Data Structures
struct	_asrc_channel_pair_config
	asrc channel pair configuation More...

struct	_asrc_transfer
	SAI transfer structure. More...

struct	_asrc_in_handle
	asrc in handler More...

struct	_asrc_out_handle
	output handler More...

struct	_asrc_handle
	ASRC handle structure. More...

Driver version
enum	{ kStatus_ASRCIdle = MAKE_STATUS(kStatusGroup_ASRC, 0) , kStatus_ASRCInIdle = MAKE_STATUS(kStatusGroup_ASRC, 1) , kStatus_ASRCOutIdle = MAKE_STATUS(kStatusGroup_ASRC, 2) , kStatus_ASRCBusy = MAKE_STATUS(kStatusGroup_ASRC, 3) , kStatus_ASRCInvalidArgument = MAKE_STATUS(kStatusGroup_ASRC, 4) , kStatus_ASRCClockConfigureFailed = MAKE_STATUS(kStatusGroup_ASRC, 5) , kStatus_ASRCChannelPairConfigureFailed = MAKE_STATUS(kStatusGroup_ASRC, 6) , kStatus_ASRCConvertError = MAKE_STATUS(kStatusGroup_ASRC, 7) , kStatus_ASRCNotSupport = MAKE_STATUS(kStatusGroup_ASRC, 8) , kStatus_ASRCQueueFull = MAKE_STATUS(kStatusGroup_ASRC, 9) , kStatus_ASRCOutQueueIdle = MAKE_STATUS(kStatusGroup_ASRC, 10) , kStatus_ASRCInQueueIdle = MAKE_STATUS(kStatusGroup_ASRC, 11) }
	ASRC return status . More...

enum	_asrc_channel_pair { kASRC_ChannelPairA = 0 , kASRC_ChannelPairB = 1 , kASRC_ChannelPairC = 2 }
	ASRC channel pair mask. More...

enum	{ kASRC_SampleRate_8000HZ = 8000U , kASRC_SampleRate_11025HZ = 11025U , kASRC_SampleRate_12000HZ = 12000U , kASRC_SampleRate_16000HZ = 16000U , kASRC_SampleRate_22050HZ = 22050U , kASRC_SampleRate_24000HZ = 24000U , kASRC_SampleRate_30000HZ = 30000U , kASRC_SampleRate_32000HZ = 32000U , kASRC_SampleRate_44100HZ = 44100U , kASRC_SampleRate_48000HZ = 48000U , kASRC_SampleRate_64000HZ = 64000U , kASRC_SampleRate_88200HZ = 88200U , kASRC_SampleRate_96000HZ = 96000U , kASRC_SampleRate_128000HZ = 128000U , kASRC_SampleRate_176400HZ = 176400U , kASRC_SampleRate_192000HZ = 192000U }
	ASRC support sample rate . More...

enum	{ kASRC_FPInWaitStateInterruptEnable = ASRC_ASRIER_AFPWE_MASK , kASRC_OverLoadInterruptMask = ASRC_ASRIER_AOLIE_MASK , kASRC_DataOutputCInterruptMask = ASRC_ASRIER_ADOEC_MASK , kASRC_DataOutputBInterruptMask = ASRC_ASRIER_ADOEB_MASK , kASRC_DataOutputAInterruptMask = ASRC_ASRIER_ADOEA_MASK , kASRC_DataInputCInterruptMask = ASRC_ASRIER_ADIEC_MASK , kASRC_DataInputBInterruptMask = ASRC_ASRIER_ADIEB_MASK , kASRC_DataInputAInterruptMask = ASRC_ASRIER_ADIEA_MASK }
	The ASRC interrupt enable flag . More...

enum	{ kASRC_StatusDSLCounterReady = ASRC_ASRSTR_DSLCNT_MASK , kASRC_StatusTaskQueueOverLoad = ASRC_ASRSTR_ATQOL_MASK , kASRC_StatusPairCOutputOverLoad = ASRC_ASRSTR_AOOLC_MASK , kASRC_StatusPairBOutputOverLoad = ASRC_ASRSTR_AOOLB_MASK , kASRC_StatusPairAOutputOverLoad = ASRC_ASRSTR_AOOLA_MASK , kASRC_StatusPairCInputOverLoad = ASRC_ASRSTR_AIOLC_MASK , kASRC_StatusPairBInputOverLoad = ASRC_ASRSTR_AIOLB_MASK , kASRC_StatusPairAInputOverLoad = ASRC_ASRSTR_AIOLA_MASK , kASRC_StatusPairCOutputOverflow = ASRC_ASRSTR_AODOC_MASK , kASRC_StatusPairBOutputOverflow = ASRC_ASRSTR_AODOB_MASK , kASRC_StatusPairAOutputOverflow = ASRC_ASRSTR_AODOA_MASK , kASRC_StatusPairCInputUnderflow = ASRC_ASRSTR_AIDUC_MASK , kASRC_StatusPairBInputUnderflow = ASRC_ASRSTR_AIDUB_MASK , kASRC_StatusPairAInputUnderflow = ASRC_ASRSTR_AIDUA_MASK , kASRC_StatusFPInWaitState = ASRC_ASRSTR_FPWT_MASK , kASRC_StatusOverloadError = ASRC_ASRSTR_AOLE_MASK , kASRC_StatusInputError , kASRC_StatusOutputError , kASRC_StatusPairCOutputReady = ASRC_ASRSTR_AODFC_MASK , kASRC_StatusPairBOutputReady = ASRC_ASRSTR_AODFB_MASK , kASRC_StatusPairAOutputReady = ASRC_ASRSTR_AODFA_MASK , kASRC_StatusPairCInputReady = ASRC_ASRSTR_AIDEC_MASK , kASRC_StatusPairBInputReady = ASRC_ASRSTR_AIDEB_MASK , kASRC_StatusPairAInputReady = ASRC_ASRSTR_AIDEA_MASK , kASRC_StatusPairAInterrupt = kASRC_StatusPairAInputReady \| kASRC_StatusPairAOutputReady , kASRC_StatusPairBInterrupt = kASRC_StatusPairBInputReady \| kASRC_StatusPairBOutputReady , kASRC_StatusPairCInterrupt = kASRC_StatusPairCInputReady \| kASRC_StatusPairCOutputReady }
	The ASRC interrupt status . More...

