Datasheet

Section 16 I
2
C Bus Interface [H8S/2138 Group Option]
Rev. 4.00 Jun 06, 2006 page 504 of 1004
REJ09B0301-0400
Slave transmit mode
Write transmit data in ICDR
Read IRIC in ICCR
IRIC = 1?
Clear IRIC in ICCR
Clear IRIC in ICCR
Clear IRIC in ICCR
Read ACKB in ICSR
Set TRS = 0 in ICCR
End
of transmission
(ACKB = 1)?
Yes
No
No
Yes
End
[1]
[2]
[3]
Read ICDR
[5]
[4]
[1] Set transmit data for the second and
subsequent bytes.
[2] Wait for 1 byte to be transmitted.
[3] Test for end of transfer.
[4] Select slave receive mode.
[5] Dummy read (to release the SCL line).
Figure 16.17 Flowchart for Slave Transmit Mode (Example)