I2S Functions

Functions
void	RDA5807::setI2SAllParameters (uint8_t R_DELY, uint8_t L_DELY, uint8_t SCLK_O_EDGE, uint8_t SW_O_EDGE, uint8_t I2S_SW_CNT, uint8_t WS_I_EDGE, uint8_t DATA_SIGNED, uint8_t SCLK_I_EDGE, uint8_t WS_LR, uint8_t SLAVE_MASTER, uint8_t OPEN_MODE)
	Configures all parameters for I2S.
void	RDA5807::setI2SOn (bool value)
	Enables I2S setup.
void	RDA5807::setI2SMaster (bool value)
void	RDA5807::setI2SSpeed (uint8_t value)
	Sets the speed in kbps. You can use the predefined constantes: I2S_WS_STEP_48, I2S_WS_STEP_44_1, I2S_WS_STEP_32,.
void	RDA5807::setI2SDataSigned (bool value)
	If 0, I2S output unsigned 16-bit audio data. If 1, I2S output signed 16-bit audio data.

Detailed Description

I2S

When setting I2S_ENABLE (register 04) bit is high, the RDA5807FP can get the output signals SCK, WS, SD signals from GPIO3, GPIO1 and GPIO2 (I2S master)

Function Documentation

setI2SAllParameters()

void RDA5807::setI2SAllParameters	(	uint8_t	R_DELY,
		uint8_t	L_DELY,
		uint8_t	SCLK_O_EDGE,
		uint8_t	SW_O_EDGE,
		uint8_t	I2S_SW_CNT,
		uint8_t	WS_I_EDGE,
		uint8_t	DATA_SIGNED,
		uint8_t	SCLK_I_EDGE,
		uint8_t	WS_LR,
		uint8_t	SLAVE_MASTER,
		uint8_t	OPEN_MODE
	)

Configures all parameters for I2S.

I2S setup must be enabled

I2S_SW_CNT can be: I2S_WS_STEP_48, I2S_WS_STEP_44_1, I2S_WS_STEP_32, I2S_WS_STEP_24, I2S_WS_STEP_22_05, I2S_WS_STEP_16, I2S_WS_STEP_12, I2S_WS_STEP_11_025 or I2S_WS_STEP_8

Parameters

R_DELY	If 1, R channel data delay 1T
L_DELY	If 1, L channel data delay 1T
SCLK_O_EDGE	If 1, invert sclk output when as master
SW_O_EDGE	If 1, invert ws output when as master
I2S_SW_CNT	Only valid in master mode. See table above
WS_I_EDGE	If 0, use normal ws internally; If 1, inverte ws internally
DATA_SIGNED	If 0, I2S output unsigned 16-bit audio data. If 1, I2S output signed 16-bit audio data.
SCLK_I_EDGE	If 0, use normal sclk internally;If 1, inverte sclk internally
WS_LR	Ws relation to l/r channel; If 0, ws=0 ->r, ws=1 ->l; If 1, ws=0 ->l, ws=1 ->r
SLAVE_MASTER	I2S slave or master; 1 = slave; 0 = master
OPEN_MODE	Open reserved register mode; 11=open behind registers writing function others: only open behind registers reading function

See also

RDA microelectronics RDA5807FP - SINGLE-CHIP BROADCAST FM RADIO TUNER pages 11 and 12

setI2SOn

setI2SDataSigned()

void RDA5807::setI2SDataSigned

(

bool

value

)

If 0, I2S output unsigned 16-bit audio data. If 1, I2S output signed 16-bit audio data.

Parameters

value

true (1) or false (0)

setI2SMaster()

void RDA5807::setI2SMaster

(

bool

value

)

Parameters

value

true or false

setI2SOn()

void RDA5807::setI2SOn

(

bool

value

)

Enables I2S setup.

When setting I2S_ENABLE (register 04) bit is high, the RDA5807FP you can get the output signals SCK, WS, SD signals from GPIO3, GPIO1 and GPIO2 (I2S master)

Parameters

value

true or false

setI2SSpeed()

void RDA5807::setI2SSpeed

(

uint8_t

value

)

Sets the speed in kbps. You can use the predefined constantes: I2S_WS_STEP_48, I2S_WS_STEP_44_1, I2S_WS_STEP_32,.

/

I2S_WS_STEP_24, I2S_WS_STEP_22_05, I2S_WS_STEP_16, I2S_WS_STEP_12, I2S_WS_STEP_11_025 or I2S_WS_STEP_8

Parameters

value

value