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Altera_Forum
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16 years ago

Bemicro PWR_N signal and USB

Hi. I'm using a Bemicro development board for learning Verilog and VHDL and I want to make an expansion board. I have read in the manual that an expansion board can use the PWR_N signal to enable the...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

The PWR_N signal is connected to a diode or circuit (V700) and doesn't short other signals. But the external +5V terminal is directly connected to VUSB and shouldn't be driven when USB is plugged in.