Section 17 I2C Bus Interface 2 (IIC2)
[1] Clear the AAS flag.
Slave transmit mode
Clear AAS in ICSR
[1]
[2]
[2] Set transmit data for ICDRT (except for the last data).
[3] Wait for ICDRT empty.
Write transmit data
in ICDRT
[4] Set the last byte of transmit data.
[5] Wait for the last byte to be transmitted.
[6] Clear the TEND flag .
Read TDRE in ICSR
[3]
[4]
No
TDRE=1 ?
Yes
[7] Set slave receive mode.
Last
byte?
No
[8] Dummy-read ICDRR to release the SCL line.
[9] Clear the TDRE flag.
Yes
Write transmit data
in ICDRT
Read TEND in ICSR
[5]
No
TEND=1 ?
Yes
Clear TEND in ICSR
[6]
[7]
Clear TRS in ICCR1 to 0
Dummy read ICDRR
Clear TDRE in ICSR
[8]
[9]
End
Figure 17.19 Sample Flowchart for Slave Transmit Mode
Rev. 3.00 Sep. 10, 2007 Page 360 of 528
REJ09B0216-0300
RENESAS [ RENESAS TECHNOLOGY CORP ]
