Appendix B - Interface Signals and Connector Pinouts
51
RS232C DB25S CONNECTOR
Receive Clock (RC) —
Transmit Clock (TC) —
13
12
11
10
9 — Test Voltage (+V)
8 — Carrier Detect (CD)
7 — Signal Ground (SG)
6 — Data Set Ready (DSR)
5 — Clear To Send (CTS)
4 — Request To Send (RTS)
3 — Received Data (RD)
2 — Transmit Data (SD)
1
25
24
23
22
21
20
19
18
17
16
15
14
Transmitter Signal —
Element Timing
As viewed from the rear
DESCRIPTION
This connector ties the MT56DSU-R to the DTE. The DB25S
connector has the following pinout configuration.
PIN IDENTIFICATION
Pin Description Signal
2 Transmit Data SD
3 Received Data RD
4 Request To Send RTS
5 Clear To Send CTS
6 Data Set Ready DSR
7 Signal Ground S G
8 Carrier Detect CD
9 Test Voltage +V
15 Transmit Clock TC
17 Receive Clock RC
24 DTE Transmitter Signal Element Timing
82023101.p65 2/12/01, 2:52 PM51
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