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2x 1) Soldered and tested adapter
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2x 1) Soldered and tested adapter
Hmmm, OK, but you are probably talking about VIO pins of PCI connector. In my opinion this may be some kind of mistake on Firebird PCB. If logic is 3.3V (and it must be because CPLDs doesn't have any contact with 5V, fully powered from 3.3V at least on v1.1), then VIO should be 3.3V.On my A4000 Firebird V I/O is 5V.
Hmmm, OK, but you are probably talking about VIO pins of PCI connector. In my opinion this may be some kind of mistake on Firebird PCB. If logic is 3.3V (and it must be because CPLDs doesn't have any contact with 5V, fully powered from 3.3V at least on v1.1), then VIO should be 3.3V.
BUT:
My adapter doesn't use VIO pins on PCI side. They are left unconnected. 3.3V is routed from 3.3V PCI pins and logic on Firebird v1.1 is 3.3V. So as a result, everything is 3.3V on my adapter. I believe...
p.s. Possible reason of 5V on VIO pins on Firebird is PCI specs. As you can see, these slots are 5V-type (they have a 5V-type notch), but still CPLDs are 3.3V.
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