Host Computer Connector P4 Pin Assignments - Motorola MPC505EVB User Manual

SUPPORT INFORMATION
Table 4-4. Host Computer Connector P4 Pin Assignments
Pin Mnemonic
1 NC
2 CTXD
3 CRXD
4 CRTS
5 CCTS*
6 ADSR*
7 GND
8 CDCD*
9 - 19 NC
20 ADTR*
21 - 25 NC
4-6
Not Connected
TRANSMIT – RS-232C serial output signal.
RECEIVE DATA – RS-232C serial input signal.
REQUEST TO SEND – An input signal used to request permission to
transfer data.
CLEAR TO SEND – An output signal that indicates a ready-to-transfer
data status.
DATA SET READY – An output signal (held high) that indicates an on-
line/in-service/active status.
GROUND
DATA CARRIER DETECT – An output signal used to indicate an
acceptable received line (carrier) signal has been detected.
Not Connected
DATA TERMINAL READY – An output line that indicates an on-line/in-
service/active status.
Not Connected
Signal
MPC505EVBUM/D