Motorola MVME712B - Manual (Page 52)

Interconnect Signals
MVME712A/D3 3-19
3
A23 46 RXD4 RECEIVE DATA (serial port 4) - data that is
demodulated from the receive line is presented to the
terminal by the modem.
C24 47 GND GROUND
A24 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.
C25 49 GND GROUND
A25 50 Not used.
C26 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.
A26 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.
C27 53 GND GROUND
A27 54 DCD4 DATA CARRIER DETECT (serial port 4) - sent by the
modem to the terminal to indicate that a valid carrier
is being received.
C28 55 GND GROUND
A28 56 Not used.
C29 57 GND GROUND
A29 58 TXD2 TRANSMIT DATA (serial port 2) - data to be
transmitted is furnished on this line to the modem
from the terminal.
C30 59 GND GROUND
A30 60 RXD2 RECEIVE DATA (serial port 2) - data that is
demodulated from the receive line is presented to the
terminal by the modem.
Table 3-12. Connector P2, J11 Interconnect Signals (MVME712 x) (Continued)
Pin Number
Signal
Mnemonic
Signal Name and Description
P2 J11