Hitachi H8S/2378, H8S/2378R Series Hardware Manual page 770

Slave receive mode
SCL
(master output)
SDA
(master output)
SCL
(slave output)
SDA
(slave output)
TDRE
TEND
TRS
ICDRT
ICDRS
ICDRR
User
[2] Write data to ICDRT (data 1),
processing
and clear TDRE.
Figure 16.9 Slave Transmit Mode Operation Timing 1
Rev. 1.0, 09/01, page 726 of 904
Slave transmit mode
9 1 2
Bit 7 Bit 6
A
Data 1
Data 1
3 4 5
Bit 5 Bit 4 Bit 3 Bit 2
[2] Write data to ICDRT (data 2),
and clear TDRE.
6 7 8 9
A
Bit 1 Bit 0
Data 2
Data 2
[2] Write data to ICDRT (data 3),
and clear TDRE.
1
Bit 7
Data 3