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BF53x vs BF54x SDRAM speed

Question asked by gideon on Feb 6, 2012
Latest reply on Feb 6, 2012 by gideon

How much quicker is the BF548 DDR than the BF537 SDRAM?

 

My code has to histogram an image, which due to the scatter write effect is very slow on a BF537. I have heard that the BF537 SDRAM interface only does a burst of one, is this true? If it is then the cache will actually hinder as it effectively turns one CPU read/write into a cache line of sixteen transfers.

 

I am considering the BF548, which according to the datasheet timing diagram does bursts of four (or more?) but would like to know if it really will be a lot faster at this before spending the $1000 on the ez-kit.

 

Gideon.

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