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Bit
Bit Name
3
REND
2
ABF
1
FRF
0
HEADF
Note:
Only 0 can be written to clear the flag.
*
Initial
Value
R/W
Description
0
R/W*
Reception End Flag
[Setting condition]
When the CIR has finished data reception. (When a
stop is detected.)
[Clearing condition]
When writing 0 after reading REND = 1.
0
R/W*
Abort Flag
An internal reset is generated when an abort
(transfer format) is detected.
[Setting condition]
When data other than logic 0 or 1 is detected.
[Clearing condition]
When writing 0 after reading ABF = 1.
0
R/W*
Framing Error Flag
[Setting condition]
•
•
[Clearing condition]
When writing 0 after reading FRF = 1.
0
R/W*
Header Detection Flag
[Setting condition]
When a header is detected.
[Clearing condition]
When writing 0 after reading HEADF = 1.
When a stop is detected during data reception.
When the time period of a stop is too short.
Rev. 1.00 May 09, 2008 Page 435 of 954
Section 15 CIR Interface
REJ09B0462-0100
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