APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
AP-A-47
(Rev. 2.00)
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
06c2
I2C_1MOD
(I2C Ch.1 Mode
Register)
15–8 –
0x00
–
R
–
7–3 –
0x00
–
R
2
OADR10
0
H0
R/W
1
GCEN
0
H0
R/W
0
–
0
–
R
0x0020
06c4
I2C_1BR
(I2C Ch.1 Baud-Rate
Register)
15–8 –
0x00
–
R
–
7
–
0
–
R
6–0 BRT[6:0]
0x7f
H0
R/W
0x0020
06c8
I2C_1OADR
(I2C Ch.1 Own
Address Register)
15–10 –
0x00
–
R
–
9–0 OADR[9:0]
0x000
H0
R/W
0x0020
06ca
I2C_1CTL
(I2C Ch.1 Control
Register)
15–8 –
0x00
–
R
–
7–6 –
0x0
–
R
5
MST
0
H0
R/W
4
TXNACK
0
H0/S0
R/W
3
TXSTOP
0
H0/S0
R/W
2
TXSTART
0
H0/S0
R/W
1
SFTRST
0
H0
R/W
0
MODEN
0
H0
R/W
0x0020
06cc
I2C_1TXD
(I2C Ch.1 Transmit
Data Register)
15–8 –
0x00
–
R
–
7–0 TXD[7:0]
0x00
H0
R/W
0x0020
06ce
I2C_1RXD
(I2C Ch.1 Receive
Data Register)
15–8 –
0x00
–
R
–
7–0 RXD[7:0]
0x00
H0
R
0x0020
06d0
I2C_1INTF
(I2C Ch.1 Status
and Interrupt Flag
Register)
15–13 –
0x0
–
R
–
12 SDALOW
0
H0
R
11 SCLLOW
0
H0
R
10 BSY
0
H0/S0
R
9
TR
0
H0
R
8
–
0
–
R
7
BYTEENDIF
0
H0/S0
R/W Cleared by writing 1.
6
GCIF
0
H0/S0
R/W
5
NACKIF
0
H0/S0
R/W
4
STOPIF
0
H0/S0
R/W
3
STARTIF
0
H0/S0
R/W
2
ERRIF
0
H0/S0
R/W
1
RBFIF
0
H0/S0
R
Cleared by reading the
I2C_1RXD register.
0
TBEIF
0
H0/S0
R
Cleared by writing to the
I2C_1TXD register.
0x0020
06d2
I2C_1INTE
(I2C Ch.1 Interrupt
Enable Register)
15–8 –
0x00
–
R
–
7
BYTEENDIE
0
H0
R/W
6
GCIE
0
H0
R/W
5
NACKIE
0
H0
R/W
4
STOPIE
0
H0
R/W
3
STARTIE
0
H0
R/W
2
ERRIE
0
H0
R/W
1
RBFIE
0
H0
R/W
0
TBEIE
0
H0
R/W
0x0020
06d4
I2C_1TBEDMAEN
(I2C Ch.1 Transmit
Buffer Empty DMA
Request Enable
Register)
15–8 –
0x00
–
R
–
7–4 –
0x0
–
R
3–0 TBEDMAEN[3:0]
0x0
H0
R/W
0x0020
06d6
I2C_1RBFDMAEN
(I2C Ch.1 Receive
Buffer Full DMA
Request Enable
Register)
15–8 –
0x00
–
R
–
7–4 –
0x0
–
R
3–0 RBFDMAEN[3:0]
0x0
H0
R/W