Clear Flag Register (Sai_Aclrfr / Sai_Bclrfr) - ST STM32L4x6 Reference Manual

Serial audio interface (SAI)
39.5.8

Clear flag register (SAI_ACLRFR / SAI_BCLRFR)

Address offset: block A: 0x01C
Address offset: block B: 0x03C
Reset value: 0x0000 0000
31 30 29 28 27
Res. Res. Res. Res. Res. Res.
15 14 13 12 11
Res. Res. Res. Res. Res. Res.
Bits 31:7 Reserved, always read as 0.
Bit 6 CLFSDET: Clear late frame synchronization detection flag.
This bit is write only.
Programming this bit to 1 clears the LFSDET flag in the SAI_xSR register.
This bit is not used in AC'97 or SPDIF mode
Reading this bit always returns the value 0.
Bit 5 .CAFSDET: Clear anticipated frame synchronization detection flag.
This bit is write only.
Programming this bit to 1 clears the AFSDET flag in the SAI_xSR register.
It is not used in AC'97 or SPDIF mode.
Reading this bit always returns the value 0.
Bit 4 CCNRDY: Clear Codec not ready flag.
This bit is write only.
Programming this bit to 1 clears the CNRDY flag 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.
Programming this bit to 1 clears the WCKCFG flag in the SAI_xSR register.
This bit is used only when the audio block is set as master (MODE[1] = 0) and 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.
Programming this bit to 1 clears the MUTEDET flag in the SAI_xSR register.
Reading this bit always returns the value 0.
Bit 0 COVRUDR: Clear overrun / underrun.
This bit is write only.
Programming this bit to 1 clears the OVRUDR flag in the SAI_xSR register.
Reading this bit always returns the value 0.
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26 25 24 23
Res. Res. Res.
10 9 8 7
Res. Res. Res. CLFSDET CAFSDET CCNRDY
DocID024597 Rev 3
22 21 20
Res. Res. Res.
6 5 4
w w w
19 18 17
Res. Res. Res.
3 2 1
CMUTE
Res. CWCKCFG
DET
w w
RM0351
16
Res.
0
COVRUD
R
w