Overview

Data Structures
struct	cs42448_audio_format_t
	cs42448 audio format More...

struct	cs42448_config_t
	Initialize structure of CS42448. More...

struct	cs42448_handle_t
	cs42448 handler More...

Macros
#define	CS42448_I2C_HANDLER_SIZE CODEC_I2C_MASTER_HANDLER_SIZE
	CS42448 handle size.

#define	CS42448_ID 0x01U
	Define the register address of CS42448. More...

#define	CS42448_AOUT_MAX_VOLUME_VALUE 0xFFU
	CS42448 volume setting range.

#define	CS42448_CACHEREGNUM 28U
	Cache register number.

#define	CS42448_I2C_ADDR 0x48U
	CS42448 I2C address. More...

#define	CS42448_I2C_BITRATE (100000U)
	CS42448 I2C baudrate.

Typedefs
typedef void(*	cs42448_reset )(bool state)
	cs42448 reset function pointer

Enumerations
enum	cs42448_func_mode { kCS42448_ModeMasterSSM = 0x0, kCS42448_ModeMasterDSM = 0x1, kCS42448_ModeMasterQSM = 0x2, kCS42448_ModeSlave = 0x3 }
	CS42448 support modes. More...

enum	cs42448_module_t { kCS42448_ModuleDACPair1 = 0x2, kCS42448_ModuleDACPair2 = 0x4, kCS42448_ModuleDACPair3 = 0x8, kCS42448_ModuleDACPair4 = 0x10, kCS42448_ModuleADCPair1 = 0x20, kCS42448_ModuleADCPair2 = 0x40 }
	Modules in CS42448 board. More...

enum	cs42448_bus_t { kCS42448_BusLeftJustified = 0x0, kCS42448_BusI2S = 0x1, kCS42448_BusRightJustified = 0x2, kCS42448_BusOL1 = 0x4, kCS42448_BusOL2 = 0x5, kCS42448_BusTDM = 0x6 }
	CS42448 supported audio bus type. More...

enum	{ kCS42448_AOUT1 = 1U, kCS42448_AOUT2 = 2U, kCS42448_AOUT3 = 3U, kCS42448_AOUT4 = 4U, kCS42448_AOUT5 = 5U, kCS42448_AOUT6 = 6U, kCS42448_AOUT7 = 7U, kCS42448_AOUT8 = 8U }
	CS424488 play channel. More...

Functions
status_t	CS42448_Init (cs42448_handle_t handle, cs42448_config_t config)
	CS42448 initialize function. More...

status_t	CS42448_Deinit (cs42448_handle_t *handle)
	Deinit the CS42448 codec. More...

status_t	CS42448_SetProtocol (cs42448_handle_t *handle, cs42448_bus_t protocol, uint32_t bitWidth)
	Set the audio transfer protocol. More...

void	CS42448_SetFuncMode (cs42448_handle_t *handle, cs42448_func_mode mode)
	Set CS42448 to differernt working mode. More...

status_t	CS42448_SelectFunctionalMode (cs42448_handle_t *handle, cs42448_func_mode adcMode, cs42448_func_mode dacMode)
	Set CS42448 to differernt functional mode. More...

status_t	CS42448_SetAOUTVolume (cs42448_handle_t *handle, uint8_t channel, uint8_t volume)
	Set the volume of different modules in CS42448. More...

status_t	CS42448_SetAINVolume (cs42448_handle_t *handle, uint8_t channel, uint8_t volume)
	Set the volume of different modules in CS42448. More...

uint8_t	CS42448_GetAOUTVolume (cs42448_handle_t *handle, uint8_t channel)
	Get the volume of different AOUT channel in CS42448. More...

uint8_t	CS42448_GetAINVolume (cs42448_handle_t *handle, uint8_t channel)
	Get the volume of different AIN channel in CS42448. More...

status_t	CS42448_SetMute (cs42448_handle_t *handle, uint8_t channelMask)
	Mute modules in CS42448. More...

status_t	CS42448_SetChannelMute (cs42448_handle_t *handle, uint8_t channel, bool isMute)
	Mute channel modules in CS42448. More...

status_t	CS42448_SetModule (cs42448_handle_t *handle, cs42448_module_t module, bool isEnabled)
	Enable/disable expected devices. More...

status_t	CS42448_ConfigDataFormat (cs42448_handle_t *handle, uint32_t mclk, uint32_t sample_rate, uint32_t bits)
	Configure the data format of audio data. More...

status_t	CS42448_WriteReg (cs42448_handle_t *handle, uint8_t reg, uint8_t val)
	Write register to CS42448 using I2C. More...

status_t	CS42448_ReadReg (cs42448_handle_t handle, uint8_t reg, uint8_t val)
	Read register from CS42448 using I2C. More...

status_t	CS42448_ModifyReg (cs42448_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_CS42448_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
	cs42448 driver version 2.0.0. More...

