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FUJITSU MB91460 SERIES FR60 User Manual

Page 499

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Chapter 30 I/O Ports

3.Port Register Settings

P23: The functions of Port 23 are controlled by PFR23

P23[7:0] is input/output for CAN serial communication signals TX, RX of channels 0 to 3, and External Interrupt
Triggers INT[11:8]. Otherwise, the port can be used as general purpose port.

PFR23.7

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is TX3 output

PFR23.6

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is RX3 input, and INT11 input

Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this

the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR1.EN11 set to ‘1’.

PFR23.5

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is TX2 output

PFR23.4

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is RX2 input, and INT10 input

Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this

the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR1.EN10 set to ‘1’.

PFR23.3

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is TX1 output

PFR23.2

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is RX1 input, and INT9 input

Remark: This pin supports external interrupt wake up from STOP-HIZ mode. Because of this

the internal input line is not forced to low in STOP-HIZ mode if the PFR is set to ‘1’ and
interrupt is enabled with ENIR1.EN9 set to ‘1’.

PFR23.1

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Resource function is TX0 output

PFR23.0

0 - Port is in general purpose port mode.
1 - Port is in resource function mode:

Addr

7

6

5

4

3

2

1

0

initial

PFR23

0D97h

PFR23.7

PFR23.6

PFR23.5

PFR23.4

PFR23.3

PFR23.2

PFR23.1

PFR23.0

0000 0000

EPFR23

0DD7h

-

-

-

-

-

-

-

-

---- ----

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W