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FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 30 I/O Ports

3.Port Register Settings

P08: The functions of Port 08 are controlled by PFR08

If the external bus interface is enabled (by mode pins MD[2:0] or mode vector), P08[7:0] is input/output for
external bus control signals RDY, BRQ, BGRNTX, RDX, WRX[3:0]. Otherwise, the port can be used as general
purpose port.

PFR08.7

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is RDY

PFR08.6

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is BRQ

PFR08.5

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is BGRNTX

PFR08.4

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is RDX

PFR08.3

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is WRX3

PFR08.2

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is WRX2

PFR08.1

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is WRX1

PFR08.0

0 - Port is in general purpose port mode.
1 - Port is in external bus mode (if external bus is enabled otherwise general purpose port):

External bus function is WRX0

Addr

7

6

5

4

3

2

1

0

initial

PFR08

0D88h

PFR08.7

PFR08.6

PFR08.5

PFR08.4

PFR08.3

PFR08.2

PFR08.1

PFR08.0

1111 1111

EPFR08

0DC8h

-

-

-

-

-

-

-

-

---- ----

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W