ST STM32F2 User Manual

UM1940
LL I2S Generic Driver
DocID028236 Rev 2
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59 LL I2S Generic Driver
59.1 I2S Firmware driver registers structures
59.1.1 LL_I2S_InitTypeDef
Data Fields
uint32_t Mode
uint32_t Standard
uint32_t DataFormat
uint32_t MCLKOutput
uint32_t AudioFreq
uint32_t ClockPolarity
Field Documentation
uint32_t LL_I2S_InitTypeDef::Mode
Specifies the I2S operating mode. This parameter can be a value of
I2S_LL_EC_MODEThis feature can be modified afterwards using unitary function
LL_I2S_SetTransferMode().
uint32_t LL_I2S_InitTypeDef::Standard
Specifies the standard used for the I2S communication. This parameter can be a
value of I2S_LL_EC_STANDARDThis feature can be modified afterwards using
unitary function LL_I2S_SetStandard().
uint32_t LL_I2S_InitTypeDef::DataFormat
Specifies the data format for the I2S communication. This parameter can be a value of
I2S_LL_EC_DATA_FORMATThis feature can be modified afterwards using unitary
function LL_I2S_SetDataFormat().
uint32_t LL_I2S_InitTypeDef::MCLKOutput
Specifies whether the I2S MCLK output is enabled or not. This parameter can be a
value of I2S_LL_EC_MCLK_OUTPUTThis feature can be modified afterwards using
unitary functions LL_I2S_EnableMasterClock() or LL_I2S_DisableMasterClock.
uint32_t LL_I2S_InitTypeDef::AudioFreq
Specifies the frequency selected for the I2S communication. This parameter can be a
value of I2S_LL_EC_AUDIO_FREQAudio Frequency can be modified afterwards
using Reference manual formulas to calculate Prescaler Linear, Parity and unitary
functions LL_I2S_SetPrescalerLinear() and LL_I2S_SetPrescalerParity() to set it.
uint32_t LL_I2S_InitTypeDef::ClockPolarity
Specifies the idle state of the I2S clock. This parameter can be a value of
I2S_LL_EC_POLARITYThis feature can be modified afterwards using unitary function
LL_I2S_SetClockPolarity().
59.2 I2S Firmware driver API description
59.2.1 Detailed description of functions
LL_I2S_Enable
Function name
__STATIC_INLINE void LL_I2S_Enable (SPI_TypeDef * SPIx)
Function description
Select I2S mode and Enable I2S peripheral.
Parameters
SPIx: SPI Instance

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English