APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-30
Seiko Epson Corporation
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
48
pin
64
pin
80
pin
100
pin
0x0020
031e
UPMUXP3MUX3
(P36 Universal Port
Multiplexer
Setting Register)
15–13 P37PPFNC[2:0]
0x0
H0
R/W –
– – –
✓
12–11 P37PERICH[1:0]
0x0
H0
R/W
10–8 P37PERISEL[2:0]
0x0
H0
R/W
7–5 P36PPFNC[2:0]
0x0
H0
R/W
– – –
✓
4–3 P36PERICH[1:0]
0x0
H0
R/W
2–0 P36PERISEL[2:0]
0x0
H0
R/W
0x0020 0380–0x0020 0394
UART (UART3) Ch.0
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
0380
UART3_0CLK
(UART3 Ch.0 Clock
Control Register)
15–9 –
0x00
–
R
–
8
DBRUN
0
H0
R/W
7–6 –
0x0
–
R
5–4 CLKDIV[1:0]
0x0
H0
R/W
3–2 –
0x0
–
R
1–0 CLKSRC[1:0]
0x0
H0
R/W
0x0020
0382
UART3_0MOD
(UART3 Ch.0 Mode
Register)
15–13 –
0x00
–
R
–
12 PECAR
0
H0
R/W
11 CAREN
0
H0
R/W
10 BRDIV
0
H0
R/W
9
INVRX
0
H0
R/W
8
INVTX
0
H0
R/W
7
–
0
–
R
6
PUEN
0
H0
R/W
5
OUTMD
0
H0
R/W
4
IRMD
0
H0
R/W
3
CHLN
0
H0
R/W
2
PREN
0
H0
R/W
1
PRMD
0
H0
R/W
0
STPB
0
H0
R/W
0x0020
0384
UART3_0BR
(UART3 Ch.0 Baud-
Rate Register)
15–12 –
0x0
–
R
–
11–8 FMD[3:0]
0x0
H0
R/W
7–0 BRT[7:0]
0x00
H0
R/W
0x0020
0386
UART3_0CTL
(UART3 Ch.0 Control
Register)
15–8 –
0x00
–
R
–
7–2 –
0x00
–
R
1
SFTRST
0
H0
R/W
0
MODEN
0
H0
R/W
0x0020
0388
UART3_0TXD
(UART3 Ch.0 Trans-
mit Data Register)
15–8 –
0x00
–
R
–
7–0 TXD[7:0]
0x00
H0
R/W
0x0020
038a
UART3_0RXD
(UART3 Ch.0 Receive
Data Register)
15–8 –
0x00
–
R
–
7–0 RXD[7:0]
0x00
H0
R
0x0020
038c
UART3_0INTF
(UART3 Ch.0 Status
and Interrupt Flag
Register)
15–10 –
0x00
–
R
–
9
RBSY
0
H0/S0
R
8
TBSY
0
H0/S0
R
7
–
0
–
R
6
TENDIF
0
H0/S0
R/W Cleared by writing 1.
5
FEIF
0
H0/S0
R/W Cleared by writing 1 or read-
ing the UART3_0RXD register.
4
PEIF
0
H0/S0
R/W
3
OEIF
0
H0/S0
R/W Cleared by writing 1.
2
RB2FIF
0
H0/S0
R
Cleared by reading the
UART3_0RXD register.
1
RB1FIF
0
H0/S0
R
0
TBEIF
1
H0/S0
R
Cleared by writing to the
UART3_0TXD register.