Overview

The ak4497 driver provide codec control interface.

Modules
	ak4497 adapter

Data Structures
struct	ak4497_dsd_config_t
	Initialize DSD mode structure of AK4497. More...

struct	ak4497_pcm_config_t
	Initialize PCM mode structure of AK4497. More...

struct	ak4497_config_t
	Initialize structure of AK4497. More...

struct	ak4497_handle_t
	ak4497 codec handler More...

Macros
#define	AK4497_I2C_HANDLER_SIZE CODEC_I2C_MASTER_HANDLER_SIZE
	ak4497 handle size

#define	AK4497_CONTROL1 (0x00)
	define the registers offset of AK4497. More...

#define	AK4497_CONTROL1_RSTN_MASK (0x1U)
	define BIT info of AK4497. More...

#define	AK4497_I2C_ADDR (0x11)
	AK4497 I2C address. More...

#define	AK4497_I2C_BITRATE (100000U)
	AK4497 i2c baudrate.

Enumerations
enum	ak4497_mode_t
	The AK4497 playback mode.

enum	ak4497_data_channel_mode_t { kAK4497_NormalMode = 0x0, kAK4497_ExchangeMode = 0x1 }
	The Data selection of L-channel and R-channel for DSD mode, defined by SELLR bit. More...

enum	ak4497_dsd_input_path_t { kAK4497_Path0 = 0x0, kAK4497_Path1 = 0x1 }
	The data path select for DSD mode. More...

enum	ak4497_dsd_mclk_t { kAK4497_mclk512fs = 0x0, kAK4497_mclk768fs = 0x1 }
	The MCLK select for DSD mode, defined by DCKS bit. More...

enum	ak4497_dsd_dclk_t { kAK4497_dclk64fs = 0x0, kAK4497_dclk128fs = 0x1, kAK4497_dclk256fs = 0x2, kAK4497_dclk512fs = 0x3 }
	The DCLK select for DSD mode, defined by DSDSEL[1:0]. More...

enum	ak4497_dsd_playback_path_t { kAK4497_NormalPath = 0x0, kAK4497_VolumeBypass = 0x1 }
	DSD playback path. More...

enum	ak4497_dsd_data_mute_t
	DSD mute flag.

enum	ak4497_dsd_dclk_polarity_t { kAK4497_FallingEdge = 0x0, kAK4497_RisingEdge = 0x1 }
	DSD bclk polarity. More...

enum	ak4497_pcm_samplefreqmode_t { kAK4497_ManualSettingMode = 0x0, kAK4497_AutoSettingMode = 0x1, kAK4497_FsAutoDetectMode = 0x2 }
	The sampling frequency mode for PCM and EXDF mode, defined by CR01[AFSD], CR00[ACKS]. More...

enum	ak4497_pcm_samplefreqselect_t { kAK4497_NormalSpeed = 0x0, kAK4497_DoubleSpeed = 0x1, kAK4497_QuadSpeed = 0x2, kAK4497_OctSpeed = 0x4, kAK4497_HexSpeed = 0x5 }
	The sampling speed select, defined by DFS[2:0]. More...

enum	ak4497_pcm_sdata_format_t { kAK4497_16BitLSB = 0x0, kAK4497_20BitLSB = 0x1, kAK4497_24BitMSB = 0x2, kAK4497_16_24BitI2S = 0x3, kAK4497_24BitLSB = 0x4, kAK4497_32BitLSB = 0x5, kAK4497_32BitMSB = 0x6, kAK4497_32BitI2S = 0x7 }
	The audio data interface modes, defined by DIF[2:0]. More...

enum	ak4497_pcm_tdm_mode_t { kAK4497_Normal = 0x0, kAK4497_TDM128 = 0x1, kAK4497_TDM256 = 0x2, kAK4497_TDM512 = 0x3 }
	The TDM mode select, defined by TDM[1:0]. More...

enum	ak4497_pcm_sds_select_t
	The audio data slot selection, defined by SDS[2:0].

enum	ak4497_module_ctrl_cmd_t { kAK4497_ModuleSwitchI2SInInterface = 0U }
	audio codec module control cmd More...

enum	_ak4497_module_ctrl_i2s_in_interface { kAK4497_ModuleI2SInInterfacePCM = 0U, kAK4497_ModuleI2SInInterfaceDSD = 1U }
	audio codec module digital interface More...