enum	{ kASRC_OutputFifoNearFull = ASRC_ASRFSTA_OAFA_MASK , kASRC_InputFifoNearEmpty = ASRC_ASRFSTA_IAEA_MASK }
	ASRC channel pair status . More...

enum	_asrc_ratio { kASRC_RatioNotUsed = 0U , kASRC_RatioUseInternalMeasured , kASRC_RatioUseIdealRatio }
	ASRC ideal ratio. More...

enum	_asrc_audio_channel { kASRC_ChannelsNumber1 = 1U , kASRC_ChannelsNumber2 = 2U , kASRC_ChannelsNumber3 = 3U , kASRC_ChannelsNumber4 = 4U , kASRC_ChannelsNumber5 = 5U , kASRC_ChannelsNumber6 = 6U , kASRC_ChannelsNumber7 = 7U , kASRC_ChannelsNumber8 = 8U , kASRC_ChannelsNumber9 = 9U , kASRC_ChannelsNumber10 = 10U }
	Number of channels in audio data. More...

enum	_asrc_data_width { kASRC_DataWidth24Bit = 0U , kASRC_DataWidth16Bit = 1U , kASRC_DataWidth8Bit = 2U }
	data width More...

enum	_asrc_data_align { kASRC_DataAlignMSB = 1U , kASRC_DataAlignLSB = 0U }
	data alignment More...

enum	_asrc_sign_extension { kASRC_NoSignExtension = 0U , kASRC_SignExtension = 1U }
	sign extension More...

typedef enum _asrc_channel_pair	asrc_channel_pair_t
	ASRC channel pair mask.

typedef enum _asrc_ratio	asrc_ratio_t
	ASRC ideal ratio.

typedef enum _asrc_audio_channel	asrc_audio_channel_t
	Number of channels in audio data.

typedef enum _asrc_data_width	asrc_data_width_t
	data width

typedef enum _asrc_data_align	asrc_data_align_t
	data alignment

typedef enum _asrc_sign_extension	asrc_sign_extension_t
	sign extension

typedef struct _asrc_channel_pair_config	asrc_channel_pair_config_t
	asrc channel pair configuation

typedef struct _asrc_transfer	asrc_transfer_t
	SAI transfer structure.

typedef struct _asrc_handle	asrc_handle_t
	asrc handler

typedef void(*	asrc_transfer_callback_t) (ASRC_Type base, asrc_handle_t handle, status_t status, void *userData)
	ASRC transfer callback prototype.

typedef struct _asrc_in_handle	asrc_in_handle_t
	asrc in handler

typedef struct _asrc_out_handle	asrc_out_handle_t
	output handler

#define	FSL_ASRC_DRIVER_VERSION (MAKE_VERSION(2, 1, 2))

#define	ASRC_XFER_QUEUE_SIZE (4U)
	ASRC transfer queue size, user can refine it according to use case.

#define	FSL_ASRC_CHANNEL_PAIR_COUNT (4U)
	ASRC channel pair count.

#define	FSL_ASRC_CHANNEL_PAIR_FIFO_DEPTH (64U)
	ASRC FIFO depth.

#define	ASRC_ASRCTR_AT_MASK(index) ((uint32_t)1U << (ASRC_ASRCTR_ATSA_SHIFT + (uint32_t)(index)))
	ASRC register access macro.

#define	ASRC_ASRCTR_RATIO_MASK(index) ((uint32_t)3U << (ASRC_ASRCTR_IDRA_SHIFT + (uint32_t)(index)*2U))

#define	ASRC_ASRCTR_RATIO(ratio, index) (((uint32_t)((uint32_t)(ratio) << (ASRC_ASRCTR_IDRA_SHIFT + (uint32_t)(index)*2U))) & ASRC_ASRCTR_RATIO_MASK(index))

#define	ASRC_ASRIER_INPUT_INTERRUPT_MASK(index) ((uint32_t)1U << (ASRC_ASRIER_ADIEA_SHIFT + (uint32_t)(index)))

#define	ASRC_ASRIER_OUTPUTPUT_INTERRUPT_MASK(index) ((uint32_t)1U << (ASRC_ASRIER_ADOEA_SHIFT + (uint32_t)(index)))

#define	ASRC_ASRCNCR_CHANNEL_COUNTER_MASK(index) ((uint32_t)0xFU << (ASRC_ASRCNCR_ANCA_SHIFT + (uint32_t)(index)*4U))

#define	ASRC_ASRCNCR_CHANNEL_COUNTER(counter, index)

#define	ASRC_ASRCFG_PRE_MODE_MASK(index) ((uint32_t)3U << (ASRC_ASRCFG_PREMODA_SHIFT + (uint32_t)(index)*4U))

