M306H7MG-XXXFP Datasheet, PDF (147/329 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

M306H7MG-XXXFP/MC-XXXFP/FGFP
11. MULTI-MASTER I²C BUS INTERFACE
I²C data shift register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
IIC0S0
Address
02E016
When reset
Indeterminate
Bit Symbol
Bit name
Function
RW
D0
Data shift register
D1
This is an 8-bit shift register to store
RW
receive data and write transmit data.
D2
D3
D4
D5
D6
D7
Note: To write data into the I²C data shift register after setting the MST bit to “0” (slave
mode), keep an interval of 8 machine cycles or more.
Figure 11.3 I²C data shift register
I²C transmit buffer register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
IIC0S0S
Address
02E616
When reset
Indeterminate
Bit Symbol
Bit name
Function
RW
S0S0
S0S1
S0S2
Transmit buffer register This is an 8-bit register to write transmit
data to I²C data shift register.
WO
S0S3
S0S4
S0S5
S0S6
S0S7
Figure 11.4 I²C transmit buffer register
Rev.2.10 Oct 25, 2006 Page 147 of 326
REJ03B0152-0210