Pin Assignments
D-5
3166-A2-GB20-20
March 1999
Table D-3.
RS449
Cable Interface
Signal
Circuit
Mnemonic
CCITT
Number
Direction
Pin
Shield
—
—
—
1
Signal Ground
SG
102A
—
19
Receive Ground
RC
102B
—
20
Send Common
SC
—
—
37
Send Data
SD
103
To DSU/CSU
4 (A)
22 (B)
Receive Data
RD
104
From
DSU/CSU
6 (A)
24 (B)
Request-to-Send
RS
105
To DSU/CSU
7 (A)
25 (B)
Clear-to-Send
CS
106
From
DSU/CSU
9 (A)
27 (B)
Receiver Ready
RR
109
From
DSU/CSU
13 (A)
31 (B)
Data Mode
DM
107
From
DSU/CSU
11 (A)
29 (B)
Terminal Ready
TR
108/1, /2
To DSU/CSU
12 (A)
30 (B)
Terminal Timing
TT
113
To DSU/CSU
17 (A)
35 (B)
Send Timing
ST
114
From
DSU/CSU
5 (A)
23 (B)
Receive Timing
RT
115
From
DSU/CSU
8 (A)
26 (B)
Local Loopback
LL
141
To DSU/CSU
10
Remote Loopback
RL
140
To DSU/CSU
14
Test Mode
TM
142
From
DSU/CSU
18
Summary of Contents for 3166 CSU
Page 1: ...ACCULINK 3166 DSU CSU USER S GUIDE Document No 3166 A2 GB20 20 March 1999...
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Page 140: ...Pin Assignments D 12 3166 A2 GB20 20 March 1999 This page intentionally left blank...
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