#define	ASRC_ASRCFG_PRE_MODE(mode, index)

#define	ASRC_ASRCFG_POST_MODE_MASK(index) ((uint32_t)3U << (ASRC_ASRCFG_POSTMODA_SHIFT + (uint32_t)(index)*4U))

#define	ASRC_ASRCFG_POST_MODE(mode, index)

#define	ASRC_ASRCFG_INIT_DONE_MASK(index) ((uint32_t)1U << (ASRC_ASRCFG_INIRQA_SHIFT + (uint32_t)(index)))

#define	ASRC_ASRCSR_INPUT_CLOCK_SOURCE_MASK(index) ((uint32_t)0xFU << (ASRC_ASRCSR_AICSA_SHIFT + (uint32_t)(index)*4U))

#define	ASRC_ASRCSR_INPUT_CLOCK_SOURCE(source, index)

#define	ASRC_ASRCSR_OUTPUT_CLOCK_SOURCE_MASK(index) ((uint32_t)0xFU << (ASRC_ASRCSR_AOCSA_SHIFT + (uint32_t)(index)*4U))

#define	ASRC_ASRCSR_OUTPUT_CLOCK_SOURCE(source, index)

#define	ASRC_ASRCDR_INPUT_PRESCALER_MASK(index) ((uint32_t)(index) < 2U ? ((uint32_t)7U << (ASRC_ASRCDR1_AICPA_SHIFT + (uint32_t)(index)*6U)) : 7U)

#define	ASRC_ASRCDR_INPUT_PRESCALER(prescaler, index)

#define	ASRC_ASRCDR_INPUT_DIVIDER_MASK(index)

#define	ASRC_ASRCDR_INPUT_DIVIDER(divider, index)

#define	ASRC_ASRCDR_OUTPUT_PRESCALER_MASK(index) ((uint32_t)(index) < 2U ? ((uint32_t)7U << (ASRC_ASRCDR1_AOCPA_SHIFT + (uint32_t)(index)*6U)) : (7U << 6U))

#define	ASRC_ASRCDR_OUTPUT_PRESCALER(prescaler, index)

#define	ASRC_ASRCDR_OUTPUT_DIVIDER_MASK(index) ((uint32_t)(index) < 2U ? ((uint32_t)7U << (ASRC_ASRCDR1_AOCDA_SHIFT + (uint32_t)(index)*6U)) : (7UL << 9U))

#define	ASRC_ASRCDR_OUTPUT_DIVIDER(divider, index)

#define	ASCR_ASRCDR_OUTPUT_CLOCK_DIVIDER_PRESCALER(value, index)

#define	ASCR_ASRCDR_INPUT_CLOCK_DIVIDER_PRESCALER(value, index) (((uint32_t)(index) < 2U ? ((uint32_t)(value) << ((uint32_t)(index)*6U)) : ((uint32_t)(value))))

#define	ASRC_IDEAL_RATIO_HIGH(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRIDRHA) + (uint32_t)(index)*8U)

#define	ASRC_IDEAL_RATIO_LOW(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRIDRLA) + (uint32_t)(index)*8U)

#define	ASRC_ASRMCR(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRMCRA) + (uint32_t)(index)*8U)

#define	ASRC_ASRMCR1(base, index) (volatile uint32_t )((uint32_t)(&((base)->ASRMCR1[(index)])))

#define	ASRC_ASRDI(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRDIA) + (uint32_t)(index)*8U)

#define	ASRC_ASRDO(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRDOA) + (uint32_t)(index)*8U)

#define	ASRC_ASRDI_ADDR(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRDIA) + (uint32_t)(index)8U)

#define	ASRC_ASRDO_ADDR(base, index) (volatile uint32_t )((uint32_t)(&(base)->ASRDOA) + (uint32_t)(index)8U)

#define	ASRC_ASRFST_ADDR(base, index) ((volatile uint32_t )((uint32_t)(&(base)->ASRFSTA) + (uint32_t)(index)*8U))

#define	ASRC_GET_CHANNEL_COUNTER(base, index) (((base)->ASRCNCR >> ((uint32_t)(index)*4U)) & 0xFU)

Initialization and deinitialization
uint32_t	ASRC_GetInstance (ASRC_Type *base)
	Get instance number of the ASRC peripheral.

void	ASRC_Init (ASRC_Type *base, uint32_t asrcPeripheralClock_Hz)

void	ASRC_Deinit (ASRC_Type *base)
	De-initializes the ASRC peripheral.

void	ASRC_SoftwareReset (ASRC_Type *base)
	Do software reset .

status_t	ASRC_SetChannelPairConfig (ASRC_Type base, asrc_channel_pair_t channelPair, asrc_channel_pair_config_t config, uint32_t inputSampleRate, uint32_t outputSampleRate)
	ASRC configure channel pair.

uint32_t	ASRC_GetOutSamplesSize (ASRC_Type *base, asrc_channel_pair_t channelPair, uint32_t inSampleRate, uint32_t outSampleRate, uint32_t inSamplesize)
	Get output sample buffer size.

uint32_t	ASRC_MapSamplesWidth (ASRC_Type base, asrc_channel_pair_t channelPair, uint32_t inWidth, uint32_t *outWidth)
	Map register sample width to real sample width.

uint32_t	ASRC_GetRemainFifoSamples (ASRC_Type base, asrc_channel_pair_t channelPair, uint32_t buffer, uint32_t outSampleWidth, uint32_t remainSamples)
	Get left samples in fifo.

