III PERIPHERAL BLOCK: INPUT/OUTPUT PORTS
I/O Memory of I/O Ports
Table 9.4 shows the control bits of the I/O ports.
Register name
Address
Bit
P0 function
00402D0
D7-6
select register
(B)
D5
D4
D3
D2
D1
D0
P0 I/O port data
00402D1
D7-6
register
(B)
D5
D4
D3
D2
D1
D0
P0 I/O control
00402D2
D7-6
register
(B)
D5
D4
D3
D2
D1
D0
P1 function
00402D4
D7
select register
(B)
D6
D5
D4
D3
D2
D1
D0
P1 I/O port data
00402D5
D7
register
(B)
D6
D5
D4
D3
D2
D1
D0
P1 I/O control
00402D6
D7
register
(B)
D6
D5
D4
D3
D2
D1
D0
B-III-9-6
Table 9.4 Control Bits of I/O Ports
Name
Function
–
Reserved
CFP05
P05 function selection
CFP04
P04 function selection
CFP03
P03 function selection
CFP02
P02 function selection
CFP01
P01 function selection
CFP00
P00 function selection
–
reserved
P05D
P05 I/O port data
P04D
P04 I/O port data
P03D
P03 I/O port data
P02D
P02 I/O port data
P01D
P01 I/O port data
P00D
P00 I/O port data
–
reserved
IOC05
P05 I/O control
IOC04
P04 I/O control
IOC03
P03 I/O control
IOC02
P02 I/O control
IOC01
P01 I/O control
IOC00
P00 I/O control
–
reserved
CFP16
P16 function selection 1
CFP15
P15 function selection 1
CFP14
P14 function selection
CFP13
P13 function selection
CFP12
P12 function selection
CFP11
P11 function selection
CFP10
P10 function selection
–
reserved
P16D
P16 I/O port data
P15D
P15 I/O port data
P14D
P14 I/O port data
P13D
P13 I/O port data
P12D
P12 I/O port data
P11D
P11 I/O port data
P10D
P10 I/O port data
–
reserved
IOC16
P16 I/O control
IOC15
P15 I/O control
IOC14
P14 I/O control
IOC13
P13 I/O control
IOC12
P12 I/O control
IOC11
P11 I/O control
IOC10
P10 I/O control
Setting
–
1 SOUT1
0 P05
1 SIN1
0 P04
1 #SRDY0
0 P03
1 #SCLK0
0 P02
1 SOUT0
0 P01
1 SIN0
0 P00
–
1
High
0
Low
–
1 Output
0 Input
–
1 EXCL5
0 P16
#DMAEND1
1 EXCL4
0 P15
#DMAEND0
1 FOSC1
0 P14
1 EXCL3
0 P13
T8UF3
1 EXCL2
0 P12
T8UF2
1 EXCL1
0 P11
T8UF1
1 EXCL0
0 P10
T8UF0
–
1 High
0 Low
–
1 Output
0 Input
EPSON
Init. R/W
Remarks
–
–
0 when being read.
0
R/W
Extended functions
0
R/W
(0x402DF)
0
R/W
0
R/W
0
R/W
0
R/W
–
–
0 when being read.
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
–
–
0 when being read.
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
–
–
0 when being read.
0
R/W
0
R/W
0
R/W
Extended functions
(0x402DF)
0
R/W
0
R/W
0
R/W
0
R/W
–
–
0 when being read.
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
–
–
0 when being read.
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
S1C33210 FUNCTION PART