From 36d284602fd0836ef6c184da53e995ff0e0ce890 Mon Sep 17 00:00:00 2001 From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> Date: Sun, 30 May 2010 19:40:34 +0000 Subject: [PATCH] I2S register bit definitions git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2719 42af7a65-404d-4744-a932-0658087f49c3 --- arch/arm/src/lpc17xx/lpc17_i2s.h | 108 ++++++++++++++++++++++++------- 1 file changed, 85 insertions(+), 23 deletions(-) diff --git a/arch/arm/src/lpc17xx/lpc17_i2s.h b/arch/arm/src/lpc17xx/lpc17_i2s.h index 5c45028b2f..563212c453 100755 --- a/arch/arm/src/lpc17xx/lpc17_i2s.h +++ b/arch/arm/src/lpc17xx/lpc17_i2s.h @@ -86,33 +86,95 @@ /* Register bit definitions *********************************************************/ /* Digital Audio Output Register */ -#define I2S_DAO_ + +#define I2S_DAO_WDWID_SHIFT (0) /* Bits 0-1: Selects the number of bytes in data */ +#define I2S_DAO_WDWID_MASK (3 << I2S_DAO_WDWID_SHIFT) +# define I2S_DAO_WDWID_8BITS (0 << I2S_DAO_WDWID_SHIFT) +# define I2S_DAO_WDWID_16BITS (1 << I2S_DAO_WDWID_SHIFT) +# define I2S_DAO_WDWID_32BITS (2 << I2S_DAO_WDWID_SHIFT) +#define I2S_DAO_MONO (1 << 2) /* Bit 2: Mono format */ +#define I2S_DAO_STOP (1 << 3) /* Bit 3: Disable FIFOs / mute mode */ +#define I2S_DAO_RESET (1 << 4) /* Bit 4: Reset TX channel and FIFO */ +#define I2S_DAO_WSSEL (1 << 5) /* Bit 5: Slave mode select */ +#define I2S_DAO_WSHALFPER_SHIFT (6) /* Bits 6-14: Word select half period minus 1 */ +#define I2S_DAO_WSHALFPER_MASK (0x01ff << I2S_DAO_WSHALFPER_SHIFT) +#define I2S_DAO_MUTE (1 << 15) /* Bit 15: Send only zeros on channel */ + /* Bits 16-31: Reserved */ /* Digital Audio Input Register */ -#define I2S_DAI_ -/* Transmit FIFO */ -#define I2S_TXFIFO_ -/* Receive FIFO */ -#define I2S_RXFIFO_ + +#define I2S_DAI_WDWID_SHIFT (0) /* Bits 0-1: Selects the number of bytes in data */ +#define I2S_DAI_WDWID_MASK (3 << I2S_DAI_WDWID_SHIFT) +# define I2S_DAI_WDWID_8BITS (0 << I2S_DAI_WDWID_SHIFT) +# define I2S_DAI_WDWID_16BITS (1 << I2S_DAI_WDWID_SHIFT) +# define I2S_DAI_WDWID_32BITS (2 << I2S_DAI_WDWID_SHIFT) +#define I2S_DAI_MONO (1 << 2) /* Bit 2: Mono format */ +#define I2S_DAI_STOP (1 << 3) /* Bit 3: Disable FIFOs / mute mode */ +#define I2S_DAI_RESET (1 << 4) /* Bit 4: Reset TX channel and FIFO */ +#define I2S_DAI_WSSEL (1 << 5) /* Bit 5: Slave mode select */ +#define I2S_DAI_WSHALFPER_SHIFT (6) /* Bits 6-14: Word select half period minus 1 */ +#define I2S_DAI_WSHALFPER_MASK (0x01ff << I2S_DAI_WSHALFPER_SHIFT) + /* Bits 15-31: Reserved */ +/* Transmit FIFO: 8 � 32-bit transmit FIFO */ +/* Receive FIFO: 8 � 32-bit receive FIFO */ + /* Status Feedback Register */ -#define I2S_STATE_ -/* DMA Configuration Register 1 */ -#define I2S_DMA1_ -/* DMA Configuration Register 2 */ -#define I2S_DMA2_ + +#define I2S_STATE_IRQ (1 << 0) /* Bit 0: Receive Transmit Interrupt */ +#define I2S_STATE_DMAREQ1 (1 << 1) /* Bit 1: Receive or Transmit DMA Request 1 */ +#define I2S_STATE_DMAREQ2 (1 << 2) /* Bit 2: Receive or Transmit DMA Request 2 */ + /* Bits 3-7: Reserved */ +#define I2S_STATE_RXLEVEL_SHIFT (8) /* Bits 8-11: Current level of the