Bus Operations
status_t	ASRC_SetIdealRatioConfig (ASRC_Type *base, asrc_channel_pair_t channelPair, uint32_t inputSampleRate, uint32_t outputSampleRate)
	ASRC configure ideal ratio. The ideal ratio should be used when input clock source is not avalible.

Transactional
status_t	ASRC_TransferSetChannelPairConfig (ASRC_Type base, asrc_handle_t handle, asrc_channel_pair_config_t *config, uint32_t inputSampleRate, uint32_t outputSampleRate)
	ASRC configure channel pair.

void	ASRC_TransferCreateHandle (ASRC_Type base, asrc_handle_t handle, asrc_channel_pair_t channelPair, asrc_transfer_callback_t inCallback, asrc_transfer_callback_t outCallback, void *userData)
	Initializes the ASRC handle.

status_t	ASRC_TransferNonBlocking (ASRC_Type base, asrc_handle_t handle, asrc_transfer_t *xfer)
	Performs an interrupt non-blocking convert on asrc.

status_t	ASRC_TransferBlocking (ASRC_Type base, asrc_channel_pair_t channelPair, asrc_transfer_t xfer)
	Performs an blocking convert on asrc.

status_t	ASRC_TransferGetConvertedCount (ASRC_Type base, asrc_handle_t handle, size_t *count)
	Get converted byte count.

void	ASRC_TransferAbortConvert (ASRC_Type base, asrc_handle_t handle)
	Aborts the current convert.

void	ASRC_TransferTerminateConvert (ASRC_Type base, asrc_handle_t handle)
	Terminate all ASRC convert.

void	ASRC_TransferHandleIRQ (ASRC_Type base, asrc_handle_t handle)
	ASRC convert interrupt handler.

Detailed Description

Macro Definition Documentation

◆ ASCR_ASRCDR_OUTPUT_CLOCK_DIVIDER_PRESCALER

#define ASCR_ASRCDR_OUTPUT_CLOCK_DIVIDER_PRESCALER	(	value,
		index
	)

Value:

(((uint32_t)(index) < 2U ? ((uint32_t)(value) << (ASRC_ASRCDR1_AOCPA_SHIFT + (uint32_t)(index)*6U)) : \

((uint32_t)(value) << 6U)))

◆ ASRC_ASRCDR_INPUT_DIVIDER

#define ASRC_ASRCDR_INPUT_DIVIDER	(	divider,
		index
	)

Value:

    (((uint32_t)(index) < 2U ? ((uint32_t)(divider) << (ASRC_ASRCDR1_AICDA_SHIFT + (uint32_t)(index)*6U)) : \
                               ((uint32_t)(divider) << ASRC_ASRCDR1_AICDA_SHIFT)) &                         \
     ASRC_ASRCDR_INPUT_DIVIDER_MASK(index))

◆ ASRC_ASRCDR_INPUT_DIVIDER_MASK

#define ASRC_ASRCDR_INPUT_DIVIDER_MASK ( index )

Value:

((uint32_t)(index) < 2U ? ((uint32_t)7U << (ASRC_ASRCDR1_AICDA_SHIFT + (uint32_t)(index)*6U)) : \

(7U << ASRC_ASRCDR1_AICDA_SHIFT))

◆ ASRC_ASRCDR_INPUT_PRESCALER

#define ASRC_ASRCDR_INPUT_PRESCALER	(	prescaler,
		index
	)

Value:

(((index) < 2U ? ((uint32_t)(prescaler) << (ASRC_ASRCDR1_AICPA_SHIFT + (uint32_t)(index)*6U)) : (prescaler)) & \

ASRC_ASRCDR1_INPUT_PRESCALER_MASK(index))

◆ ASRC_ASRCDR_OUTPUT_DIVIDER

#define ASRC_ASRCDR_OUTPUT_DIVIDER	(	divider,
		index
	)

Value:

    (((uint32_t)(index) < 2U ? ((uint32_t)(divider) << (ASRC_ASRCDR1_AOCDA_SHIFT + (uint32_t)(index)*6U)) : \
                               ((uint32_t)(divider) << 9U)) &                                               \
     ASRC_ASRCDR_OUTPUT_DIVIDER_MASK(index))

◆ ASRC_ASRCDR_OUTPUT_PRESCALER

#define ASRC_ASRCDR_OUTPUT_PRESCALER	(	prescaler,
		index
	)

Value:

    (((uint32_t)(index) < 2U ? ((uint32_t)(prescaler) << (ASRC_ASRCDR1_AOCPA_SHIFT + (uint32_t)(index)*6U)) : \
                               ((uint32_t)(prescaler) << 6U)) &                                               \
     ASRC_ASRCDR_OUTPUT_PRESCALER_MASK(index))

◆ ASRC_ASRCFG_POST_MODE

#define ASRC_ASRCFG_POST_MODE	(	mode,
		index
	)

Value:

((uint32_t)((uint32_t)(mode) << (ASRC_ASRCFG_POSTMODA_SHIFT + (uint32_t)(index)*4U)) & \

ASRC_ASRCFG_POST_MODE_MASK(index))

◆ ASRC_ASRCFG_PRE_MODE

#define ASRC_ASRCFG_PRE_MODE	(	mode,
		index
	)

Value:

((uint32_t)((uint32_t)(mode) << (ASRC_ASRCFG_PREMODA_SHIFT + (uint32_t)(index)*4U)) & \

ASRC_ASRCFG_PRE_MODE_MASK(index))

