R01UH0823EJ0100 Rev.1.00
Page 1165 of 1823
Jul 31, 2019
RX23W Group
35. I
2
C-bus Interface (RIICa)
Figure 35.25
AASy Flag Set Timing with 10-Bit Address Format Selected
Figure 35.26
AASy Flag Set/Clear Timing with 7-Bit/10-Bit Address Formats Mixed
Read ICDRR register
(Dummy read [lower addresses])
Address match
TDRE
AASy
S
1
1
8
W
1
8
R
9
ACK
TRS
9
ACK
BBSY
TDRE
AASy
TRS
BBSY
RDRF
RDRF
2
3
4
5
6
7
8
9
ACK
S
1
2
3
4
5
Data
Address match
2
3
4
5
6
7
1
1
1
0
1
1
8
W
9
ACK
2
3
4
5
6
7
1
1
1
0
1
1
2
3
4
5
6
7
1
1
1
0
9
ACK
Sr
1 to 8
[10-bit address format: Slave reception]
[10-bit address format: Slave transmission]
10-bit slave address (lower 8 bits)
Upper 2 bits
Read ICDRR register
(Dummy read [lower addresses])
Receive data (lower addresses)
Upper 2 bits
Lower 8 bits
Upper 2 bits
Receive data (lower addresses)
R
SCL0
SDA0
SCL0
SDA0
Upper 2 bits
Address match
AAS1
AAS2
AAS0
BBSY
1
W
1
1
1
0
Lower 8 bits
R/W
Address match
AAS1
AAS2
AAS0
BBSY
Address mismatch
Address match
W
DATA
1
1
1
1
0
R/W
AAS1
AAS2
AAS0
BBSY
S
7-bit slave address (SARL0)
Address mismatch
Address match
DATA
R/W
7-bit slave address (SARL1)
R/W
Address match
Address mismatch
S
9
Sr
2
3
4
5
6
7
1
1 to 8
9
8
3
4
5
6
7
9
8
1
2
S
9
Sr
2
3
4
5
6
7
1
1 to 8
9
8
3
4
5
6
7
9
8
1
2
S
9
Sr
2
3
4
5
6
7
1
1 to 8
9
8
3
4
5
6
7
9
8
1
2
7-bit slave address (SARL1)
Upper 2 bits
7-bit slave address (SARL0)
ACK
ACK
ACK
ACK
ACK
ACK
ACK
[In the case of SARL0: 7-bit address, SARL1: 7-bit address, SAR2: 10-bit address (2)]
[In the case of SARL0: 7-bit address, SARL1: 7-bit address, SAR2: 10-bit address (3)]
[In the case of SARL0: 7-bit address, SARL1: 7-bit address, SAR2: 10-bit address (1)]
ACK
ACK
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0