Data Structure Documentation

struct cs42448_audio_format_t

Data Fields
uint32_t	mclk_HZ
	master clock frequency

uint32_t	sampleRate
	sample rate

uint32_t	bitWidth
	bit width

struct cs42448_config_t

Data Fields
cs42448_bus_t	bus
	Audio transfer protocol.

cs42448_audio_format_t	format
	cs42448 audio format

cs42448_func_mode	ADCMode
	CS42448 ADC function mode. More...

cs42448_func_mode	DACMode
	CS42448 DAC function mode. More...

bool	master
	true is master, false is slave

codec_i2c_config_t	i2cConfig
	i2c bus configuration

uint8_t	slaveAddress
	slave address

cs42448_reset	reset
	reset function pointer

Field Documentation

cs42448_func_mode cs42448_config_t::ADCMode

cs42448_func_mode cs42448_config_t::DACMode

struct cs42448_handle_t

Data Fields
cs42448_config_t *	config
	cs42448 config pointer

uint8_t	i2cHandle [CS42448_I2C_HANDLER_SIZE]
	i2c handle pointer

Macro Definition Documentation

#define FSL_CS42448_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))

#define CS42448_ID 0x01U

#define CS42448_I2C_ADDR 0x48U

Enumeration Type Documentation

enum cs42448_func_mode

Enumerator
kCS42448_ModeMasterSSM	master single speed mode
kCS42448_ModeMasterDSM	master dual speed mode
kCS42448_ModeMasterQSM	master quad speed mode
kCS42448_ModeSlave	master single speed mode

enum cs42448_module_t

Enumerator
kCS42448_ModuleDACPair1	DAC pair1 (AOUT1 and AOUT2) module in CS42448.
kCS42448_ModuleDACPair2	DAC pair2 (AOUT3 and AOUT4) module in CS42448.
kCS42448_ModuleDACPair3	DAC pair3 (AOUT5 and AOUT6) module in CS42448.
kCS42448_ModuleDACPair4	DAC pair4 (AOUT7 and AOUT8) module in CS42448.
kCS42448_ModuleADCPair1	ADC pair1 (AIN1 and AIN2) module in CS42448.
kCS42448_ModuleADCPair2	ADC pair2 (AIN3 and AIN4) module in CS42448.

enum cs42448_bus_t

Enumerator
kCS42448_BusLeftJustified	Left justified format, up to 24 bits.
kCS42448_BusI2S	I2S format, up to 24 bits.
kCS42448_BusRightJustified	Right justified, can support 16bits and 24 bits.
kCS42448_BusOL1	One-Line #1 mode.
kCS42448_BusOL2	One-Line #2 mode.
kCS42448_BusTDM	TDM mode.

anonymous enum

Enumerator
kCS42448_AOUT1	aout1
kCS42448_AOUT2	aout2
kCS42448_AOUT3	aout3
kCS42448_AOUT4	aout4
kCS42448_AOUT5	aout5
kCS42448_AOUT6	aout6
kCS42448_AOUT7	aout7
kCS42448_AOUT8	aout8

Function Documentation

status_t CS42448_Init	(	cs42448_handle_t *	handle,
		cs42448_config_t *	config
	)

The second parameter is NULL to CS42448 in this version. If users want to change the settings, they have to use cs42448_write_reg() or cs42448_modify_reg() to set the register value of CS42448. Note: If the codec_config is NULL, it would initialize CS42448 using default settings. The default setting: codec_config->bus = kCS42448_BusI2S codec_config->ADCmode = kCS42448_ModeSlave codec_config->DACmode = kCS42448_ModeSlave

Parameters

handle	CS42448 handle structure.
config	CS42448 configuration structure.

status_t CS42448_Deinit ( cs42448_handle_t * handle )

This function close all modules in CS42448 to save power.

Parameters

handle CS42448 handle structure pointer.

status_t CS42448_SetProtocol	(	cs42448_handle_t *	handle,
		cs42448_bus_t	protocol,
		uint32_t	bitWidth
	)

CS42448 only supports I2S, left justified, right justified, PCM A, PCM B format.

