Renesas RX100 Series User Manual page 779

RX13T Group
[Device-ID reception]
S 1
SCL0
SDA0
1
BBSY
AASy
DID
TRS
TDRE
RDRF
[When address received after a restart condition is detected does not match the device-ID ]
S 1
SCL0
SDA0
1
BBSY
AASy
DID
RDRF
[When address before the device-ID + R does not match the slave address]
S 1
SCL0
SDA0
1
BBSY
AASy
DID
TDRE
RDRF
Figure 24.28 AASy/DID Flag Set/Clear Timing during Reception of Device-ID
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
2 3 4 5 6 7 8
1 1 1 1 0 0 W
Device-ID match (1111 100b + W)
2 3 4 5 6 7 8
1 1 1 1 0 0 W
Receive data (7-bit address/lower 10 bits)
Device-ID match (1111 100b + W)
2 3 4 5 6 7 8
1 1 1 1 0 0 R
Device-ID match (1111 100b + R)
The previous value is retained.
9 1 to 8 9 Sr 1
ACK Address ACK 1
Slave address match
Receive data (7-bit address/lower 10 bits)
Read ICDRR register
(Dummy read [7-bit address/lower 10 bits])
to
9 1 8 9 Sr 1
Address
ACK ACK
Slave address match
Read ICDRR register
(Dummy read [7-bit address/lower 10 bits])
to
9 1 8 9 Sr 1
NACK NACK 1
Comparing the second and the following
bytes is stopped.
2
24. I C-bus Interface (RIICa)
2 3 4 5 6 7 8
1 1 1 1 0 0 R
Device-ID match (1111 100b + R)
2 3 4 5 6 7 8
7-bit slave address (other station)
R/W
Slave address mismatch
Device-ID mismatch
2 3 4 5 6 7 8
1 1 1 1 0 0 R
Device-ID match (1111 100b + R)
Page 779 of 1041
9
ACK
9
ACK
9
NACK