HD6432633 Datasheet, PDF (857/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

18.1.4 Register Configuration
Table 18-2 summarizes the registers of the I²C bus interface.
Table 18-2 Register Configuration
Channel Name
Abbreviation R/W
Initial Value Address*¹
0
I²C bus control register ICCR0
R/W
H'01
H'FF78*³
I²C bus status register ICSR0
R/W
H'00
H'FF79*³
I²C bus data register
ICDR0
R/W
—
H'FF7E*² *³
I²C bus mode register ICMR0
R/W
H'00
H'FF7F*² *³
Slave address register SAR0
R/W
H'00
H'FF7F*² *³
Second slave address
register
SARX0
R/W
H'01
H'FF7E*² *³
1
I²C bus control register ICCR1
R/W
H'01
H'FF80*³
I²C bus status register ICSR1
R/W
H'00
H'FF81*³
I²C bus data register
ICDR1
R/W
—
H'FF86*² *³
I²C bus mode register ICMR1
R/W
H'00
H'FF87*² *³
Slave address register SAR1
R/W
H'00
H'FF87*² *³
Second slave address
register
SARX1
R/W
H'01
H'FF86*² *³
Common Serial control register X SCRX
R/W
H'00
H'FDB4
DDC switch register
DDCSWR
R/W
H'0F
H'FDB5
Module stop control
register B
MSTPCRB
R/W
H'FF
H'FDE9
Notes: *1 Lower 16 bits of the address.
*2 The register that can be written or read depends on the ICE bit in the I²C bus control
register. The slave address register can be accessed when ICE = 0, and the I²C bus
mode register can be accessed when ICE = 1.
*3 The I²C bus interface registers are assigned to the same addresses as other registers.
Register selection is performed by means of the IICE bit in the serial control register X
(SCRX).
803