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SDRAM 4M16 problem

Question asked by prashant10121986 on Apr 16, 2011
Latest reply on Jun 14, 2011 by Nabeel

Hi Everyone,

I declared the size of the array variable_write[bytes] and variable_read[bytes] as 100 bytes. In code I am writing 25 into variable_write[i], but when I view the array in the blackfin memory I am getting alternate 20 and 25 which is not correct since I am writing 25. Please help me in resolving this issue.

 

DSP:527

SDRAM: 4M16

 

I think that the problem is in the SDRAM Register settings or LDF. There is nothing problem in code since it is working fine with cache memory. When I declared the array in SDRAM then the problem is occuring.

 

One more important note is that Same circuit connection is working fine with 532 DSP and 4M16 SDRAM memory. We changed only DSP to 527 and Circuit connection remains same.

Same 527 DSP circuit connection is working fine with 16M16 SDRAM memory.

 

Please find the attachment of LDF file.

Please help me in solving this issue as early as possible.

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