Corrupt Xilinx 18vxx poms

[Virtex_User]

I'm using a Xilinx 18V04 prom and find that it occasionaly loses it's
program. I can program the prom without a problem. I use it for
months, and then one dy when I turn on the board, some of the bits on
the prom are incorrect. If I reprogram the prom everything works
normally again. This has happened on several different cards. Has
anyone else seen this problem. I searched through the archives on
this newsgroup, and found someone with the exact same problem, but no
solution was offered. I contacted xilinx, and they have one of the
parts that failed, but claim nothing is wrong with it. Any
information would be much appreciated.

 

[Chen Wei Tseng]

Hi,

A couple things to check.

Please ensure you're using 5.2i service pack 3 iMPACT for programming.
After that, can you please perform a verify?

If you've checked this already, can you please open/reopen a case with
the Xilinx hotline and e-mail me directly with your case number? I'll
work with you and the hotline regarding this issue.

Regards, Wei
Xilinx Applications

Virtex_User wrote:

I'm using a Xilinx 18V04 prom and find that it occasionaly loses it's
program. I can program the prom without a problem. I use it for
months, and then one dy when I turn on the board, some of the bits on
the prom are incorrect. If I reprogram the prom everything works
normally again. This has happened on several different cards. Has
anyone else seen this problem. I searched through the archives on
this newsgroup, and found someone with the exact same problem, but no
solution was offered. I contacted xilinx, and they have one of the
parts that failed, but claim nothing is wrong with it. Any
information would be much appreciated.

 

[Brian Davis]

afocacci@yahoo.com (Virtex_User) wrote in message news:<ce6ef594.0309230942.6c8a22df@posting.google.com>...

I'm using a Xilinx 18V04 prom and find that it occasionaly loses it's
program. I can program the prom without a problem. I use it for
months, and then one dy when I turn on the board, some of the bits on
the prom are incorrect.

See also Xilinx Answer Record 14444

"XC18V00/XC1700 - PROM frozen after the power cycling test,
configuration fails after power-on reset/initial power up"

Brian