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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 11:12:27 -0700
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.

> 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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