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2
Section 17 I
C Bus Interface (IIC)
Bit
Bit Name
5
ICDRF
Rev. 1.00 May 09, 2008 Page 518 of 954
REJ09B0462-0100
Initial
Value
R/W
Description
0
R
Receive Data Read Request Flag
Indicates the ICDR (ICDRR) status in receive mode.
0: Indicates that the data has been already read from
1: Indicates that data has been received successfully
[Setting conditions]
When data is received successfully and transferred
from ICDRS to ICDRR.
(1) When data is received successfully while ICDRF =
(2) When ICDR is read successfully in receive mode
[Clearing conditions]
•
•
•
When ICDRF is set due to the condition (2) above,
ICDRF is temporarily cleared to 0 when ICDR (ICDRR)
is read; however, since data is transferred from ICDRS
to ICDRR immediately, ICDRF is set to 1 again.
Note that ICDR cannot be read successfully in transmit
mode (TRS = 1) because data is not transferred from
ICDRS to ICDRR. Be sure to read data from ICDR in
receive mode (TRS = 0).
ICDR (ICDRR) or ICDR is initialized.
and transferred from ICDRS to ICDRR, and the data
is ready to be read out.
0 (at the rise of the 9th clock pulse).
after data was received while ICDRF = 1.
When ICDR (ICDRR) is read.
When 0 is written to the ICE bit.
When the IIC is internally initialized using the CLR3
to CLR0 bits in DDCSWR.
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