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/**
* @file
*
* @ingroup RTEMSBSPsARMLPC24XX
*
* @brief BSP start EMC static memory configuration.
*/
/*
* Copyright (c) 2011 embedded brains GmbH. All rights reserved.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <bsp/start-config.h>
#include <bsp/lpc24xx.h>
BSP_START_DATA_SECTION const lpc24xx_emc_static_chip_config
lpc24xx_start_config_emc_static_chip [] = {
#if defined(LPC24XX_EMC_M29W160E)
/*
* Static Memory 1: Numonyx M29W160EB
*
* 1 clock cycle = 1/72MHz = 13.9ns
*/
{
.chip_select = (volatile lpc_emc_static *) EMC_STA_BASE_1,
.config = {
/*
* 16 bit, page mode disabled, active LOW chip select, extended wait
* disabled, writes not protected, byte lane state LOW/LOW (!).
*/
.config = 0x81,
/* 1 clock cycles delay from the chip select 1 to the write enable */
.waitwen = 0,
/*
* 0 clock cycles delay from the chip select 1 or address change
* (whichever is later) to the output enable
*/
.waitoen = 0,
/* 7 clock cycles delay from the chip select 1 to the read access */
.waitrd = 0x6,
/*
* 32 clock cycles delay for asynchronous page mode sequential accesses
*/
.waitpage = 0x1f,
/* 5 clock cycles delay from the chip select 1 to the write access */
.waitwr = 0x3,
/* 16 bus turnaround cycles */
.waitrun = 0xf
}
}
#elif defined(LPC24XX_EMC_M29W320E70)
/* Static Memory 0: M29W320E70 */
{
.chip_select = (volatile lpc_emc_static *) EMC_STA_BASE_0,
.config = {
/*
* 16 bit, page mode disabled, active LOW chip select, extended wait
* disabled, writes not protected, byte lane state LOW/LOW.
*/
.config = 0x81,
/* 30ns (tWHWL) */
.waitwen = LPC24XX_PS_TO_EMCCLK(30000, 1),
/* 0ns */
.waitoen = LPC24XX_PS_TO_EMCCLK(0, 1),
/* 70ns (tAVQV, tELQV) */
.waitrd = LPC24XX_PS_TO_EMCCLK(70000, 1),
/* 70ns (tAVQV, tELQV) */
.waitpage = LPC24XX_PS_TO_EMCCLK(70000, 1),
/* max(30ns (tWHWL) + 45ns (tWLWH), 70ns (tAVAV)) */
.waitwr = LPC24XX_PS_TO_EMCCLK(75000, 2),
/* 25ns (tEHQZ) */
.waitrun = LPC24XX_PS_TO_EMCCLK(25000, 1)
}
}
#elif defined(LPC24XX_EMC_SST39VF3201)
/* Static Memory 0: SST39VF3201 */
{
.chip_select = (volatile lpc_emc_static *) EMC_STA_BASE_0,
.config = {
/*
* 16 bit, page mode disabled, active LOW chip select, extended wait
* disabled, writes not protected, byte lane state LOW/LOW.
*/
.config = 0x81,
/* 0ns (tCS, tAS) */
.waitwen = LPC24XX_PS_TO_EMCCLK(0, 1),
/* 0ns (tOES) */
.waitoen = LPC24XX_PS_TO_EMCCLK(0, 1),
/* 70ns (tRC) */
.waitrd = LPC24XX_PS_TO_EMCCLK(70000, 1),
/* 70ns (tRC) */
.waitpage = LPC24XX_PS_TO_EMCCLK(70000, 1),
/* 20ns (tCHZ, TOHZ) */
.waitwr = LPC24XX_PS_TO_EMCCLK(20000, 2),
/* 20ns (tCHZ, TOHZ) */
.waitrun = LPC24XX_PS_TO_EMCCLK(20000, 1)
}
}
#endif
};
BSP_START_DATA_SECTION const size_t
lpc24xx_start_config_emc_static_chip_count =
sizeof(lpc24xx_start_config_emc_static_chip)
/ sizeof(lpc24xx_start_config_emc_static_chip [0]);
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