User`s manual

SUPPORT INFORMATION
4-4 MPC505EVBUM/D
Table 4-2. RS-232C I/O Connector P2 Pin Assignments
Pin Mnemonic Signal
1 ADCD* DATA CARRIER DETECT – An output signal used to indicate an
acceptable received line (carrier) signal has been detected.
2 ARXD RECEIVE DATA – RS-232C serial input signal.
3 ATXD TRANSMIT – RS-232C serial output signal.
4 ADTR* DATA TERMINAL READY – An output line that indicates an on-line/in-
service/active status.
5 GND GROUND
6 ADSR* DATA SET READY – An output signal (held high) that indicates an on-
line/in-service/active status.
7 ARTS REQUEST TO SEND – An input signal used to request permission to
transfer data.
8 ACTS* CLEAR TO SEND – An output signal that indicates a ready-to-transfer
data status.
9 NC Not Connected