SAI_InitTypeDef Struct Reference

Data Fields
uint32_t	AudioMode
uint32_t	Synchro
uint32_t	SynchroExt
uint32_t	MckOutput
uint32_t	OutputDrive
uint32_t	NoDivider
uint32_t	FIFOThreshold
uint32_t	AudioFrequency
uint32_t	Mckdiv
uint32_t	MckOverSampling
uint32_t	MonoStereoMode
uint32_t	CompandingMode
uint32_t	TriState
SAI_PdmInitTypeDef	PdmInit
uint32_t	Protocol
uint32_t	DataSize
uint32_t	FirstBit
uint32_t	ClockStrobing

Field Documentation

AudioFrequency

uint32_t SAI_InitTypeDef::AudioFrequency

Specifies the audio frequency sampling. This parameter can be a value of SAI Audio Frequency

AudioMode

uint32_t SAI_InitTypeDef::AudioMode

Specifies the SAI Block audio Mode. This parameter can be a value of SAI Block Mode

ClockStrobing

uint32_t SAI_InitTypeDef::ClockStrobing

Specifies the SAI Block clock strobing edge sensitivity. This parameter can be a value of SAI Block Clock Strobing

CompandingMode

uint32_t SAI_InitTypeDef::CompandingMode

Specifies the companding mode type. This parameter can be a value of SAI Block Companding Mode

DataSize

uint32_t SAI_InitTypeDef::DataSize

Specifies the SAI Block data size. This parameter can be a value of SAI Block Data Size

FIFOThreshold

uint32_t SAI_InitTypeDef::FIFOThreshold

Specifies SAI Block FIFO threshold. This parameter can be a value of SAI Block Fifo Threshold

FirstBit

uint32_t SAI_InitTypeDef::FirstBit

Specifies whether data transfers start from MSB or LSB bit. This parameter can be a value of SAI Block MSB LSB transmission

Mckdiv

uint32_t SAI_InitTypeDef::Mckdiv

Specifies the master clock divider. This parameter must be a number between Min_Data = 0 and Max_Data = 63.

Note

This parameter is used only if AudioFrequency is set to SAI_AUDIO_FREQUENCY_MCKDIV otherwise it is internally computed.

MckOutput

uint32_t SAI_InitTypeDef::MckOutput

Specifies whether master clock output will be generated or not. This parameter can be a value of SAI Block Master Clock Output

Note

This feature is only available on STM32H7xx Rev.B and above

MckOverSampling

uint32_t SAI_InitTypeDef::MckOverSampling

Specifies the master clock oversampling. This parameter can be a value of SAI Block Master Clock OverSampling

MonoStereoMode

uint32_t SAI_InitTypeDef::MonoStereoMode

Specifies if the mono or stereo mode is selected. This parameter can be a value of SAI Mono Stereo Mode

NoDivider

uint32_t SAI_InitTypeDef::NoDivider

Specifies whether master clock will be divided or not. This parameter can be a value of SAI Block NoDivider

Note

If bit NODIV in the SAI_xCR1 register is cleared, the frame length should be aligned to a number equal to a power of 2, from 8 to 256. If bit NODIV in the SAI_xCR1 register is set, the frame length can take any of the values from 8 to 256.

The NODIV bit is the same as NOMCK bit in STM32H7xx rev.Y

OutputDrive

uint32_t SAI_InitTypeDef::OutputDrive

Specifies when SAI Block outputs are driven. This parameter can be a value of SAI Block Output Drive

Note

This value has to be set before enabling the audio block but after the audio block configuration.

PdmInit

SAI_PdmInitTypeDef SAI_InitTypeDef::PdmInit

Specifies the PDM configuration.

Protocol

uint32_t SAI_InitTypeDef::Protocol

Specifies the SAI Block protocol. This parameter can be a value of SAI Block Protocol

Synchro

uint32_t SAI_InitTypeDef::Synchro

Specifies SAI Block synchronization This parameter can be a value of SAI Block Synchronization

SynchroExt

uint32_t SAI_InitTypeDef::SynchroExt

Specifies SAI external output synchronization, this setup is common for BlockA and BlockB This parameter can be a value of SAI External synchronisation

Note

If both audio blocks of same SAI are used, this parameter has to be set to the same value for each audio block

TriState

uint32_t SAI_InitTypeDef::TriState

Specifies the companding mode type. This parameter can be a value of SAI TRIState Management

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The documentation for this struct was generated from the following file:

• bsps/arm/stm32h7/include/stm32h7xx_hal_sai.h