
324
CHAPTER 18 SERIAL INTERFACE (IIC0) (
μ
PD780024Y, 780034Y SUBSERIES ONLY)
(5) Arbitration loss operation (operation as slave after arbitration loss)
(a) When arbitration loss occurs during transmission of slave address data
(i)
When WTIM0 = 0
ST
AD6-AD0
RW
AK
D7-D0
AK
D7-D0
AK
SP
1
2
3
4
1 : IICS0 = 0101
×
110B (Example: when ALD0 is read during interrupt servicing)
2 : IICS0 = 0001
×
000B
3 : IICS0 = 0001
×
000B
4 : IICS0 = 00000001B
Remark
: Always generated
: Generated only when SPIE0 = 1
×
: don’t care
(ii) When WTIM0 = 1
ST
AD6-AD0
RW
AK
D7-D0
AK
D7-D0
AK
SP
1
2
3
4
1 : IICS0 = 0101
×
110B (Example: when ALD0 is read during interrupt servicing)
2 : IICS0 = 0001
×
100B
3 : IICS0 = 0001
××
00B
4 : IICS0 = 00000001B
Remark
: Always generated
: Generated only when SPIE0 = 1
×
: don’t care