual page 723

- - - - - - - - - - - - - - - - - Appendix: CONNECTOR AND CABLING INFORMATION
50-PIN CM195AE GPSC INTERFACE CONNECTORS, Jl and J2
PIN DESCRIPTION FUNCTION
01 TRANSMIT DATA BALANCED (TXDB[l]) OUTPUT
02 TRANSMIT DATA BALANCED (TXDB[O])
OUTPUT
03
TRANSMIT DATA UNBALANCED (TXDU[O]) OUTPUT
04 READY TO SEND UNBALANCED (RTSU[l])
OUTPUT
05 READY TO SEND BALANCED (RTSB[l])
OUTPUT
06 READY TO SEND BALANCED (RTSB[O])
OUTPUT
07
DATA TERMINAL READY UNBALANCED (DTRU[l]) OUTPUT
08 INTERFACE CLOCK UNBALANCED (ICKU[OJ)
INPUT
09
DAT A TERMINAL READY BALANCED (DTRB[l]) OUTPUT
10
DATA TERMINAL READY BALANCED (DTRB[OJ) OUTPUT
11
INTERFACE CLOCK BALANCED (ICKB[l]) INPUT
12
INTERFACE CLOCK BALANCED (ICKB[OJ) INPUT
13
RATE SELECT UNBALANCED (RASU[l]) INPUT
14
LOCAL LOOP BACK UNBALANCED (LLBU[l]) INPUT /OUTPUT
15 RECEIVE DATA UNBALANCED (RXDU[O])
INPUT
16
CLEAR TO SEND UNBALANCED (CTSU[l]) INPUT
17
RECEIVE DAT A BALANCED (RXDB[l]) INPUT
18
RECEIVE DAT A BALANCED (RXDB[OJ) INPUT
19 CLEAR TO SEND BALANCED (CTSB[l])
INPUT
20 CLEAR TO SEND BALANCED (CTSB[OJ)
INPUT
21
DATA SET READY UNBALANCED (DSRU[l]) OUTPUT
22
DATA CARRIER DETECT UNBALANCED (DCDU[l]) INPUT
23 DATA SET READY BALANCED (DSRB[l])
OUTPUT
24
DAT A SET READY BALANCED (DSRB[O]) OUTPUT
25
TRANSMIT SIGNAL UNBALANCED (XTCU[O]) OUTPUT
26 GROUND
GROUND
27
DATA CARRIER DETECT BALANCED (DCDB[l]) INPUT
28
DATA CARRIER DETECT BALANCED (DCDB[OJ) INPUT
29
TRANSMIT SIGNAL BALANCED (XTCB[l]) OUTPUT
30
TRANSMIT SIGNAL BALANCED (XTCB[O]) OUTPUT
31
RECEIVE SIGNAL BALANCED (XRCB[l]) INPUT
32
RECEIVE SIGNAL BALANCED (XRCB[OJ) INPUT
33
RING INDICATOR UNBALANCED (RINU[l]) NPUT
34 TIMEOUT (TMOU[l])
INPUT
35
RECEIVE SIGNAL UNBALANCED (XRCU[OJ) INPUT
36
GROUND GROUND
37
GENERAL PURPOSE BIT 1 UNBALANCED/BALANCED (GPlUlBO) INPUT /OUTPUT
38
GENERAL PURPOSE BIT 2 UNBALANCED/BALANCED (GP2U1BO) INPUT /OUTPUT
39 +12V (POS12V) POWER
40 POSITIVE DRIVE POWER (PDRVP) POWER
41 NEGATIVE DRIVE POWER (NDRVP) POWER
42 -12V (NEG12V) POWER
43 +5V VCC POWER
44 NEW SIGNAL (NSUN[l]) NC
45 NOT USED NC
46
NOT USED
NC
47 NOT USED NC
48 NOT USED NC
49
NOT USED
NC
50 NOT USED NC
LEGEND:
NC No Connection
CONNECTOR AND CABLING INFORMATION B-141