Functions
void	AK4497_DefaultConfig (ak4497_config_t *config)
	Default initializes AK4497. More...

status_t	AK4497_Init (ak4497_handle_t handle, ak4497_config_t config)
	Initializes AK4497. More...

status_t	AK4497_SetEncoding (ak4497_handle_t *handle, uint8_t format)
	Set the codec PCM mode or DSD mode based on the format info. More...

status_t	AK4497_ConfigDataFormat (ak4497_handle_t *handle, uint32_t mclk, uint32_t sampleRate, uint32_t bitWidth)
	Configure the data format of audio data. More...

status_t	AK4497_SetVolume (ak4497_handle_t *handle, uint8_t value)
	Set the volume of different modules in AK4497. More...

status_t	AK4497_GetVolume (ak4497_handle_t handle, uint8_t value)
	Get the volume of different modules in AK4497. More...

status_t	AK4497_ModuleControl (ak4497_handle_t *handle, ak4497_module_ctrl_cmd_t cmd, uint32_t data)
	AK4497 codec module control. More...

status_t	AK4497_Deinit (ak4497_handle_t *handle)
	Deinit the AK4497 codec. More...

status_t	AK4497_WriteReg (ak4497_handle_t *handle, uint8_t reg, uint8_t val)
	Write register to AK4497 using I2C. More...

status_t	AK4497_ReadReg (ak4497_handle_t handle, uint8_t reg, uint8_t val)
	Read register from AK4497 using I2C. More...

status_t	AK4497_ModifyReg (ak4497_handle_t *handle, uint8_t reg, uint8_t mask, uint8_t val)
	Modify some bits in the register using I2C. More...

Driver version
#define	FSL_AK4497_DRIVER_VERSION (MAKE_VERSION(2, 1, 0))
	CLOCK driver version 2.1.0.

Data Structure Documentation

struct ak4497_dsd_config_t

struct ak4497_pcm_config_t

struct ak4497_config_t

Data Fields
uint8_t	slaveAddress
	code device slave address

codec_i2c_config_t	i2cConfig
	i2c bus configuration

struct ak4497_handle_t

Data Fields
ak4497_config_t *	config
	ak4497 config pointer

uint8_t	i2cHandle [AK4497_I2C_HANDLER_SIZE]
	i2c handle

Macro Definition Documentation

#define AK4497_CONTROL1 (0x00)

#define AK4497_CONTROL1_RSTN_MASK (0x1U)

#define AK4497_I2C_ADDR (0x11)

Enumeration Type Documentation

enum ak4497_data_channel_mode_t

Enumerator
kAK4497_NormalMode	L-channel output L-channel data, R-channel output R-channel data.
kAK4497_ExchangeMode	L-channel output R-channel data, R-channel output L-channel data.

enum ak4497_dsd_input_path_t

Enumerator
kAK4497_Path0	Pin 16,17,19 used.
kAK4497_Path1	Pin 3,4,5 used.

enum ak4497_dsd_mclk_t

Enumerator
kAK4497_mclk512fs	MCLK equals 512fs.
kAK4497_mclk768fs	MCLK equals 768fs.

enum ak4497_dsd_dclk_t

Enumerator
kAK4497_dclk64fs	DCLK equals 64fs.
kAK4497_dclk128fs	DCLK equals 128fs.
kAK4497_dclk256fs	DCLK equals 256fs.
kAK4497_dclk512fs	DCLK equals 512fs.

enum ak4497_dsd_playback_path_t

Enumerator
kAK4497_NormalPath	Normal path mode.
kAK4497_VolumeBypass	Volume Bypass mode.

enum ak4497_dsd_dclk_polarity_t

Enumerator
kAK4497_FallingEdge	DSD data is output from DCLK falling edge.
kAK4497_RisingEdge	DSD data is output from DCLK rising edge.

enum ak4497_pcm_samplefreqmode_t

Enumerator
kAK4497_ManualSettingMode	Manual setting mode.
kAK4497_AutoSettingMode	Auto setting mode.
kAK4497_FsAutoDetectMode	Auto detect mode.

