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Integrator’s Reference Manual
7-10 80-99208-1 Rev. D
Table 7-1. Interface Connector Pinouts
Pin
Number
Signal Name Signal
Level
Direction
User <-> Modem
Description
1 Chassis
Ground
- Chassis Ground Isolated chassis ground
2 DP_TXD RS-232 DTE -> DCE Data port TXD
3 DP_RXD RS-232 DTE <- DCE Data port RXD
4 DP_RTS RS-232 DTE -> DCE Data port RTS
5 DP_CTS RS-232 DTE <- DCE Data port CTS
6 DP_DSR RS-232 DTE <- DCE This pin is the DSR for the
Data port and is asserted
when the modem detects
activity on the Data port
and is ready to
communicate with the
DTE over this port. This
signal is de-asserted when
the modem detects no
activity on the Data port;
or is de-asserted as an
acknowledgment to the
user, indicating that the
modem has completed its
power- down sequence
after the DTR lines of all
serial ports have
de-asserted.
7 Ground Ground Ground return Ground return
8 DP_DCD RS-232 DTE <- DCE Data port DCD
9 DC_POWER 5.6V-16V Modem power
10 DC_POWER 5.6V-16V Modem power
11 Ground Ground Ground return Ground return
12 CP_DTR RS-232 DTE -> DCE Control port DTR
13 Reserved Reserved Reserved
14 CP_TXD RS-232 DTE -> DCE Control port TXD