Motorola MVME712B - Manual (Page 48)

Interconnect Signals
MVME712A/D3 3-15
3
Connector J10 Interconnect Signals (MVME712 x )
Connector J10 is the Ethernet interconnect on the MVME712x (MVME712A,
MVME712AM, MVME712-12, and MVME712-13). Each pin connection, signal
mnemonic, and signal characteristic for the connector is listed in
Table 3-11 .
13 +12VMODEM +12 Vdc Power - used by the modem.
14 +5VMODEM +5 Vdc Power - used by the modem.
15 MDMRXD2 RECEIVE DATA - data that is demodulated
from the receive line is presented to the terminal
by the modem.
16 Not used.
17 MDMDCD2 DATA CARRIER DETECT - sent by the modem
to the terminal to indicate that a valid carrier is
being received.
18 GND GROUND - modem circuit ground interface.
19 +5VMODEM +5 Vdc Power - used by the modem.
20 GND GROUND - modem circuit ground interface.
Table 3-11. Connector J10 Interconnect Signals (MVME712 x)
Pin
Number
Signal
Mnemonic
Signal Name and Description
1 Not used.
2 C- COLLISION - (Output) - part of a differential
pair.
3 C+ COLLISION + (Input) - a signal to indicate that
multiple stations are contending for access to the
transmission medium.
4 T- TRANSMIT - (Output) - part of a differential
pair.
5 T+ TRANSMIT + (Output) - this line is intended to
operate into terminated transmission lines.
6,7 Not used.
8 R- RECEIVE - (Input) - part of a differential pair.
Table 3-10. Connector J7 Interconnect Signals (MVME712-13/AM) (Continued)
Pin
Number
Signal
Mnemonic
Signal Name and Description