◆ ASRC_ASRCNCR_CHANNEL_COUNTER

#define ASRC_ASRCNCR_CHANNEL_COUNTER	(	counter,
		index
	)

Value:

((uint32_t)((uint32_t)(counter) << (ASRC_ASRCNCR_ANCA_SHIFT + (uint32_t)(index)*4U)) & \

ASRC_ASRCNCR_CHANNEL_COUNTER_MASK(index))

◆ ASRC_ASRCSR_INPUT_CLOCK_SOURCE

#define ASRC_ASRCSR_INPUT_CLOCK_SOURCE	(	source,
		index
	)

Value:

((uint32_t)((uint32_t)(source) << (ASRC_ASRCSR_AICSA_SHIFT + (uint32_t)(index)*4U)) & \

ASRC_ASRCSR_INPUT_CLOCK_SOURCE_MASK(index))

◆ ASRC_ASRCSR_OUTPUT_CLOCK_SOURCE

#define ASRC_ASRCSR_OUTPUT_CLOCK_SOURCE	(	source,
		index
	)

Value:

((uint32_t)((uint32_t)(source) << (ASRC_ASRCSR_AOCSA_SHIFT + (uint32_t)(index)*4U)) & \

ASRC_ASRCSR_OUTPUT_CLOCK_SOURCE_MASK(index))

◆ FSL_ASRC_DRIVER_VERSION

#define FSL_ASRC_DRIVER_VERSION (MAKE_VERSION(2, 1, 2))

Version 2.1.2

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

ASRC return status .

Enumerator
kStatus_ASRCIdle	ASRC is idle.
kStatus_ASRCInIdle	ASRC in is idle.
kStatus_ASRCOutIdle	ASRC out is idle.
kStatus_ASRCBusy	ASRC is busy.
kStatus_ASRCInvalidArgument	ASRC invalid argument.
kStatus_ASRCClockConfigureFailed	ASRC clock configure failed
kStatus_ASRCChannelPairConfigureFailed	ASRC clock configure failed
kStatus_ASRCConvertError	ASRC clock configure failed
kStatus_ASRCNotSupport	ASRC not support
kStatus_ASRCQueueFull	ASRC queue is full
kStatus_ASRCOutQueueIdle	ASRC out queue is idle
kStatus_ASRCInQueueIdle	ASRC in queue is idle

◆ anonymous enum

anonymous enum

ASRC support sample rate .

Enumerator
kASRC_SampleRate_8000HZ	asrc sample rate 8KHZ
kASRC_SampleRate_11025HZ	asrc sample rate 11.025KHZ
kASRC_SampleRate_12000HZ	asrc sample rate 12KHZ
kASRC_SampleRate_16000HZ	asrc sample rate 16KHZ
kASRC_SampleRate_22050HZ	asrc sample rate 22.05KHZ
kASRC_SampleRate_24000HZ	asrc sample rate 24KHZ
kASRC_SampleRate_30000HZ	asrc sample rate 30KHZ
kASRC_SampleRate_32000HZ	asrc sample rate 32KHZ
kASRC_SampleRate_44100HZ	asrc sample rate 44.1KHZ
kASRC_SampleRate_48000HZ	asrc sample rate 48KHZ
kASRC_SampleRate_64000HZ	asrc sample rate 64KHZ
kASRC_SampleRate_88200HZ	asrc sample rate 88.2KHZ
kASRC_SampleRate_96000HZ	asrc sample rate 96KHZ
kASRC_SampleRate_128000HZ	asrc sample rate 128KHZ
kASRC_SampleRate_176400HZ	asrc sample rate 176.4KHZ
kASRC_SampleRate_192000HZ	asrc sample rate 192KHZ

◆ anonymous enum

anonymous enum

The ASRC interrupt enable flag .

Enumerator
kASRC_FPInWaitStateInterruptEnable	FP in wait state mask
kASRC_OverLoadInterruptMask	overload interrupt mask
kASRC_DataOutputCInterruptMask	data output c interrupt mask
kASRC_DataOutputBInterruptMask	data output b interrupt mask
kASRC_DataOutputAInterruptMask	data output a interrupt mask
kASRC_DataInputCInterruptMask	data input c interrupt mask
kASRC_DataInputBInterruptMask	data input b interrupt mask
kASRC_DataInputAInterruptMask	data input a interrupt mask

◆ anonymous enum

anonymous enum

The ASRC interrupt status .

Enumerator
kASRC_StatusDSLCounterReady	DSL counter
kASRC_StatusTaskQueueOverLoad	task queue overload
kASRC_StatusPairCOutputOverLoad	pair c output overload
kASRC_StatusPairBOutputOverLoad	pair b output overload
kASRC_StatusPairAOutputOverLoad	pair a output overload
kASRC_StatusPairCInputOverLoad	pair c input overload
kASRC_StatusPairBInputOverLoad	pair b input overload
kASRC_StatusPairAInputOverLoad	pair a input overload
kASRC_StatusPairCOutputOverflow	pair c output overflow
kASRC_StatusPairBOutputOverflow	pair b output overflow
kASRC_StatusPairAOutputOverflow	pair a output overflow
kASRC_StatusPairCInputUnderflow	pair c input underflow
kASRC_StatusPairBInputUnderflow	pair b input under flow
kASRC_StatusPairAInputUnderflow	pair a input underflow
kASRC_StatusFPInWaitState	FP in wait state
kASRC_StatusOverloadError	overload error
kASRC_StatusInputError	input error status
kASRC_StatusOutputError	output error status
kASRC_StatusPairCOutputReady	pair c output ready
kASRC_StatusPairBOutputReady	pair b output ready
kASRC_StatusPairAOutputReady	pair a output ready
kASRC_StatusPairCInputReady	pair c input ready
kASRC_StatusPairBInputReady	pair b input ready
kASRC_StatusPairAInputReady	pair a input ready
kASRC_StatusPairAInterrupt	pair A interrupt
kASRC_StatusPairBInterrupt	pair B interrupt
kASRC_StatusPairCInterrupt	pair C interrupt

◆ anonymous enum

anonymous enum

ASRC channel pair status .

