NEC V850/SB1 User Manual page 315

(e) When loss occurs due to stop condition during data transfer
ST AD6 to AD0
L1: IICSn = 1000X110B
∆ 2: IICSn = 01000001B
L: Always generated
Remark
∆: Generated only when SPIEn = 1
X: don't care
Dn = D6 to D0
n = 0, 1
(f) When arbitration loss occurs due to low-level data when attempting to generate a restart condition
When WTIMn = 1
ST AD6 to AD0
L1: IICSn = 1000X110B
L2: IICSn = 1000XX00B
L3: IICSn = 01000100B (Example: when ALDn is read during interrupt servicing)
∆ 4: IICSn = 00000001B
L: Always generated
Remark
∆: Generated only when SPIEn = 1
X: don't care
n = 0, 1
CHAPTER 10 SERIAL INTERFACE FUNCTION
RW AK D7 to Dn
L1
RW AK D7 to D0
L1
User's Manual U13850EJ6V0UD
SP
∆2
STTn = 1
↓
AK D7 to D0 AK D7 to D0
L2 L3
AK SP
∆4
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