HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 553
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
(1036 pages)
- Current page: 553 of 1036
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No
No
No
Clear ACKBT in ICIER to 0
Clear RCVD in ICCR1 to 0
Clear TRS in ICCR1 to 0
Set ACKBT in ICIER to 1
Clear MST in ICCR1 to 0
Set RCVD in ICCR1 to 1
Dummy-read ICDRR
Clear TEND in ICSR
Clear TDRE in ICSR
Read RDRF in ICSR
Read RDRF in ICSR
Clear STOP in ICSR
Read STOP in ICSR
Mater receive mode
Write 0 to BBSY
Read ICDRR
Read ICDRR
Read ICDRR
Last receive
RDRF=1 ?
RDRF=1 ?
STOP=1 ?
and SCP
End
- 1?
Yes
Yes
Yes
Figure 16.19 Sample Flowchart for Master Receive Mode
No
Yes
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10] Clear the STOP flag.
[11] Issue the stop condition.
[12] Wait for the creation of stop condition.
[13] Read the last byte of receive data.
[14] Clear RCVD.
[15] Set slave receive mode.
Note: When the size of receive data is only one byte in reception, steps [2] to [6] are
Clear TEND, select master receive mode, and then clear TDRE.
Set acknowledge to the transmit device.
Dummy-read ICDDR.
Wait for 1 byte to be received
Check whether it is the (last receive - 1).
Read the receive data last.
Set acknowledge of the final byte. Disable continuous reception (RCVD = 1).
Read the (final byte - 1) of received data.
Wait for the last byte to be receive.
skipped after step [1], before jumping to step [7]. The step [8] is dummy-read
in ICDRR.
However, when the size of receive data is two bytes and more, steps [2] to [6]
are not skipped after step [1].
Rev. 4.00 Sep. 14, 2005 Page 503 of 982
Section 16 I
2
C Bus Interface 2 (IIC2)
REJ09B0023-0400
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