HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 533
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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Note:
Bit
0
Bit Name Initial Value R/W
ACKB
*
Only 0 can be written to clear the flag.
0
R/W
Acknowledge
This bit stores the acknowledgements.
Transmit mode:
[Setting condition]
•
[Clearing conditions]
•
•
Receive mode:
0: After reception of data, 0 is output as acknowledge data
1: After reception of data, 1 is output as acknowledge data
When this bit is read, the value that was loaded here (the
value returned from the receiving device) is read during
transmission (TRS = 1). During receive operations (TRS =
0), the value that was set is read.
When this bit is written, acknowledge data that is returned
after receiving is rewritten regardless of the TRS value. If
the ICSR register flag is written using bit-manipulation
instructions, the acknowledge data should be set again
since the acknowledge data setting is rewritten by the
reading value of ACKB bit.
Write the ACKE bit to 0 to clear the ACKB flag to 0, before
transmission is ended and a stop condition is issued in
master mode, or before transmission is ended and SDA is
released to issue a stop condition by a master device.
Description
Reception of 1 as an acknowledge bit when ACKE is 1
in transmit mode.
Reception of 0 as an acknowledge bit when ACKE is 1
in transmit mode.
Writing 0 to the ACKE bit
Rev.4.00 Mar. 27, 2008 Page 489 of 882
14. I
2
C Bus Interface (IIC) Option
REJ09B0108-0400
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