I2S Support

I2S support. More...

Files
file	lpc-i2s.h
	I2S API.

Data Structures
struct	lpc_i2s
	I2S control block. More...

I2S Digital Audio Input and Output
#define	I2S_DAIO_WORDWIDTH(val)   BSP_FLD32(val, 0, 1)
#define	I2S_DAIO_MONO   BSP_BIT32(2)
#define	I2S_DAIO_STOP   BSP_BIT32(3)
#define	I2S_DAIO_RESET   BSP_BIT32(4)
#define	I2S_DAIO_WS_SEL   BSP_BIT32(5)
#define	I2S_DAIO_WS_HALFPERIOD(val)   BSP_FLD32(val, 6, 14)
#define	I2S_DAIO_MUTE   BSP_BIT32(15)

I2S Status Feedback
#define	I2S_STATE_IRQ   BSP_BIT32(0)
#define	I2S_STATE_DMAREQ_0   BSP_BIT32(1)
#define	I2S_STATE_DMAREQ_1   BSP_BIT32(2)
#define	I2S_STATE_RX_LEVEL_GET(reg)   BSP_FLD32GET(reg, 8, 11)
#define	I2S_STATE_TX_LEVEL_GET(reg)   BSP_FLD32GET(reg, 16, 19)

I2S DMA Configuration
#define	I2S_DMA_RX_ENABLE   BSP_BIT32(0)
#define	I2S_DMA_TX_ENABLE   BSP_BIT32(1)
#define	I2S_DMA_RX_DEPTH(val)   BSP_FLD32(val, 8, 11)
#define	I2S_DMA_TX_DEPTH(val)   BSP_FLD32(val, 16, 19)

I2S Interrupt Request Control
#define	I2S_IRQ_RX   BSP_BIT32(0)
#define	I2S_IRQ_TX   BSP_BIT32(1)
#define	I2S_IRQ_RX_DEPTH(val)   BSP_FLD32(val, 8, 11)
#define	I2S_IRQ_TX_DEPTH(val)   BSP_FLD32(val, 16, 19)

I2S Transmit and Receive Clock Rate
#define	LPC24XX_I2S_RATE(val)   BSP_FLD32(val, 0, 9)
#define	LPC32XX_I2S_RATE_X_DIVIDER(val)   BSP_FLD32(val, 0, 7)
#define	LPC32XX_I2S_RATE_Y_DIVIDER(val)   BSP_FLD32(val, 8, 15)

Detailed Description

I2S support.