APPENDIX A LIST OF PERIPHERAL CIRCUIT CONTROL REGISTERS
AP-A-48
Seiko Epson Corporation
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
0x0020 06e0–0x0020 06f6
I
2
C (I2C) Ch.2
Address
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
0x0020
06e0
I2C_2CLK
(I2C Ch.2 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
06e2
I2C_2MOD
(I2C Ch.2 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
06e4
I2C_2BR
(I2C Ch.2 Baud-Rate
Register)
15–8 –
0x00
–
R
–
7
–
0
–
R
6–0 BRT[6:0]
0x7f
H0
R/W
0x0020
06e8
I2C_2OADR
(I2C Ch.2 Own
Address Register)
15–10 –
0x00
–
R
–
9–0 OADR[9:0]
0x000
H0
R/W
0x0020
06ea
I2C_2CTL
(I2C Ch.2 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
06ec
I2C_2TXD
(I2C Ch.2 Transmit
Data Register)
15–8 –
0x00
–
R
–
7–0 TXD[7:0]
0x00
H0
R/W
0x0020
06ee
I2C_2RXD
(I2C Ch.2 Receive
Data Register)
15–8 –
0x00
–
R
–
7–0 RXD[7:0]
0x00
H0
R
0x0020
06f0
I2C_2INTF
(I2C Ch.2 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_2RXD register.
0
TBEIF
0
H0/S0
R
Cleared by writing to the
I2C_2TXD register.
0x0020
06f2
I2C_2INTE
(I2C Ch.2 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