R01UH0823EJ0100 Rev.1.00
Page 1155 of 1823
Jul 31, 2019
RX23W Group
35. I
2
C-bus Interface (RIICa)
Figure 35.14
Master Receive Operation Timing (3) (When RDRFS bit is 0)
9
TDRE
MST
TRS
BBSY
TEND
STOP
ICDRT
ICDRS
2
b6
4
b4
5
b3
6
b2
7
b1
3
b5
8
b0
8
b0
1
b7
7
b1
DATA n-2
SP
DATA n-2
RDRF
ICDRR
DATA n-3
WAIT
ACKBT
ACKBR
[5]
9
DATA n-1
DATA n-1
DATA n-2
0 (ACK)
0 (ACK)
0 (ACK)
Write 1 to
WAIT bit
Read ICDRR
register (DATA n-2)
ACK
ACK
XXXX (last data for transmission
[7-bit add R/Upper 10 bits + R])
Receive data (DATA n-2)
Clear
STOP flag
DATA n-1
Automatic low hold (WAIT)
Read ICDRR register
(last data for reception
[DATA n])
0 (ACK)
DATA n
DATA n
1
2
b6
4
b4
5
b3
6
b2
7
b1
3
b5
8
b0
DATA n
9
NACK
[6]
[7]
P
[9]
1 (NACK)
1 (NACK)
Set WAIT
bit to 0
Write 1
to SP bit
Write 1 to
ACKBT bit
Read ICDRR
register
(DATA n-1)
0
Receive data (DATA n)
b7
Automatic low hold (WAIT)
Receive data (DATA n-1)
SCL0
SDA0