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FUJITSU MB91460 SERIES FR60 User Manual

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470

Chapter 30 I/O Ports

3.Port Register Settings

P12: The functions of Port 12 are controlled by PFR12 and EPFR12

P12[7:0] is input/output for DMA control signals DEOP, DEOTX, DACKX, DREQ for DMA channels 2 and 3.
Otherwise, the port can be used as general purpose port.

PFR12.7

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

DMA function is DEOP3 output

PFR12.6

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

EPFR12.6 0 - DMA function is DEOTX3 input

1 - DMA function is DEOP3 output

PFR12.5

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

DMA function is DACKX3 output

PFR12.4

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

DMA function is DREQ3 input

PFR12.3

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

DMA function is DEOP2 output

PFR12.2

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

EPFR12.2 0 - DMA function is DEOTX2 input

1 - DMA function is DEOP2 output

PFR12.1

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

DMA function is DACKX2 output

PFR12.0

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

DMA function is DREQ2 input

Addr

7

6

5

4

3

2

1

0

initial

PFR12

0D8Ch

PFR12.7

PFR12.6

PFR12.5

PFR12.4

PFR12.3

PFR12.2

PFR12.1

PFR12.0

0000 0000

EPFR12

0DCCh

-

EPFR12.6

-

-

-

EPFR12.2

-

-

-0-- -0--

R/W

R/W

R/W

R/W

R/W

R/W

R/W

R/W