Enumerator
kASRC_OutputFifoNearFull	channel pair output fifo near full
kASRC_InputFifoNearEmpty	channel pair input fifo near empty

◆ _asrc_audio_channel

enum _asrc_audio_channel

Number of channels in audio data.

Enumerator
kASRC_ChannelsNumber1	channel number is 1
kASRC_ChannelsNumber2	channel number is 2
kASRC_ChannelsNumber3	channel number is 3
kASRC_ChannelsNumber4	channel number is 4
kASRC_ChannelsNumber5	channel number is 5
kASRC_ChannelsNumber6	channel number is 6
kASRC_ChannelsNumber7	channel number is 7
kASRC_ChannelsNumber8	channel number is 8
kASRC_ChannelsNumber9	channel number is 9
kASRC_ChannelsNumber10	channel number is 10

◆ _asrc_channel_pair

enum _asrc_channel_pair

ASRC channel pair mask.

Enumerator
kASRC_ChannelPairA	channel pair A value
kASRC_ChannelPairB	channel pair B value
kASRC_ChannelPairC	channel pair C value

◆ _asrc_data_align

enum _asrc_data_align

data alignment

Enumerator
kASRC_DataAlignMSB	data alignment MSB
kASRC_DataAlignLSB	data alignment LSB

◆ _asrc_data_width

enum _asrc_data_width

data width

Enumerator
kASRC_DataWidth24Bit	data width 24bit
kASRC_DataWidth16Bit	data width 16bit
kASRC_DataWidth8Bit	data width 8bit

◆ _asrc_ratio

enum _asrc_ratio

ASRC ideal ratio.

Enumerator
kASRC_RatioNotUsed	ideal ratio not used
kASRC_RatioUseInternalMeasured	ideal ratio use internal measure ratio, can be used for real time streaming audio
kASRC_RatioUseIdealRatio	ideal ratio use manual configure ratio, can be used for the non-real time streaming audio

◆ _asrc_sign_extension

enum _asrc_sign_extension

sign extension

Enumerator
kASRC_NoSignExtension	no sign extension
kASRC_SignExtension	sign extension

Function Documentation

◆ ASRC_Deinit()

void ASRC_Deinit ( ASRC_Type * base )

De-initializes the ASRC peripheral.

This API gates the ASRC clock and disable ASRC module. The ASRC module can't operate unless ASRC_Init

Parameters

base	ASRC base pointer.

brief De-initializes the ASRC peripheral.

This API gates the ASRC clock and disable ASRC module. The ASRC module can't operate unless ASRC_Init

param base ASRC base pointer.

◆ ASRC_GetInstance()

uint32_t ASRC_GetInstance ( ASRC_Type * base )

Get instance number of the ASRC peripheral.

Parameters

base	ASRC base pointer.

◆ ASRC_GetOutSamplesSize()

uint32_t ASRC_GetOutSamplesSize	(	ASRC_Type *	base,
		asrc_channel_pair_t	channelPair,
		uint32_t	inSampleRate,
		uint32_t	outSampleRate,
		uint32_t	inSamplesize
	)

Get output sample buffer size.

Note: This API is depends on the ASRC output configuration, should be called after the ASRC_SetChannelPairConfig.

Parameters

base	asrc base pointer.
channelPair	ASRC channel pair number.
inSampleRate	input sample rate.
outSampleRate	output sample rate.
inSamplesize	input sampleS size.

Return values

output buffer size in byte.

brief Get output sample buffer size.

note This API is depends on the ASRC output configuration, should be called after the ASRC_SetChannelPairConfig.

param base asrc base pointer. param channelPair ASRC channel pair number. param inSampleRate input sample rate. param outSampleRate output sample rate. param inSamples input sampleS size. retval output buffer size in byte.

◆ ASRC_GetRemainFifoSamples()

uint32_t ASRC_GetRemainFifoSamples	(	ASRC_Type *	base,
		asrc_channel_pair_t	channelPair,
		uint32_t *	buffer,
		uint32_t	outSampleWidth,
		uint32_t	remainSamples
	)

Get left samples in fifo.

Parameters

base	asrc base pointer.
channelPair	ASRC channel pair number.
buffer	input sample numbers.
outSampleWidth	output sample width.
remainSamples	output sample rate.

Return values

remain samples number.

brief Get left samples in fifo.

param base asrc base pointer. param channelPair ASRC channel pair number. param buffer input sample numbers. param outSampleWidth output sample width. param remainSamples output sample rate. retval remain samples number.

◆ ASRC_Init()

void ASRC_Init	(	ASRC_Type *	base,
		uint32_t	asrcPeripheralClock_Hz
	)

brief Initializes the asrc peripheral.

This API gates the asrc clock. The asrc module can't operate unless ASRC_Init is called to enable the clock.

param base asrc base pointer. param asrcPeripheralClock_Hz peripheral clock of ASRC.

