Motorola MVME712-12 User Manual page 51

Support Information
Table 3-12. Connector P2, J11 Interconnect Signals (MVME712 x ) (Continued)
Pin Number
P2
3
A16
C17
A17
C18
A18
C19
A19
C20
A20,C21
A21
C22
A22
C23
3-18 MVME712-12/-13/A/AM/B Transition Modules and LCP2 Adapter Board UserÕs Manual
Signal
Mnemonic
J11
32 RTS3
33 DCD3
34 DTR3
35 TXD1
36 GND
37 RXD1
38 GND
39 RTS1
40,41 GND
42 CTS1
43 GND
44 TXD4
45 GND
Signal Name and Description
REQUEST TO SEND (serial port 3) - 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.
DATA CARRIER DETECT (serial port 3) - sent by the
modem to the terminal to indicate that a valid carrier
is being received.
DATA TERMINAL READY (serial port 3) - a signal
from the terminal to the modem indicating that the
terminal is ready to send or receive data.
TRANSMIT DATA (serial port 1) - data to be
transmitted is furnished on this line to the modem
from the terminal.
GROUND
RECEIVE DATA (serial port 1) - data that is
demodulated from the receive line is presented to the
terminal by the modem.
GROUND
REQUEST TO SEND (serial port 1) - 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
CLEAR TO SEND (serial port 1) - 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
TRANSMIT DATA (serial port 4) - data to be
transmitted is furnished on this line to the modem
from the terminal.
GROUND