Receive FIFO */ +#define I2S_STATE_RXLEVEL_MASK (15 << I2S_STATE_RXLEVEL_SHIFT) + /* Bits 12-15: Reserved */ +#define I2S_STATE_TXLEVEL_SHIFT (16) /* Bits 16-19: Current level of the Transmit FIFO */ +#define I2S_STATE_TXLEVEL_MASK (15 << I2S_STATE_TXLEVEL_SHIFT) + /* Bits 20-31: Reserved */ +/* DMA Configuration Register 1 and 2 */ + +#define I2S_DMA_RXDMAEN (1 << 0) /* Bit 0: Enable DMA1 for I2S receive */ +#define I2S_DMA_TXDMAEN (1 << 1) /* Bit 1: Enable DMA1 for I2S transmit */ + /* Bits 3-7: Reserved */ +#define I2S_DMA_RXDEPTH_SHIFT (8) /* Bits 8-11: FIFO level that triggers RX request on DMA1 */ +#define I2S_DMA_RXDEPTH_MASK (15 << I2S_DMA_RXDEPTH_SHIFT) + /* Bits 12-15: Reserved */ +#define I2S_DMA_TXDEPTH_SHIFT (16) /* Bits 16-19: FIFO level that triggers a TX request on DMA1 */ +#define I2S_DMA_TXDEPTH_MASK (15 << I2S_DMA_TXDEPTH_SHIFT) + /* Bits 20-31: Reserved */ /* Interrupt Request Control Register */ + #define I2S_IRQ_ -/* Transmit MCLK divider */ -#define I2S_TXRATE_ -/* Receive MCLK divider */ -#define I2S_RXRATE_ -/* Transmit bit rate divider */ -#define I2S_TXBITRATE_ -/* Receive bit rate divider */ -#define I2S_RXBITRATE_ -/* Transmit mode control */ -#define I2S_TXMODE_ -/* Receive mode control */ -#define I2S_RXMODE_ +#define I2S_IRQ_RXEN (1 << 0) /* Bit 0: Enable I2S receive interrupt */ +#define I2S_IRQ_TXEN (1 << 1) /* Bit 1: Enable I2S transmit interrupt */ + /* Bits 3-7: Reserved */ +#define I2S_IRQ_RXDEPTH_SHIFT (8) /* Bits 8-11: Set FIFO level for irq request */ +#define I2S_IRQ_RXDEPTH_MASK (15 << I2S_IRQ_RXDEPTH_SHIFT) + /* Bits 12-15: Reserved */ +#define I2S_IRQ_TXDEPTH_SHIFT (16) /* Bits 16-19: Set FIFO level for irq request */ +#define I2S_IRQ_TXDEPTH_MASK (15 << I2S_IRQ_TXDEPTH_SHIFT) + /* Bits 20-31: Reserved */ +/* Transmit and Receive MCLK divider */ + +#define I2S_RATE_YDIV_SHIFT (0) /* Bits 0-7: I2S transmit MCLK rate denominator */ +#define I2S_RATE_YDIV_MASK (0xff << I2S_RATE_YDIV_SHIFT) +#define I2S_RATE_XDIV_SHIFT (8) /* Bits 8-15: I2S transmit MCLK rate numerator */ +#define I2S_RATE_XDIV_MASK (0xff << I2S_RATE_XDIV_SHIFT) + /* Bits 16-31: Reserved */ + +/* Transmit and received bit rate divider */ + +#define I2S_BITRATE_SHIFT (0) /* Bits 0-5: I2S transmit bit rate */ +#define I2S_BITRATE_MASK (0x3f << I2S_BITRATE_SHIFT) + /* Bits 6-31: Reserved */ +/* Transmit and Receive mode control */ + +#define I2S_MODE_CLKSEL_SHIFT (0) /* Bits 0-1: Clock source for bit clock divider */ +#define I2S_MODE_CLKSEL_MASK (3 << I2S_MODE_CLKSEL_SHIFT) +# define I2S_MODE_CLKSEL_FRACDIV (0 << I2S_MODE_CLKSEL_SHIFT) /* TX/RX fractional rate divider */ +# define I2S_MODE_CLKSEL_RXMCLK (2 << I2S_MODE_CLKSEL_SHIFT) /* RX_CLCK for TX_MCLK source */ +# define I2S_MODE_CLKSEL_TXMCLK (2 << I2S_MODE_CLKSEL_SHIFT) /* TX_CLCK for RX_MCLK source */ +#define I2S_MODE_4PIN (1 << 2) /* Bit 2: Transmit/Receive 4-pin mode selection */ +#define I2S_MODE_MCENA (1 << 3) /* Bit 3: Enable for the TX/RX_MCLK output */ + /* Bits 4-31: Reserved */ /************************************************************************************ * Public Types -- GitLab