c6701 flash CE signal delay occur problem

Hi Shankari,

I am not clear why you said "Able to write the data on flash through memory window of CCS browser ?", all flash program needs to 3 program commands and then write the data to flash, if there is no program command before write data into flash, the data can't be written into flash, so you said write the data through memory window of CCS browser I think it's not correctly.

you said "Tweak the SETUP/HOLD timing parameters and check". I use the power on  default  timing parameters, which I have  calculated, it can't be 500ms delay.  Another I need remind you is that the  program command CMD0，CMD1，CMD2 ce signal is noraml,ONLY the write data  ce signal is 500ms delay.

There is my flash write function:

int flash_write(unsigned int* pSRC, unsigned int* pDST, int size)

{

int i = 0;

unsigned short *pSrc = (unsigned short*)pSRC;

unsigned int   *pDst = (unsigned int*)pDST;

for(i = 0; i < size/2; i++)

{

//word mode

*(unsigned int *)(FLASH_BASE+(0x555<<2)) =  0x00aa;  //CMD 0

  *(unsigned int *)(FLASH_BASE+(0x2aa<<2)) =  0x0055;  //CMD 1

*(unsigned int *)(FLASH_BASE+(0x555<<2)) =  0x00a0; //CMD2

*pDst  = *pSrc; // wirte data

pDst++;

pSrc++;

}

return 0;

}

My flash write function copy from TI's document, I upload it to attachment.

TMS320C6000 EMIF to External Flash Memory.pdf

Dear Si,
Understood. Thanks.
Actually I can understand that why she asked that question since we were able to access the flash contents with LCDK board and gel file has all the required flash configurations.

Could you set the RFEN bit in SDCTL register of EMIFA.