FUJITSU MB91460 SERIES FR60 User Manual
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Chapter 30 I/O Ports
3.Port Register Settings
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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