ST STM32F2 User Manual

UM1940
LL I2S Generic Driver
DocID028236 Rev 2
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59.3 I2S Firmware driver defines
59.3.1 I2S
Audio Frequency
LL_I2S_AUDIOFREQ_192K
Audio Frequency configuration 192000 Hz
LL_I2S_AUDIOFREQ_96K
Audio Frequency configuration 96000 Hz
LL_I2S_AUDIOFREQ_48K
Audio Frequency configuration 48000 Hz
LL_I2S_AUDIOFREQ_44K
Audio Frequency configuration 44100 Hz
LL_I2S_AUDIOFREQ_32K
Audio Frequency configuration 32000 Hz
LL_I2S_AUDIOFREQ_22K
Audio Frequency configuration 22050 Hz
LL_I2S_AUDIOFREQ_16K
Audio Frequency configuration 16000 Hz
LL_I2S_AUDIOFREQ_11K
Audio Frequency configuration 11025 Hz
LL_I2S_AUDIOFREQ_8K
Audio Frequency configuration 8000 Hz
LL_I2S_AUDIOFREQ_DEFAULT
Audio Freq not specified. Register I2SDIV = 2
Data format
LL_I2S_DATAFORMAT_16B
Data length 16 bits, Channel lenght 16bit
LL_I2S_DATAFORMAT_16B_EXTENDED
Data length 16 bits, Channel lenght 32bit
LL_I2S_DATAFORMAT_24B
Data length 24 bits, Channel lenght 32bit
LL_I2S_DATAFORMAT_32B
Data length 16 bits, Channel lenght 32bit
Get Flags Defines
LL_I2S_SR_RXNE
Rx buffer not empty flag
LL_I2S_SR_TXE
Tx buffer empty flag
LL_I2S_SR_BSY
Busy flag
LL_I2S_SR_UDR
Underrun flag
LL_I2S_SR_OVR
Overrun flag
LL_I2S_SR_FRE
TI mode frame format error flag
MCLK Output
LL_I2S_MCLK_OUTPUT_DISABLE
Master clock output is disabled
LL_I2S_MCLK_OUTPUT_ENABLE
Master clock output is enabled
Operation Mode
LL_I2S_MODE_SLAVE_TX
Slave Tx configuration
LL_I2S_MODE_SLAVE_RX
Slave Rx configuration
LL_I2S_MODE_MASTER_TX
Master Tx configuration
LL_I2S_MODE_MASTER_RX
Master Rx configuration
Clock Polarity
LL_I2S_POLARITY_LOW
Clock steady state is low level
LL_I2S_POLARITY_HIGH
Clock steady state is high level

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English