Wierd problem with Xilinx XC9572 ID code

[Jon Elson]

Hello,

I have been using Xilinx 9500 series CPLDs for some time. Usually the
slowest grade is sufficient for the bus interfaces, etc. that I do.
I use the Parallel Cable III to program them, and know about the problems
with that, but I know how to make it work.

I just pulled some new XC9572PC84s out of the tube and got a wierd
error message while trying to program them with Impact from the
Ise 4.1.03i package. The error was that the BSDL file didn't match
the device ID code.

The devices I have been using are marked XC9572 / PC84AMM0229 /
A1228011A / 15C

The parts that gave the error are marked XC9572 / PC84ASJ9737 /
A1025793A / 10C

The parts that won't program (or do anything else under Impact) are even
older,
it seems, than the ones that work OK.

Any idea why these devices have an ID code that is unrecognized by Impact?
I got some more of the 15C devices and they still program OK.

Thanks,

Jon

 

[Leon Heller]

Jon Elson wrote:

Hello,

I have been using Xilinx 9500 series CPLDs for some time. Usually the
slowest grade is sufficient for the bus interfaces, etc. that I do.
I use the Parallel Cable III to program them, and know about the problems
with that, but I know how to make it work.

I just pulled some new XC9572PC84s out of the tube and got a wierd
error message while trying to program them with Impact from the
Ise 4.1.03i package. The error was that the BSDL file didn't match
the device ID code.

The devices I have been using are marked XC9572 / PC84AMM0229 /
A1228011A / 15C

The parts that gave the error are marked XC9572 / PC84ASJ9737 /
A1025793A / 10C

The parts that won't program (or do anything else under Impact) are even
older,
it seems, than the ones that work OK.

Any idea why these devices have an ID code that is unrecognized by Impact?
I got some more of the 15C devices and they still program OK.

I had a similar problem with XC9536 devices. Xilinx told me not to use
Impact but to use the older JTAG programming software: Release 3.3WP8.x

That worked OK.

Leon
--
Leon Heller, G1HSM
Email: aqzf13@dsl.pipex.com
My low-cost Philips LPC210x ARM development system:
http://www.geocities.com/leon_heller/lpc2104.html