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

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Subject: Re: [ts-7000] Re: TS-7350 FPGA bitstream
From: Michael Schmidt <>
Date: Mon, 04 May 2009 11:36:26 -0700
Michael Schmidt wrote:
> andygal76 wrote:
>>> 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?
> 
> 
> There is a revision number implemented as part of the model ID register 
> in the TS-7350, but we don't yet have a formal process that insures that 
> this gets properly incremented each time a change is made to the FPGA. 
> (And since it is only 4 bits long it definitely wasn't designed to be 
> incremented on minor changes anyway, unfortunately...)
> 
> If I remember correctly, on the TS-7350 the revision number is the least 
> significant 3 bits of the register at 0x600FF080.
               ^

4 bits (I was thinking [3:0])

> 
>> Regards,
>> Andrea
> 
>   ______   Best Regards,
> |__  __/                  Michael Schmidt
>     ||                   Software Engineer
>     ||echnologic Systems (EmbeddedARM.com)
>     || (480)        16525 East Laser Drive
>     |/ 837-5200   Fountain Hills, AZ 85268
>         http://oz.embeddedarm.com/~michael
> 


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