DocID018909 Rev 11 955/1731
RM0090 Serial audio interface (SAI)
957
29.17.7 SAI xClear flag register (SAI_xCLRFR) where X is A or B
Address offset: block A: 0x01C
Address offset: block B: 0x03C
Reset value: 0x0000 0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reserved
CLFSDET
CAFSDE
T
CCNRDY
Reserved
CWCKCFG
CMUTE
DET
COVRUD
R
rw rw rw rw rw rw
Bits 31:7 Reserved, always read as 0.
Bit 6 CLFSDET: Clear late frame synchronization detection flag. This bit is write only.
Writing 1 in this bit clears the flag LFSDET in the SAI_xSR register.
It is not used in AC’97.
Reading this bit always returns the value 0.
Bit 5 .CAFSDET: Clear anticipated frame synchronization detection flag. This bit is write only.
Writing 1 in this bit clears the flag AFSDET in the SAI_xSR register.
It is not used in AC’97.
Reading this bit always returns the value 0.
Bit 4 CCNRDY: Clear codec not ready flag. This bit is write only.
Writing 1 in this bit clears the flag CNRDY in the SAI_xSR register.
This bit is used only when the AC’97 audio protocol is selected in the SAI_xCR1 register.
Reading this bit always returns the value 0.
Bit 3 Reserved, always read as 0.
Bit 2 CWCKCFG: Clear wrong clock configuration flag. This bit is write only.
Writing 1 in this bit clears the flag WCKCFG in the SAI_xSR register.
This bit is used only when the audio block is set as master (MODE[1] = 0 in the SAI_ACR1 register)
and bit NODIV = 0 in the SAI_xCR1 register.
Reading this bit always returns the value 0.
Bit 1 CMUTEDET: Mute detection flag. This bit is write only.
Writing 1 in this bit clears the flag MUTEDET in the SAI_xSR register.
Reading this bit always returns the value 0.
Bit 0 COVRUDR: Clear overrun / underrun. This bit is write only.
Writing 1 in this bit clears the flag OVRUDR in the SAI_xSR register.
Reading this bit always returns the value 0.
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