APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
AP-A-25
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
0x0020
029e
P9FNCSEL
(P9 Port Function
Select Register)
15–12 –
0x0
H0
R/W –
– – – –
11–10 P95MUX[1:0]
0x0
H0
R/W –
✓
✓
✓
✓
9–8 P94MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
7–6 P93MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
5–4 P92MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
3–2 P91MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
1–0 P90MUX[1:0]
0x0
H0
R/W
✓
✓
✓
✓
0x0020
02a0
PADAT
(Pa Port Data
Register)
15 –
0
–
R
–
– – – –
14 PAOUT6
0
H0
R/W –
– – –
✓
13 PAOUT5
0
H0
R/W
– – –
✓
12 PAOUT4
0
H0
R/W
– –
✓
✓
11 PAOUT3
0
H0
R/W
✓
✓
✓
✓
10 PAOUT2
0
H0
R/W
–
✓
✓
✓
9
PAOUT1
0
H0
R/W
–
✓
✓
✓
8
PAOUT0
0
H0
R/W
– –
✓
✓
7
–
0
–
R
–
– – – –
6
PAIN6
0
H0
R
–
– – –
✓
5
PAIN5
0
H0
R
– – –
✓
4
PAIN4
0
H0
R
– –
✓
✓
3
PAIN3
0
H0
R
✓
✓
✓
✓
2
PAIN2
0
H0
R
–
✓
✓
✓
1
PAIN1
0
H0
R
–
✓
✓
✓
0
PAIN0
0
H0
R
– –
✓
✓
0x0020
02a2
PAIOEN
(Pa Port Enable
Register)
15 –
0
–
R
–
– – – –
14 PAIEN6
0
H0
R/W –
– – –
✓
13 PAIEN5
0
H0
R/W
– – –
✓
12 PAIEN4
0
H0
R/W
– –
✓
✓
11 PAIEN3
0
H0
R/W
✓
✓
✓
✓
10 PAIEN2
0
H0
R/W
–
✓
✓
✓
9
PAIEN1
0
H0
R/W
–
✓
✓
✓
8
PAIEN0
0
H0
R/W
– –
✓
✓
7
–
0
–
R
–
– – – –
6
PAOEN6
0
H0
R/W –
– – –
✓
5
PAOEN5
0
H0
R/W
– – –
✓
4
PAOEN4
0
H0
R/W
– –
✓
✓
3
PAOEN3
0
H0
R/W
✓
✓
✓
✓
2
PAOEN2
0
H0
R/W
–
✓
✓
✓
1
PAOEN1
0
H0
R/W
–
✓
✓
✓
0
PAOEN0
0
H0
R/W
– –
✓
✓
0x0020
02a4
PARCTL
(Pa Port Pull-up/down
Control Register)
15 –
0
–
R
–
– – – –
14 PAPDPU6
0
H0
R/W –
– – –
✓
13 PAPDPU5
0
H0
R/W
– – –
✓
12 PAPDPU4
0
H0
R/W
– –
✓
✓
11 PAPDPU3
0
H0
R/W
✓
✓
✓
✓
10 PAPDPU2
0
H0
R/W
–
✓
✓
✓
9
PAPDPU1
0
H0
R/W
–
✓
✓
✓
8
PAPDPU0
0
H0
R/W
– –
✓
✓
7
–
0
–
R
–
– – – –
6
PAREN6
0
H0
R/W –
– – –
✓
5
PAREN5
0
H0
R/W
– – –
✓
4
PAREN4
0
H0
R/W
– –
✓
✓
3
PAREN3
0
H0
R/W
✓
✓
✓
✓
2
PAREN2
0
H0
R/W
–
✓
✓
✓
1
PAREN1
0
H0
R/W
–
✓
✓
✓
0
PAREN0
0
H0
R/W
– –
✓
✓