ebiu.c

来自「bf533平台图像采集程序」· C语言 代码 · 共 56 行

#include <cdefBF533.h>
#include <ccblkfn.h>

//Setup of the async interface
void Init_EBIU() 
{
	if (*pEBIU_SDSTAT & SDRS) 
	{
		//SDRAM Refresh Rate Control Register
		*pEBIU_SDRRC = 0x00000817;	
	
		//SDRAM Memory Bank Control Register
		*pEBIU_SDBCTL = 0x00000013;
	
		//SDRAM Memory Global Control Register	
		*pEBIU_SDGCTL = 0x0091998d;	
	
		ssync();
	}
	
	*pEBIU_AMBCTL0	= 0x7bb07bb0;	// <--|Write access time = 7 cycles, read access time = 11 cycles, no ARDY
	
	//ams3->ads8364 
	//setup 0ns, read 60ns, hold 10ns
	//1 cycle,   9 cycles,  2 cycles
	//write read hold setup transition 
	//0111  1001 10   01    00         0 0

		
	//ams2->KM29U128T(dataflash) 
	//(Trc/Twc)r/w cycle time 50ns (setup+rw+hold)
	
	// /awe, (Twp)low min 25ns(write); (Twh)high min 15ns(hold+setup)
	//setup 0ns, write min 25ns, hold 10ns
	//1 cycle,   4 cycles,  2 cycles	
	
	//setup 0ns, read 35ns, hold 15ns
	//1 cycle,   5 cycles,  2 cycles
	//write read hold setup transition 
	//0100  0101 10   01    00         0 0
	
	//status cmd, cmd write between status return min 60ns, use delay to achieve
//	*pEBIU_AMBCTL1	= 0x79904590;
	*pEBIU_AMBCTL1	= 0x7990FFC3;	

	
	*pEBIU_AMGCTL	|= 0x000F;		

}//end Init_EBIU