102 lines
1.8 KiB
C
102 lines
1.8 KiB
C
/** @file emif.h
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* @brief emif Driver Definition File
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* @date 29.May.2013
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* @version 03.05.02
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*
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*/
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/* (c) Texas Instruments 2009-2013, All rights reserved. */
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#ifndef _EMIF_H_
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#define _EMIF_H_
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#include "reg_emif.h"
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/** @enum emif_pins
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* @brief Alias for emif pins
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*
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*/
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enum emif_pins
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{
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emif_wait_pin0 = 0U,
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emif_wait_pin1 = 1U
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};
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/** @enum emif_size
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* @brief Alias for emif page size
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*
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*/
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enum emif_size
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{
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elements_256 = 0U,
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elements_512 = 1U,
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elements_1024 = 2U,
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elements_2048 = 3U
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};
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/** @enum emif_port
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* @brief Alias for emif port
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*
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*/
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enum emif_port
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{
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emif_8_bit_port = 0U,
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emif_16_bit_port = 1U
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};
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/** @enum emif_pagesize
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* @brief Alias for emif pagesize
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*
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*/
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enum emif_pagesize
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{
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emif_4_words = 0U,
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emif_8_words = 1U
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};
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/** @enum emif_wait_polarity
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* @brief Alias for emif wait polarity
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*
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*/
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enum emif_wait_polarity
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{
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emif_pin_low = 0U,
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emif_pin_high = 1U
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};
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#define PTR (uint32 *)(0x80000000U)
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/**
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* @defgroup EMIF EMIF
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* @brief Error Signaling Module.
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*
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* This EMIF memory controller is compliant with the JESD21-C SDR SDRAM memories utilizing a 16-bit
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* data bus. The purpose of this EMIF is to provide a means for the CPU to connect to a variety of external
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* devices including:
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* - Single data rate (SDR) SDRAM
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* - Asynchronous devices including NOR Flash and SRAM
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* The most common use for the EMIF is to interface with both a flash device and an SDRAM device
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* simultaneously. contains an example of operating the EMIF in this configuration.
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*
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* Related Files
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* - reg_emif.h
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* - emif.h
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* - emif.c
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* @addtogroup EMIF
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* @{
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*/
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/* EMIF Interface Functions */
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void emif_SDRAMInit(void);
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void emif_ASYNC1Init(void);
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void emif_ASYNC2Init(void);
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void emif_ASYNC3Init(void);
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/**@}*/
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#endif /*EMIF_H_*/
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