RX610 Group
22. I
2
C Bus Interface (RIIC)
R01UH0032EJ0120 Rev.1.20
Page 756 of 1006
Feb 20, 2013
RDRF
Read ICDRR
RDRF
SCLn
SDAn
SCLn
SDAn
Data
Automatic low-hold (WAIT)
Automatic low-hold (WAIT)
ACK
Data
Data
[RDRFS = 0, WAIT = 0]
Read ICDRR
Read ICDRR
Read ICDRR
[RDRFS = 0, WAIT = 1]
Automatic low-hold
(WAIT)
Data
Data
ACK
Data
Read ICDRR
Read ICDRR
Automatic low-hold
(to prevent failure to
receive data)
Automatic low-hold
(RDRFS)
Automatic low-hold (RDRFS)
[RDRFS = 1, WAIT = 0]
[RDRFS = 1, WAIT = 1]
Write 0 to ACKBT
Read ICDRR Read ICDRR
Write 0 to ACKBT
ACK
Data
ACK
Data
ACK
Automatic low-hold
(RDRFS)
Automatic low-hold (WAIT)
Automatic low-hold
(RDRFS)
Write 0 to ACKBT
Read ICDRR
Read ICDRR Write 0 to ACKBT
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Automatic low-hold
(to prevent failure to receive data )
ACK
ACK
ACK
ACK
RDRF
SCLn
SDAn
ACKBT
SCLn
RDRF
SDAn
ACKBT
Data
ACK
Figure 22.31 Automatic Low-Hold Operation in Receive Mode (Using RDRFS and WAIT Bits)
Summary of Contents for RX600 Series
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