HD64F38602R Datasheet, PDF (374/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 16 I²C Bus Interface 2 (IIC2)
Master receive mode
Clear TEND in ICSR
Clear TRS in ICCR1 to 0
Clear TDRE 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
Set ACKBT in ICIER to 1
Set RCVD in ICCR1 to 1
Read ICDRR
Read RDRF in ICSR
No
RDRF = 1?
Yes
Clear STOP in ICSR
Write 0 to BBSY
and SCP
Read STOP in ICSR
No
STOP = 1?
Yes
Read ICDRR
Clear RCVD in ICCR1 to 0
Clear MST in ICCR1 to 0
End
[1] Clear TEND, select master receive mode, and then clear TDRE.*
[2] Set acknowledge to the transmit device.*
[1]
[3] Dummy-read ICDDR.*
[2]
[4] Wait for 1 byte to be received
[5] Check whether it is the (last receive - 1).
[3]
[6] Read the receive data last.
[4]
[7] Set acknowledge of the final byte. Disable continuous reception (RCVD = 1).
[8] Read the (final byte - 1) of receive data.
[9] Wait for the last byte to be receive.
[5]
[10] Clear STOP flag.
[6]
[11] Issue the stop condition.
[12] Wait for the creation of stop condition.
[13] Read the last byte of receive data.
[7]
[14] Clear RCVD.
[8]
[15] Set slave receive mode.
[9]
[10]
[11]
[12]
[13]
[14]
Note: * Do not activate an interrupt during the execution of steps [1] to [3].
[15]
For single-byte reception, skip steps [2] to [6] after step [1]. Then, jump to
step [7]. Dummy-read in step [8].
Figure 16.18 Sample Flowchart for Master Receive Mode
Rev. 3.00 May 15, 2007 Page 342 of 516
REJ09B0152-0300