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5-24 Computer Group Literature Center Web Site
Transition/Bridge Modules
5
Figure 5-7. EIA-530 DTE Port Configuration (Ports 3 and 4)
Z85230 SCC
Z8536 CIO
DB25
TXD
RTS_
RXD
CTS_
RTXC
TRXC
DSR_
DTR_
LL_
RL_
DCD_
RI_
TM_
+
-
+
-
+
-
+
-
+
-
-V
-V
TXDB
RTSB
RXDB
CTSB
DTRB
ETXCB
TXCB
RXCB
DTRB
LL
RL
DSRB
(R)
TM
GND
TXDA
RTSA
RXDA
CTSA
DTRA
ETXCA
TXCA
RTXCA
DTRA
DSRA
J3/MX
20
15
17
18
21
26
25
7
2
4
3
14
19
16
5
13
10
11
12
17
9
20
23
6
22
8
24
15
+
-
2109 9710
EIA-530-D DTE SIM
J8, J9
3
2
1
+
-
Transition Module
CPX750HATM
CPX750