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Registered: ‎09-25-2017

xc9536 security bit

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dear all members:

i read xc9536 of hmi pcb by xeltek sp3000u in socket.in bufeer i see some bit 0 and some bits 1.in jed file.

how can i underestand the buffers is true or no?and how can i underestand the chip security bit activate or no?

and please tell me is it simple way for reading/writing to chip by jtag which software?please share or give me

 

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Scholar u4223374
Scholar
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Registered: ‎04-26-2015

Re: xc9536 security bit

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Xilinx does not tell people how the bitstream is constructed, so I doubt you'll have much luck there. However, I would expect that with the security bit set it'll either read all zeros or just refuse to read at all - so if you're able to read out a mixture of zeros and ones then it's probably not protected.

 

The normal tool to read/write Xilinx chips is Xilinx iMPACT, which is available as part of ISE Lab Tools (free). This will only work with Xilinx JTAG adaptors, and the list of adaptors that will still talk to an XC9536 is relatively small - you may have to hunt for a second-hand one on eBay.

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Scholar u4223374
Scholar
99 Views
Registered: ‎04-26-2015

Re: xc9536 security bit

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Xilinx does not tell people how the bitstream is constructed, so I doubt you'll have much luck there. However, I would expect that with the security bit set it'll either read all zeros or just refuse to read at all - so if you're able to read out a mixture of zeros and ones then it's probably not protected.

 

The normal tool to read/write Xilinx chips is Xilinx iMPACT, which is available as part of ISE Lab Tools (free). This will only work with Xilinx JTAG adaptors, and the list of adaptors that will still talk to an XC9536 is relatively small - you may have to hunt for a second-hand one on eBay.

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81 Views
Registered: ‎09-25-2017

Re: xc9536 security bit

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hi scholar

thank you very much for help  and answer me.

best regards.

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