Motorola MVME712-12 User Manual page 40

Table 3-4. Connector J2 Interconnect Signals (LCP2 Adapter) (Continued)
Pin
Number
48 RTS4
49 GND
50 TRXC4
51 DTR4
52 CTS4
53 GND
54 DCD4
55 GND
56 RTXC4
57 GND
58 TXD2
59 GND
60 RXD2
MVME712A/D3
Signal
Mnemonic
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.
GROUND
TRANSMIT CLOCK (serial port 4) - this line can
be conÞgured to clock output data to the
modem from the terminal.
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.
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.
GROUND
DATA CARRIER DETECT (serial port 4) - sent
by the modem to the terminal to indicate that a
valid carrier is being received.
GROUND
RECEIVE CLOCK (serial port 4) - this line can
be conÞgured to clock input data from a
terminal to a modem.
GROUND
TRANSMIT DATA (serial port 2) - data to be
transmitted is furnished on this line to the
modem from the terminal.
GROUND
RECEIVE DATA (serial port 2) - data that is
demodulated from the receive line is presented
to the terminal by the modem.
Interconnect Signals
Signal Name and Description
3
3-7