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[ts-7000] Re: TS-7350 FPGA bitstream

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Subject: [ts-7000] Re: TS-7350 FPGA bitstream
From: "andygal76" <>
Date: Thu, 30 Apr 2009 07:47:43 -0000
Michael,

--- In  Michael Schmidt <> wrote:

> All the bitstreams we provide update the internal RAM inside the part, 
> and must be loaded on every boot.
> 
> I was not involved in the development but I understand from talking to 
> the engineer that we ran into some issues during development of 
> load_ts7350 whereby loading a bitstream into flash from a user-space 
> program makes it very easy to brick the board.

Thank you very much for your valuable reply. 
I'd suggest to update the documentation in order to make this point a little 
bit more clear.
I tell you so because I understand you work with people at TS. ;-) 
 
> It is not possible to "read back" the bitstream from the FPGA.  This is 
> a security feature and part of the design of the FPGA which we have no 
> control over.  The best way to determine if the new bitstream is loaded 
> is to have a unique register value (e.g. revision number) somewhat that 
> you can read.  However this is dependant on whoever updates the HDL code 
> to do this.

Any idea if something similar is implemented for TS-7350 bitstreams? Could you 
suggest a better place to ask?

Regards,
Andrea




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