Motorola MVME712B - Manual (Page 40)

Interconnect Signals
MVME712A/D3 3-7
3
48 RTS4 REQUEST TO SEND (serial port 4) - RTS is
supplied by the terminal to the modem when it
is required to transmit a message. With RTS off,
the modem carrier remains off. When RTS is
turned on, the modem immediately turns on the
carrier.
49 GND GROUND
50 TRXC4 TRANSMIT CLOCK (serial port 4) - this line can
be conÞgured to clock output data to the
modem from the terminal.
51 DTR4 DATA TERMINAL READY (serial port 4) - a
signal from the terminal to the modem
indicating that the terminal is ready to send or
receive data.
52 CTS4 CLEAR TO SEND (serial port 4) - 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.
53 GND GROUND
54 DCD4 DATA CARRIER DETECT (serial port 4) - sent
by the modem to the terminal to indicate that a
valid carrier is being received.
55 GND GROUND
56 RTXC4 RECEIVE CLOCK (serial port 4) - this line can
be conÞgured to clock input data from a
terminal to a modem.
57 GND GROUND
58 TXD2 TRANSMIT DATA (serial port 2) - data to be
transmitted is furnished on this line to the
modem from the terminal.
59 GND GROUND
60 RXD2 RECEIVE DATA (serial port 2) - data that is
demodulated from the receive line is presented
to the terminal by the modem.
Table 3-4. Connector J2 Interconnect Signals (LCP2 Adapter) (Continued)
Pin
Number
Signal
Mnemonic
Signal Name and Description