J7 - J10 Connectors; Table 3-9. Connectors J7 - J10 Interconnect Signals - Motorola MVME712M Installation And Use Manual

J7 - J10 Connectors

Connectors J7 through J10 are EIA-232-D 25-pin front panel
connectors, labeled
SERIAL PORT 3
mnemonic, and signal characteristic for the serial port connectors is
listed in Table 3-9.

Table 3-9. Connectors J7 - J10 Interconnect Signals

Signal
Pin Number
Mnemonic
1
2 ETXD
3 ERXD
4 RTS
5 ECTS
6 EDSR
7 GND
8 EDCD
9-14
15 ERTXC4
SERIAL PORT1/CONSOLE
, and . Each pin connection, signal
SERIAL PORT 4
Signal Name and Description
Not used.
TRANSMIT DATA - data to be transmitted is furnished
on this line to the modem from the terminal.
RECEIVE DATA - data that is demodulated from the
receive line is presented to the terminal by the modem.
Not used.
CLEAR TO SEND - CTS is a function supplied to the
terminal by the modem, and indicates that it is
permissible to begin transmission of a message. When
using a modem, CTS follows the off-to-on transition of
RTS after a time delay.
DATA SET READY - DSR is a function supplied by the
modem to the terminal to indicate that the modem is
ready to transmit data.
SIGNAL GROUND - Common return line connected to
the MVMExxxx ground plane. Not connected to chassis
ground.
DATA CARRIER DETECT - Sent by the modem to the
terminal to indicate that a valid carrier is being
received. Not used by port 1 (J7).
Not used.
TRANSMIT CLOCK (port 4 only) - This line can be
configured to clock output data to the modem from the
terminal.
MVME712M Transition Module
,
SERIAL PORT2/TTY01
,
3
3-21