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Altera_Forum
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9 years ago

MAX-II Input pins never detect a LO

All, I tried to post this in the Quartus II and Tools discussion but I have never received a response. My Setup: Quartus II 9.0 MAX-II PLD Schematic entry http://www.alteraforum.com/...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Hi Alex,

I did post the schematic on the posted link.... but..... I changed my CHIP_ID and addr_rd inputs to pins 1-8 and all things seem to be working. They all still go to the same I/O bank as before (pins 12-15, 27-30), but now they seem to be working.

Also, it was my own "development board" that I have used for numerous other projects. I just have a 30MHz crystal for my clock on pin 18 (my normal's are 20 & 30MHz) and MAX6412 (uP Reset) on pin 61.

but anyway, I will mark this up for experience and see about shifting pins around next time.

(now I have a harder time to layout my PCB)

Thanks again,

Keith