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i.MX25 Errata on SDRAM

Question asked by Nori Shinozaki on Jan 7, 2016
Latest reply on Jan 13, 2016 by Nori Shinozaki

Hello Igor,

 

ENGcm11876

ESDRAMC: Data corrupted during burst access across a page boundary of an 8-column SDRAM.

"This corruption is due to the fact that the ESDRAMC cannot perform a burst access across a row/page boundary. "

Projected Impact:

"SDRAM devices addressed with 8 columns, organized in 1M x 16 bit x 4 banks, cannot be used."

 

8 columns = 256 addresses and there are 4096 row addresses or pages in a 1M device.

The burst length is 8 and the size is 16bit x 8 =128bit.

 

How can this bursts across a row or page boundary?

 

Best regards,

Nori Shinozaki

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