rt-thread-official/bsp/stm32/stm32f429-fire-challenger/board/ports/sdram_port.h

66 lines
2.4 KiB
C

/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-12-04 zylx The first version for STM32F4xx
*/
#ifndef __SDRAM_PORT_H__
#define __SDRAM_PORT_H__
/* parameters for sdram peripheral */
/* Bank1 or Bank2 */
#define SDRAM_TARGET_BANK 2
/* stm32f4 Bank1:0XC0000000 Bank2:0XD0000000 */
#define SDRAM_BANK_ADDR ((uint32_t)0XD0000000)
/* data width: 8, 16, 32 */
#define SDRAM_DATA_WIDTH 16
/* column bit numbers: 8, 9, 10, 11 */
#define SDRAM_COLUMN_BITS 8
/* row bit numbers: 11, 12, 13 */
#define SDRAM_ROW_BITS 12
/* cas latency clock number: 1, 2, 3 */
#define SDRAM_CAS_LATENCY 3
/* read pipe delay: 0, 1, 2 */
#define SDRAM_RPIPE_DELAY 1
/* clock divid: 2, 3 */
#define SDCLOCK_PERIOD 2
/* refresh rate counter */
#define SDRAM_REFRESH_COUNT ((uint32_t)0x056A)
#define SDRAM_SIZE ((uint32_t)0x800000)
/* Timing configuration for IS42S16400J */
/* 90 MHz of SD clock frequency (180MHz/2) */
/* TMRD: 2 Clock cycles */
#define LOADTOACTIVEDELAY 2
/* TXSR: 7x11.90ns */
#define EXITSELFREFRESHDELAY 7
/* TRAS: 4x11.90ns */
#define SELFREFRESHTIME 4
/* TRC: 7x11.90ns */
#define ROWCYCLEDELAY 7
/* TWR: 2 Clock cycles */
#define WRITERECOVERYTIME 2
/* TRP: 2x11.90ns */
#define RPDELAY 2
/* TRCD: 2x11.90ns */
#define RCDDELAY 2
/* memory mode register */
#define SDRAM_MODEREG_BURST_LENGTH_1 ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_LENGTH_2 ((uint16_t)0x0001)
#define SDRAM_MODEREG_BURST_LENGTH_4 ((uint16_t)0x0002)
#define SDRAM_MODEREG_BURST_LENGTH_8 ((uint16_t)0x0004)
#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED ((uint16_t)0x0008)
#define SDRAM_MODEREG_CAS_LATENCY_2 ((uint16_t)0x0020)
#define SDRAM_MODEREG_CAS_LATENCY_3 ((uint16_t)0x0030)
#define SDRAM_MODEREG_OPERATING_MODE_STANDARD ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE ((uint16_t)0x0200)
#endif