◆ ASRC_MapSamplesWidth()

uint32_t ASRC_MapSamplesWidth	(	ASRC_Type *	base,
		asrc_channel_pair_t	channelPair,
		uint32_t *	inWidth,
		uint32_t *	outWidth
	)

Map register sample width to real sample width.

Note: This API is depends on the ASRC configuration, should be called after the ASRC_SetChannelPairConfig.

Parameters

base	asrc base pointer.
channelPair	asrc channel pair index.
inWidth	ASRC channel pair number.
outWidth	input sample rate.

Return values

input sample mask value.

brief Map register sample width to real sample width.

note This API is depends on the ASRC configuration, should be called after the ASRC_SetChannelPairConfig. param base asrc base pointer. param channelPair asrc channel pair index. param inWidth ASRC channel pair number. param outWidth input sample rate. retval input sample mask value.

◆ ASRC_SetChannelPairConfig()

status_t ASRC_SetChannelPairConfig	(	ASRC_Type *	base,
		asrc_channel_pair_t	channelPair,
		asrc_channel_pair_config_t *	config,
		uint32_t	inputSampleRate,
		uint32_t	outputSampleRate
	)

ASRC configure channel pair.

Parameters

base	ASRC base pointer.
channelPair	index of channel pair, reference _asrc_channel_pair.
config	ASRC channel pair configuration pointer.
inputSampleRate	input audio data sample rate.
outputSampleRate	output audio data sample rate.

brief ASRC configure channel pair.

param base ASRC base pointer. param channelPair index of channel pair, reference _asrc_channel_pair. param config ASRC channel pair configuration pointer. param inputSampleRate in audio data sample rate. param outSampleRate out audio data sample rate.

◆ ASRC_SetIdealRatioConfig()

status_t ASRC_SetIdealRatioConfig	(	ASRC_Type *	base,
		asrc_channel_pair_t	channelPair,
		uint32_t	inputSampleRate,
		uint32_t	outputSampleRate
	)

ASRC configure ideal ratio. The ideal ratio should be used when input clock source is not avalible.

Parameters

base	ASRC base pointer.
channelPair	ASRC channel pair.
inputSampleRate	input audio data sample rate.
outputSampleRate	output audio data sample rate.

brief ASRC configure ideal ratio. The ideal ratio should be used when input clock source is not avalible.

param base ASRC base pointer. param channelPair ASRC channel pair. param inputSampleRate input audio data sample rate. param outputSampleRate output audio data sample rate.

◆ ASRC_SoftwareReset()

void ASRC_SoftwareReset ( ASRC_Type * base )

Do software reset .

This software reset bit is self-clear bit, it will generate a software reset signal inside ASRC. After 9 cycles of the ASRC processing clock, this reset process will stop and this bit will cleared automatically.

Parameters

base	ASRC base pointer

brief Do software reset .

This software reset bit is self-clear bit, it will generate a software reset signal inside ASRC. After 9 cycles of the ASRC processing clock, this reset process will stop and this bit will cleared automatically.

param base ASRC base pointer

◆ ASRC_TransferAbortConvert()

void ASRC_TransferAbortConvert	(	ASRC_Type *	base,
		asrc_handle_t *	handle
	)

Aborts the current convert.

Note: This API can be called any time when an interrupt non-blocking transfer initiates to abort the transfer early.

Parameters

base	ASRC base pointer.
handle	Pointer to the asrc_handle_t structure which stores the transfer state.

brief Aborts the current convert.

note This API can be called any time when an interrupt non-blocking transfer initiates to abort the transfer early.

param base asrc base pointer. param handle Pointer to the ASRC_handle_t structure which stores the transfer state.

◆ ASRC_TransferBlocking()

status_t ASRC_TransferBlocking	(	ASRC_Type *	base,
		asrc_channel_pair_t	channelPair,
		asrc_transfer_t *	xfer
	)

Performs an blocking convert on asrc.

Note: This API returns immediately after the convert finished.

Parameters

base	asrc base pointer.
channelPair	channel pair index.
xfer	Pointer to the ASRC_transfer_t structure.

Return values

kStatus_Success Successfully started the data receive.

brief Performs an blocking convert on asrc.

note This API returns immediately after the convert finished.

param base asrc base pointer. param channelPair channel pair index. param xfer Pointer to the ASRC_transfer_t structure. retval kStatus_Success Successfully started the data receive.

◆ ASRC_TransferCreateHandle()

void ASRC_TransferCreateHandle	(	ASRC_Type *	base,
		asrc_handle_t *	handle,
		asrc_channel_pair_t	channelPair,
		asrc_transfer_callback_t	inCallback,
		asrc_transfer_callback_t	outCallback,
		void *	userData
	)

Initializes the ASRC handle.

This function initializes the handle for the ASRC transactional APIs. Call this function once to get the handle initialized.

Parameters

base	ASRC base pointer
handle	ASRC handle pointer.
channelPair	ASRC channel pair.
inCallback	Pointer to the user callback function.
outCallback	Pointer to the user callback function.
userData	User parameter passed to the callback function

brief Initializes the ASRC handle.

This function initializes the handle for the ASRC transactional APIs. Call this function once to get the handle initialized.

param base ASRC base pointer param handle ASRC handle pointer. param inCallback Pointer to the user callback function. param outCallback Pointer to the user callback function. param userData User parameter passed to the callback function

◆ ASRC_TransferGetConvertedCount()

status_t ASRC_TransferGetConvertedCount	(	ASRC_Type *	base,
		asrc_handle_t *	handle,
		size_t *	count
	)

Get converted byte count.

