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ADSP-21489 Flash driver timing is violating flash device specs.

Question asked by snoopy on Jul 31, 2013
Latest reply on Aug 8, 2013 by Harshit.Gaharwar

Hello

 

I am using a custom ADSP-21489 (400MHz part) board and trying to use the 21489 Flash driver to download code into the flash device (M25P16) but keep getting the same error

 

Error: Could not write file, load will not complete

 

On further investigation with a digital oscilloscope the tSHSL (deselect time) which has a minimum spec of 100 nS is being violated with times as narrow as 70 nS (see #CS timing in screen grab below). For a good margin this timing should be at least 200 nS. Probably on a 200MHz dsp this would not be a problem. Any recommendations for changing the timing ?

 

regards

david

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