
CHAPTER 16 SERIAL INTERFACE IICA
User’s Manual U19780EJ2V0UD
481
(3) Slave device operation (when receiving extension code)
The device is always participating in communication when it receives an extension code.
(a) Start ~ Code ~ Data ~ Data ~ Stop
(i) When WTIM0 = 0
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
ACK
SP
3
4
2
1
1: IICAS0 = 0010×010B
2: IICAS0 = 0010×000B
3: IICAS0 = 0010×000B
4: IICAS0 = 00000001B
Remark
: Always
generated
: Generated only when SPIE0 = 1
×:
Don’t
care
(ii) When WTIM0 = 1
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
ACK
SP
3
4
5
2
1
1: IICAS0 = 0010×010B
2: IICAS0 = 0010×110B
3: IICAS0 = 0010×100B
4: IICAS0 = 0010××00B
5: IICAS0 = 00000001B
Remark
: Always
generated
: Generated only when SPIE0 = 1
×:
Don’t
care