pxa255_i2s.h

老外的一个开源项目

// Copyright (c) David Vescovi.  All rights reserved.
// Part of Project DrumStix
// Windows Embedded Developers Interest Group (WE-DIG) community project.
// http://www.we-dig.org
// Copyright (c) Microsoft Corporation.  All rights reserved.
//------------------------------------------------------------------------------
//
//  Header: pxa255_i2s.h
//
//  Defines the i2s controler register layout and associated types and constants.
//
//------------------------------------------------------------------------------
#ifndef _PXA255_I2S_H_
#define _PXA255_I2S_H_

#if __cplusplus
extern "C" {
#endif

//------------------------------------------------------------------------------
//
//  Type:  I2S_REG_T
//
//  Defines the control register layout.
//
//------------------------------------------------------------------------------

typedef struct
{
	VUINT32_T	SACR0;		//serial audio global control register
	VUINT32_T	SACR1;		//I2S/MSB justified control register
	VUINT32_T	SASR0;		//I2S/MSB justified interface and fifo status register
	VUINT32_T	SAIMR;		//intrerupt mask register
	VUINT32_T	SAICR;		//interrupt clear register
	VUINT32_T	RSVD0[16];
	VUINT32_T	SAITR;		//interrupt test register
	VUINT32_T	SADIV;		//clock divider register
	VUINT32_T	RSVD1[7];
	VUINT32_T	SADR;		//data register
} I2S_REGS_T, *PI2S_REGS_T;


//
// SACR0 Bits
//
#define	SACR0_ENB				0x00000001
#define	SACR0_BCKD				0x00000004
#define	SACR0_RST				0x00000008
#define	SACR0_EFWR				0x00000010
#define	SACR0_STRF				0x00000020

//
// SACR1 Bits
//
#define	SACR1_AMSL				0x00000001
#define SACR1_DREC				0x00000008
#define SACR1_DRPL				0x00000010
#define SACR1_ENLBF		        0x00000020

//
// SASR0 Bits
//
#define SASR0_TNF				0x00000001
#define SASR0_RNE				0x00000002
#define SASR0_BSY				0x00000004
#define SASR0_TFS				0x00000008
#define SASR0_RFS				0x00000010
#define SASR0_TUR				0x00000020
#define SASR0_ROR				0x00000040

//
// SAIMR Bits
//
#define SAIMR_TFS				0x00000008
#define SAIMR_RFS				0x00000010
#define SAIMR_TUR				0x00000020
#define SAIMR_ROR				0x00000040

//
// SAICR Bits
//
#define SAICR_TUR				0x00000020
#define SAICR_ROR				0x00000040

#if __cplusplus
}
#endif

#endif