Parameters

base	ASRC base pointer.
handle	Pointer to the asrc_handle_t structure which stores the transfer state.
count	Bytes count sent.

Return values

kStatus_Success	Succeed get the transfer count.
kStatus_ASRCIdle	There is not a non-blocking transaction currently in progress.

brief Gets a set byte count.

param base asrc base pointer. param handle Pointer to the ASRC_handle_t structure which stores the transfer state. param count Bytes count sent. retval kStatus_Success Succeed get the transfer count. retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress.

◆ ASRC_TransferHandleIRQ()

void ASRC_TransferHandleIRQ	(	ASRC_Type *	base,
		asrc_handle_t *	handle
	)

ASRC convert interrupt handler.

Parameters

base	ASRC base pointer.
handle	Pointer to the asrc_handle_t structure.

brief ASRC convert interrupt handler.

param base asrc base pointer. param handle Pointer to the asrc_handle_t structure.

◆ ASRC_TransferNonBlocking()

status_t ASRC_TransferNonBlocking	(	ASRC_Type *	base,
		asrc_handle_t *	handle,
		asrc_transfer_t *	xfer
	)

Performs an interrupt non-blocking convert on asrc.

Note: This API returns immediately after the transfer initiates, application should check the wait and check the callback status.

Parameters

base	asrc base pointer.
handle	Pointer to the asrc_handle_t structure which stores the transfer state.
xfer	Pointer to the ASRC_transfer_t structure.

Return values

kStatus_Success	Successfully started the data receive.
kStatus_ASRCBusy	Previous receive still not finished.

brief Performs an interrupt non-blocking convert on asrc.

note This API returns immediately after the transfer initiates, application should check the wait and check the callback status.

param base asrc base pointer. param handle Pointer to the asrc_handle_t structure which stores the transfer state. param xfer Pointer to the ASRC_transfer_t structure. retval kStatus_Success Successfully started the data receive. retval kStatus_ASRCBusy Previous receive still not finished.

◆ ASRC_TransferSetChannelPairConfig()

status_t ASRC_TransferSetChannelPairConfig	(	ASRC_Type *	base,
		asrc_handle_t *	handle,
		asrc_channel_pair_config_t *	config,
		uint32_t	inputSampleRate,
		uint32_t	outputSampleRate
	)

ASRC configure channel pair.

Parameters

base	ASRC base pointer.
handle	ASRC transactional handle pointer.
config	ASRC channel pair configuration pointer.
inputSampleRate	input audio data sample rate.
outputSampleRate	output audio data sample rate.

brief ASRC configure channel pair.

param base ASRC base pointer. param handle ASRC transactional handle pointer. param config ASRC channel pair configuration pointer. param inputSampleRate in audio data sample rate. param outputSampleRate out audio data sample rate.

◆ ASRC_TransferTerminateConvert()

void ASRC_TransferTerminateConvert	(	ASRC_Type *	base,
		asrc_handle_t *	handle
	)

Terminate all ASRC convert.

This function will clear all transfer slots buffered in the asrc queue. If users only want to abort the current transfer slot, please call ASRC_TransferAbortConvert.

Parameters

base	ASRC base pointer.
handle	ASRC eDMA handle pointer.

brief Terminate all asrc convert.

This function will clear all transfer slots buffered in the asrc queue. If users only want to abort the current transfer slot, please call ASRC_TransferAbortSend.

param base asrc base pointer. param handle asrc eDMA handle pointer.

Data Structures

Driver version

Initialization and deinitialization

Bus Operations

Transactional

Detailed Description

Macro Definition Documentation

◆ ASCR_ASRCDR_OUTPUT_CLOCK_DIVIDER_PRESCALER

◆ ASRC_ASRCDR_INPUT_DIVIDER

◆ ASRC_ASRCDR_INPUT_DIVIDER_MASK

◆ ASRC_ASRCDR_INPUT_PRESCALER

◆ ASRC_ASRCDR_OUTPUT_DIVIDER

◆ ASRC_ASRCDR_OUTPUT_PRESCALER

◆ ASRC_ASRCFG_POST_MODE

◆ ASRC_ASRCFG_PRE_MODE

◆ ASRC_ASRCNCR_CHANNEL_COUNTER

◆ ASRC_ASRCSR_INPUT_CLOCK_SOURCE

◆ ASRC_ASRCSR_OUTPUT_CLOCK_SOURCE

◆ FSL_ASRC_DRIVER_VERSION

Enumeration Type Documentation

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ _asrc_audio_channel

◆ _asrc_channel_pair

◆ _asrc_data_align

◆ _asrc_data_width

◆ _asrc_ratio

◆ _asrc_sign_extension

Function Documentation

◆ ASRC_Deinit()

◆ ASRC_GetInstance()

◆ ASRC_GetOutSamplesSize()

◆ ASRC_GetRemainFifoSamples()

◆ ASRC_Init()

◆ ASRC_MapSamplesWidth()

◆ ASRC_SetChannelPairConfig()

◆ ASRC_SetIdealRatioConfig()

◆ ASRC_SoftwareReset()

◆ ASRC_TransferAbortConvert()

◆ ASRC_TransferBlocking()

◆ ASRC_TransferCreateHandle()

◆ ASRC_TransferGetConvertedCount()

◆ ASRC_TransferHandleIRQ()

◆ ASRC_TransferNonBlocking()

◆ ASRC_TransferSetChannelPairConfig()

◆ ASRC_TransferTerminateConvert()