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Altera_Forum's avatar
Altera_Forum
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16 years ago

Same logic high ,but different voltage

Hi,guys. So why different pins have different voltage, while they are all logic high. (In my experiment,one is 1.14V, the other is 3.3V) Appreciate for any reply
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Did you notice, that the said pin (signal proto5_IO37) is also connected to the CF socket? Busswitch U22 is connected between the GPIO connector (proto5_IO37) and the FPGA (proto_IO37). If the problem persists, you should measure both sides of U22.