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Comp.Arch.FPGA | CPLD erase??
There are 4 messages in this thread.
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CPLD erase?? - 2007-03-21 09:34:00
Working with a coolrunner2 CPLD. Is there a way to erase whatever has been programmed into the CPLD, without using JTAG?______________________________
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Re: CPLD erase?? - Dave Pollum - 2007-03-21 11:33:00
On Mar 21, 8:34 am, mtsuka...@gmail.com wrote: > Working with a coolrunner2 CPLD. Is there a way to erase whatever has > been programmed into the CPLD, without using JTAG? As far as I know, the only way to erase/program Xilinx CPLDs is via JTAG. -Dave Pollum______________________________
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Re: CPLD erase?? - 2007-03-21 17:11:00
mtsuka...@gmail.com wrote: > Working with a coolrunner2 CPLD. Is there a way to erase whatever has > been programmed into the CPLD, without using JTAG? Unless you're storing crytographic keys in the CPLD, what's the point of erasing it without using JTAG? Dave Pollum wrote: > As far as I know, the only way to erase/program Xilinx CPLDs is via > JTAG. For erasure, thermite works too. A hammer may work but is not as certain.______________________________
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Re: CPLD erase?? - 2007-03-22 09:53:00
On Mar 21, 5:11 pm, Eric Smith <e...@brouhaha.com> wrote: > mtsuka...@gmail.com wrote: > > Working with a coolrunner2 CPLD. Is there a way to erase whatever has > > been programmed into the CPLD, without using JTAG? > > Unless you're storing crytographic keys in the CPLD, what's the point > of erasing it without using JTAG? > > Dave Pollum wrote: > > As far as I know, the only way to erase/program Xilinx CPLDs is via > > JTAG. > > For erasure, thermite works too. A hammer may work but is not as certain. well... the CPLD I'm using is in a BGA package (which means I can't attach leads to the pins), and another device on the JTAG chain got stuck in reset, so the chain 'broke' and couldn't be accessed. That's why I was asking