enum ak4497_pcm_samplefreqselect_t

Enumerator
kAK4497_NormalSpeed	8kHZ ~ 54kHZ
kAK4497_DoubleSpeed	54kHZ ~ 108kHZ
kAK4497_QuadSpeed	120kHZ ~ 216kHZ, note that value 3 also stands for Quad Speed Mode
kAK4497_OctSpeed	384kHZ, note that value 6 also stands for Oct Speed Mode
kAK4497_HexSpeed	768kHZ, note that value 7 also stands for Hex Speed Mode

enum ak4497_pcm_sdata_format_t

Enumerator
kAK4497_16BitLSB	16-bit LSB justified
kAK4497_20BitLSB	20-bit LSB justified
kAK4497_24BitMSB	24-bit MSB justified
kAK4497_16_24BitI2S	16 and 24-bit I2S compatible
kAK4497_24BitLSB	24-bit LSB justified
kAK4497_32BitLSB	32-bit LSB justified
kAK4497_32BitMSB	32-bit MSB justified
kAK4497_32BitI2S	32-bit I2S compatible

enum ak4497_pcm_tdm_mode_t

Enumerator
kAK4497_Normal	Normal mode.
kAK4497_TDM128	BCLK is fixed to 128fs.
kAK4497_TDM256	BCLK is fixed to 256fs.
kAK4497_TDM512	BCLK is fixed to 512fs.

enum ak4497_module_ctrl_cmd_t

Enumerator
kAK4497_ModuleSwitchI2SInInterface	module digital interface siwtch.

enum _ak4497_module_ctrl_i2s_in_interface

Enumerator
kAK4497_ModuleI2SInInterfacePCM	Pcm interface.
kAK4497_ModuleI2SInInterfaceDSD	DSD interface.

Function Documentation

void AK4497_DefaultConfig ( ak4497_config_t * config )

Parameters

config AK4497 configure structure.

status_t AK4497_Init	(	ak4497_handle_t *	handle,
		ak4497_config_t *	config
	)

Parameters

handle	AK4497 handle structure.
config	AK4497 configure structure.

status_t AK4497_SetEncoding	(	ak4497_handle_t *	handle,
		uint8_t	format
	)

This function would configure the codec playback mode.

Parameters

handle	AK4497 handle structure pointer.
format	info.

status_t AK4497_ConfigDataFormat	(	ak4497_handle_t *	handle,
		uint32_t	mclk,
		uint32_t	sampleRate,
		uint32_t	bitWidth
	)

This function would configure the registers about the sample rate, bit depths.

Parameters

handle	AK4497 handle structure pointer.
mclk	system clock of the codec which can be generated by MCLK or PLL output.
sampleRate	Sample rate of audio file running in AK4497.
bitWidth	Bit depth of audio file.

status_t AK4497_SetVolume	(	ak4497_handle_t *	handle,
		uint8_t	value
	)

This function would set the volume of AK4497 modules. Users need to appoint the module. The function assume that left channel and right channel has the same volume.

Parameters

handle	AK4497 handle structure.
value	Volume value need to be set.

status_t AK4497_GetVolume	(	ak4497_handle_t *	handle,
		uint8_t *	value
	)

This function gets the volume of AK4497. Users need to appoint the module. The function assume that left channel and right channel has the same volume.

Parameters

handle	AK4497 handle structure.
value	volume value

Returns: value value of the module.

status_t AK4497_ModuleControl	(	ak4497_handle_t *	handle,
		ak4497_module_ctrl_cmd_t	cmd,
		uint32_t	data
	)

Parameters

handle	AK4497 handle structure pointer.
cmd	module control command, support cmd kAK4497_ModuleSwitchDigitalInterface.
data	control data, support data kCODEC_ModuleDigitalInterfacePCM/kCODEC_ModuleDigitalInterfaceDSD.

status_t AK4497_Deinit ( ak4497_handle_t * handle )

This function close all modules in AK4497 to save power.

Parameters

handle AK4497 handle structure pointer.

status_t AK4497_WriteReg	(	ak4497_handle_t *	handle,
		uint8_t	reg,
		uint8_t	val
	)

Parameters

handle	AK4497 handle structure.
reg	The register address in AK4497.
val	Value needs to write into the register.

status_t AK4497_ReadReg	(	ak4497_handle_t *	handle,
		uint8_t	reg,
		uint8_t *	val
	)

Parameters

handle	AK4497 handle structure.
reg	The register address in AK4497.
val	Value written to.

status_t AK4497_ModifyReg	(	ak4497_handle_t *	handle,
		uint8_t	reg,
		uint8_t	mask,
		uint8_t	val
	)

Parameters

handle	AK4497 handle structure.
reg	The register address in AK4497.
mask	The mask code for the bits want to write. The bit you want to write should be 0.
val	Value needs to write into the register.

Overview

Modules

Data Structures

Macros

Enumerations

Functions

Driver version

Data Structure Documentation

Data Fields

Data Fields

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation