On 02/17/2017 10:01 AM, Philipp Hachtmann wrote:




The CPLD you had on the last board, XC9572XL is a bit long in the tooth, perhaps? Would you expect to use that one again, or a newer chip?
I will use it again. It was already old when I decided to use it. It has 5V tolerant inputs.

It seems that Xilinx has made some hints that they do NOT plan to retire the XC95xxXL series any time soon. If they do, the CoolRunner II family can be used with the addition of one more voltage regulator. The internal architecture is more FPGA-like, but the Xilinx tools hide all of that in almost all cases. The 9500 architecture is good for recognizing long address fields, but otherwise is not all that efficient for general logic.

Jon

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