i2c.h

MIPS下的boottloader yamon 的源代码

/************************************************************************
 *
 *  i2c.h
 *
 *  Definitions for I2C protocol
 *
 *
 * ######################################################################
 *
 * Copyright (c) 1999-2000 MIPS Technologies, Inc. All rights reserved. 
 * 
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 * America. 
 * 
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 ************************************************************************/


#ifndef I2C_H
#define I2C_H


/************************************************************************
 *  Include files
 ************************************************************************/

#include <sysdefs.h>

/************************************************************************
 *  Register offset addresses and access types
*************************************************************************/

/************************************************************************
 *  Register encodings
*************************************************************************/

#define I2C_WRITE_BIT		0
#define I2C_READ_BIT		1

#define I2C_ACK_BIT		0
#define I2C_NACK_BIT		1

#define MAX_I2C_FREQ_KHZ	1700

#endif /* #ifndef I2C_H */