RTEMS 6.1-rc4
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Files | Data Structures

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.