Motorola MVME712A/D3 用户手册
Support Information
3-14
MVME712-12/-13/A/AM/B Transition Modules and LCP2 Adapter Board UserÕs Manual
3
Connector J6 Interconnect Signals (MVME712-13, MVME712AM)
Connector J6 is the modem RING and TIP from the Telco front panel jack on
the MVME712-13 and MVME712AM. Each pin connection, signal mnemonic,
and signal characteristic for the connector is listed in
the MVME712-13 and MVME712AM. Each pin connection, signal mnemonic,
and signal characteristic for the connector is listed in
.
Connector J7 Interconnect Signals (MVME712-13, MVME712AM)
Connector J7 is the onboard modem interconnect (refer to Appendix A for
details on the modem). Each pin connection, signal mnemonic, and signal
characteristic for the connector is listed in
details on the modem). Each pin connection, signal mnemonic, and signal
characteristic for the connector is listed in
Table 3-9. Connector J6 Interconnect Signals (MVME712-13/AM)
Pin
Number
Signal
Mnemonic
Signal Name and Description
1
TIP
Tip side of telephone line.
2
RING
Ring side of telephone line.
Table 3-10. Connector J7 Interconnect Signals (MVME712-13/AM)
Pin
Number
Signal
Mnemonic
Signal Name and Description
1
MDMTXD2
TRANSMIT DATA - data to be transmitted is
furnished on this line to the modem from the
terminal.
furnished on this line to the modem from the
terminal.
2,3
Not used.
4
-12VMODEM
-12 Vdc Power - used by the modem.
5
+5VMODEM
+5 Vdc Power - used by the modem.
6
Not used.
7
MDMDTR2
DATA TERMINAL READY - an active low
signal from the terminal to the modem
indicating that the terminal is ready to send or
receive data.
signal from the terminal to the modem
indicating that the terminal is ready to send or
receive data.
8,9
Not used.
10
GND
GROUND - modem circuit ground interface.
11
MDMCTS2
CLEAR TO SEND - an active low signal that the
modem maintains in the on state.
modem maintains in the on state.
12
Not used.