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Altera_Forum's avatar
Altera_Forum
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16 years ago

about EPM240 high impedance output

im now encounter a problem with EPM240 high impedance output,it seems like the io port has connected a low value R to the ground that drop down the voltage provided by other signal on the bus. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

1'bz means the IO is open circuit to the bus,so the valtage has nothing to do with the IO.You can try on the hardware.