Motorola MVME712A 用户手册
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
MVME712AM, MVME712-12, and MVME712-13). Each pin connection, signal
mnemonic, and signal characteristic for the connector is listed in
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.
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.
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.
pair.
3
C+
COLLISION + (Input) - a signal to indicate that
multiple stations are contending for access to the
transmission medium.
multiple stations are contending for access to the
transmission medium.
4
T-
TRANSMIT - (Output) - part of a differential
pair.
pair.
5
T+
TRANSMIT + (Output) - this line is intended to
operate into terminated transmission lines.
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