sys_init.c

开发环境ADSP6++,EBF_561开发板所有源代码

#include "../CPLD.h"

void Init_SDRAM(void)
{

	//SDRAM Refresh Rate Control Register
	*pEBIU_SDRRC = 0x00000817;	

	//SDRAM Memory Bank Control Register
	*pEBIU_SDBCTL = 0x00000015;

	//SDRAM Memory Global Control Register	
	*pEBIU_SDGCTL = 0x0091998d;
	ssync();
	csync();	
														
		

}//end Init_SDRAM

void Init_EBIU(void)
{
	
	*pEBIU_AMBCTL0	= 0x7bb07bb0;	// <--|Write access time = 7 cycles, read access time = 11 cycles, no ARDY
	*pEBIU_AMBCTL1	= 0x7bb07bb0;	//    |Hold time = 2 cycles, setup time = 3 cycles, transition time = 4 cycles
	*pEBIU_AMGCTL	= 0x00fF;		//	  |Enable all memory banks

}//end Init_EBIU

void Sys_Init()
{
      Init_EBIU();
      Init_SDRAM();
	  //Delay(100);



}