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Chapter 30 I/O Ports
3.Port Register Settings
■ P01: The functions of Port 01 are controlled by PFR01
If the external bus interface is enabled (by mode pins MD[2:0] or mode vector), P01[7:0] is input/output for data
lines D[23:16]. Otherwise, the port can be used as general purpose port.
PFR01.7 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.6 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.5 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.4 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.3 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.2 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.1 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
PFR01.0 0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port).
Addr 7 6 5 4 3 2 1 0 initial
PFR01 0D81h PFR01.7 PFR01.6 PFR01.5 PFR01.4 PFR01.3 PFR01.2 PFR01.1 PFR01.0 1111 1111
EPFR01 0DC1h - - - - - - - - ---- ----
R/W R/W R/W R/W R/W R/W R/W R/W