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HD64F2149 Datasheet, PDF (934/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer | |||
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SARX1âSecond Slave Address Register 1
SAR1âSlave Address Register 1
SARX0âSecond Slave Address Register 0
SAR0âSlave Address Register 0
SAR
H'FF8E
H'FF8F
H'FFDE
H'FFDF
Bit
Initial value
Read/Write
7
SVA6
0
R/W
6
SVA5
0
R/W
5
SVA4
0
R/W
4
SVA3
0
R/W
3
SVA2
0
R/W
2
SVA1
0
R/W
1
SVA0
0
R/W
IIC1
IIC1
IIC0
IIC0
0
FS
0
R/W
SARX
Slave address
Format select
Bit
7
6
5
4
3
2
1
0
SVAX6 SVAX5 SVAX4 SVAX3 SVAX2 SVAX1 SVAX0 FSX
Initial value
0
0
0
0
0
0
0
1
Read/Write R/W
R/W R/W
R/W R/W R/W
R/W R/W
Format select
DDCSWR
Bit 6
SW
SAR
Bit 0
FS
0
0
1
1
0
1
Second slave address
SARX
Bit 0
FSX
0
1
0
1
0
1
0
1
Operating Mode
I2C bus format
⢠SAR and SARX slave addresses recognized
I2C bus format
⢠SAR slave address recognized
⢠SARX slave address ignored
I2C bus format
⢠SAR slave address ignored
⢠SARX slave address recognized
Synchronous serial format
⢠SAR and SARX slave addresses ignored
Formatless mode (start/stop conditions not
detected)
⢠Acknowledge bit used
Formatless mode*
(start/stop conditions not detected)
⢠No acknowledge bit
Note: * Do not set this mode when automatic switching to the I2C bus format is
performed by means of the DDCSWR setting.
900
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