rt-thread-official/bsp/CME_M7/StdPeriph_Driver/inc/cmem7_ddr.h

/**
	*****************************************************************************
	* @file     cmem7_ddr.h
	*
	* @brief    CMEM7 AES header file
	*
	*
	* @version  V1.0
	* @date     3. September 2013
	*
	* @note               
	*           
	*****************************************************************************
	* @attention
	*
	* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
	* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
	* TIME. AS A RESULT, CAPITAL-MICRO SHALL NOT BE HELD LIABLE FOR ANY DIRECT, 
	* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
	* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
	* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
	*
	* <h2><center>&copy; COPYRIGHT 2013 Capital-micro </center></h2>
	*****************************************************************************
	*/
	
#ifndef __CMEM7_DDR_H
#define __CMEM7_DDR_H

#ifdef __cplusplus
 extern "C" {
#endif

#include "cmem7.h"
#include "cmem7_conf.h"
/** @defgroup _MEM_TYPE
  * @{
  */
enum _MEM_TYPE 
{
	MEM_DDR2=1,
	MEM_DDR3		
} ;	
/**
  * @}
  */

/** @defgroup _BUS_WIDTH
  * @{
  */
enum _BUS_WIDTH
{
	BUS_WIDTH_8,
	BUS_WIDTH_16,
	BUS_WIDTH_MAX
};
/**
  * @}
  */
/** @defgroup _CHIP_TYPE
  * @{
  */  
enum _CHIP_TYPE
{
	_32Mbx8,
	_64Mbx8,
	_128Mbx8,
	_256Mbx8,
	_512Mbx8,
	_16Mbx16,
	_32Mbx16,
	_64Mbx16,
	_128Mbx16,
	_256Mbx16,
	_512Mbx16,
	CHIP_TYPE_MAX
};
/**
  * @}
  */

/** @defgroup _CHIP_NUM
  * @{
  */  
enum _CHIP_NUM
{
	CHIP_NUM_x1,
	CHIP_NUM_x2,
	CHIP_NUM_MAX
};
/**
  * @}
  */
  
/** @defgroup MEM_CHIP_INFO
  * @{
  */
typedef struct {
	uint8_t mem_type;     /*!< ddr type @ref _MEM_TYPE*/
	uint8_t Bus_width;	/*!< ddr qs bus width @ref _BUS_WIDTH*/
	uint8_t Chip_type;	/*!< chip type @ref _CHIP_TYPE*/
	uint8_t Chip_num;	/*!< chip number @ref _CHIP_NUM*/
	uint8_t Chip_bank;      /*!< chip bank number*/		
} MEM_CHIP_INFO;								
/**
  * @}
  */


/** @defgroup DDR2MEM
  * @{
  */
typedef struct {
	uint32_t tCK;       		/*!< Period of clock(ps), not data period */ 
	uint32_t tCL;						/*!< tCL */
	uint32_t tRCD;						/*!< tRCD */
	uint32_t tRP;						/*!< tRP */
	uint32_t tRC;						/*!< tRC */
	uint32_t tRAS;						/*!< tRAS */
	uint32_t tWR;						/*!< tWR */
	uint32_t tRRD;						/*!< tRRD */
	uint32_t tWTR;						/*!< tWTR */
	uint32_t tRTP;						/*!< tRTP */
	uint32_t tFAW;						/*!< tFAW */
} DDR2MEM;								/*!< DDR2ʱ<32><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
/**
  * @}
  */

/** @defgroup DDR3MEM
  * @{
  */
typedef struct {
	uint32_t tCK;       		/*!< Period of clock(ps), not data period */ 
	uint32_t tCL;						/*!< tCL */
	uint32_t tWCL;						/*!< tWCL */
	uint32_t tRCD;						/*!< tRCD */
	uint32_t tRAS;						/*!< tRAS */
	uint32_t tRP;						/*!< tRP */
	uint32_t tRC;						/*!< tRC */
	uint32_t tRRD;						/*!< tRRD */
	uint32_t tFAW;						/*!< tFAW */
	uint32_t tWR;						/*!< tWR */
	uint32_t tRTP;						/*!< tRTP */
	uint32_t tZQoper;					/*!< tZQCL */
	uint32_t tZQCS;						/*!< tZQCS */
} DDR3MEM;								/*!< DDR3ʱ<33><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
/**
  * @}
  */

/** @defgroup DDR2PREDEF
  * @{
  */
extern const DDR2MEM DDR2PREDEF[];		/*!< Pre-defined DDR2 Timing in library */
#define DDR2_400C			0			/*!< sg5E: DDR2-400C CL=4, tCK=5000ps */

/**
  * @}
  */

/** @defgroup DDR3PREDEF
  * @{
  */
extern const DDR3MEM DDR3PREDEF[];		/*!< Pre-defined DDR3 Timing in library */
#define DDR3_400		  	0
#define DDR3_667        1

/**
  * @}
  */

/**
 * @brief DDR Timing Configuration
   * @param[in] chip information ,A pointer to struct @ref MEM_CHIP_INFO
   * @param[in] ddr A pointer to struct @ref DDR2MEM or @ref DDR3MEM that specified DDR Timing. Some typital DDR2/3 Timings are defined in arrays @ref DDR2PREDEF and @ref DDR3PREDEF.
 * @retval void
   */
BOOL  DDR_Init(const MEM_CHIP_INFO *chip_info, const void *ddr);
#ifdef __cplusplus
}
#endif

#endif /* __CMEM7_DDR_H */