R01UH0823EJ0100 Rev.1.00
Page 1181 of 1823
Jul 31, 2019
RX23W Group
35. I
2
C-bus Interface (RIICa)
Figure 35.39
Timeout Function
TMOH
TMOE
BBSY
IIC
TMOL
Clear internal
counter
Data
2
8
9
A/NA
S
P
1
8
R/W
7
2
9
ACK
7-bit slave address
1
7
TMOS = 0
TMOS = 1
Start internal
counter
Start internal
counter
Clear internal
counter
Start internal
counter
Clear internal
counter
Clear internal
counter
Clear internal
counter
Start internal
counter
Start internal
counter
Start internal
counter
16-bit counter
overflows
14-bit counter
overflows
Write 1 to TMOL bit
Write 0 to TMOE bit
Write 0 to TMOL bit
Write 1 to TMOH bit
Clear internal counter
Start internal counter
[Example of operation when TMOH = 1 and TMOL = 1]
BBSY
TMOF
TMOE
Clear internal
counter
Clear internal
counter
ST
When a stat condition is issued
In the slave-address matched state
[Timeout function]
Bus free time
SCL0
SDA0
SCL0
SDA0