HD64F38602R Datasheet, PDF (376/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 16 I²C Bus Interface 2 (IIC2)
Slave receive mode
Clear AAS in ICSR
Clear ACKBT in ICIER to 0
Dummy-read ICDRR
Read RDRF in ICSR
No
RDRF = 1?
Yes
Last receive
Yes
- 1?
No
Read ICDRR
[1] Clear the AAS flag.
[1]
[2] Set acknowledge to the transmit device.
[2]
[3] Dummy-read ICDRR.
[3]
[4] Wait for 1 byte to be received.
[5] Check whether it is the (last receive - 1).
[4]
[6] Read the receive data.
[7] Set acknowledge of the last byte.
[5]
[8] Read the (last byte - 1) of receive data.
[9] Wait the last byte to be received.
[6]
[10] Read for the last byte of receive data.
Set ACKBT in ICIER to 1
[7]
Read ICDRR
[8]
Read RDRF in ICSR
No
RDRF = 1?
Yes
Read ICDRR
End
[9]
[10]
For single-byte reception, skip steps [2] to [6] after
step [1]. Then, jump to step [7]. Dummy-read in step [8].
Figure 16.20 Sample Flowchart for Slave Receive Mode
Rev. 3.00 May 15, 2007 Page 344 of 516
REJ09B0152-0300