Parameters

handle	CS42448 handle structure.
protocol	Audio data transfer protocol.
bitWidth	bit width

void CS42448_SetFuncMode	(	cs42448_handle_t *	handle,
		cs42448_func_mode	mode
	)

Deprecated:: api, Do not use it anymore. It has been superceded by CS42448_SelectFunctionalMode.

Parameters

handle	CS42448 handle structure.
mode	differenht working mode of CS42448.

status_t CS42448_SelectFunctionalMode	(	cs42448_handle_t *	handle,
		cs42448_func_mode	adcMode,
		cs42448_func_mode	dacMode
	)

Parameters

handle	CS42448 handle structure.
adcMode	differenht working mode of CS42448.
dacMode	differenht working mode of CS42448.

status_t CS42448_SetAOUTVolume	(	cs42448_handle_t *	handle,
		uint8_t	channel,
		uint8_t	volume
	)

This function would set the volume of CS42448 modules. Uses need to appoint the module. The function assume that left channel and right channel has the same volume.

Parameters

handle	CS42448 handle structure.
channel	AOUT channel, it shall be 1~8.
volume	Volume value need to be set.

status_t CS42448_SetAINVolume	(	cs42448_handle_t *	handle,
		uint8_t	channel,
		uint8_t	volume
	)

This function would set the volume of CS42448 modules. Uses need to appoint the module. The function assume that left channel and right channel has the same volume.

Parameters

handle	CS42448 handle structure.
channel	AIN channel, it shall be 1~4.
volume	Volume value need to be set.

uint8_t CS42448_GetAOUTVolume	(	cs42448_handle_t *	handle,
		uint8_t	channel
	)

This function gets the volume of CS42448 modules. Uses need to appoint the module. The function assume that left channel and right channel has the same volume.

Parameters

handle	CS42448 handle structure.
channel	AOUT channel, it shall be 1~8.

uint8_t CS42448_GetAINVolume	(	cs42448_handle_t *	handle,
		uint8_t	channel
	)

This function gets the volume of CS42448 modules. Uses need to appoint the module. The function assume that left channel and right channel has the same volume.

Parameters

handle	CS42448 handle structure.
channel	AIN channel, it shall be 1~4.

status_t CS42448_SetMute	(	cs42448_handle_t *	handle,
		uint8_t	channelMask
	)

Parameters

handle	CS42448 handle structure.
channelMask	Channel mask for mute. Mute channel 0, it shall be 0x1, while mute channel 0 and 1, it shall be 0x3. Mute all channel, it shall be 0xFF. Each bit represent one channel, 1 means mute, 0 means unmute.

status_t CS42448_SetChannelMute	(	cs42448_handle_t *	handle,
		uint8_t	channel,
		bool	isMute
	)

Parameters

handle	CS42448 handle structure.
channel	reference _cs42448_play_channel.
isMute	true is mute, falase is unmute.

status_t CS42448_SetModule	(	cs42448_handle_t *	handle,
		cs42448_module_t	module,
		bool	isEnabled
	)

Parameters

handle	CS42448 handle structure.
module	Module expected to enable.
isEnabled	Enable or disable moudles.

status_t CS42448_ConfigDataFormat	(	cs42448_handle_t *	handle,
		uint32_t	mclk,
		uint32_t	sample_rate,
		uint32_t	bits
	)

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

Parameters

handle	CS42448 handle structure pointer.
mclk	Master clock frequency of I2S.
sample_rate	Sample rate of audio file running in CS42448. CS42448 now supports 8k, 11.025k, 12k, 16k, 22.05k, 24k, 32k, 44.1k, 48k and 96k sample rate.
bits	Bit depth of audio file (CS42448 only supports 16bit, 20bit, 24bit and 32 bit in HW).

status_t CS42448_WriteReg	(	cs42448_handle_t *	handle,
		uint8_t	reg,
		uint8_t	val
	)

Parameters

handle	CS42448 handle structure.
reg	The register address in CS42448.
val	Value needs to write into the register.

status_t CS42448_ReadReg	(	cs42448_handle_t *	handle,
		uint8_t	reg,
		uint8_t *	val
	)

Parameters

handle	CS42448 handle structure.
reg	The register address in CS42448.
val	Value written to.

status_t CS42448_ModifyReg	(	cs42448_handle_t *	handle,
		uint8_t	reg,
		uint8_t	mask,
		uint8_t	val
	)

Parameters

handle	CS42448 handle structure.
reg	The register address in CS42448.
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

Data Structures

Macros

Typedefs

Enumerations

Functions

Driver version

Data Structure Documentation

Data Fields

Data Fields

Field Documentation

Data Fields

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation