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brechat
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Registered: ‎04-28-2010

VC707 BPI Flash Access using AXI EMC

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Hi everybody,

 

I'm trying to access a BPI Flash memory from a Kintex 7 FPGA (this is the memory where bitstream is stored). The driver keeps stucking on Init and I want to be sure that the problem is not coming from timing. The memory part number is PC28F256P30BFE from Micron (datasheet attached)

 

I've simulated the output of EMC block and I notice something strange: normally, for a write operation, CE should go low, then WE, and after the write operation, WE goes high and THEN CE goes high. On the simulation I see that CE goes high BEFORE WE. Is this right? 

 

This is the simulation results:

 Timing.jpg

 

and this is the IP timing configuration

Ip_config.JPG

 

Thanks for your help!

 

Mariano

 

 

 

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pratham
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Registered: ‎06-05-2013

@brechat I would rather suggest you check the design's behavior using ILAs. If you have copied timings from the datasheet then probably it is right.

-Pratham

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pratham
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4,614 Views
Registered: ‎06-05-2013

@brechat I would rather suggest you check the design's behavior using ILAs. If you have copied timings from the datasheet then probably it is right.

-Pratham

----------------------------------------------------------------------------------------------
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Give Kudos to a post which you think is helpful and reply oriented.
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brechat
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Registered: ‎04-28-2010

Thanks @pratham. I will try with the ILA

 

Mariano

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