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Michael-C's avatar
Michael-C
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2 years ago

Nios-II Resets with PIO command

I am developing an application using the Nios-II embedded CPU. It utilizes multiple PIO ports, configured as inputs and outputs. I have one in particular that is being very troublesome. Everytime I w...
Nios Cpu
wwanalim_intel's avatar
wwanalim_intel
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2 years ago

We also would like to confirm if the i/o are operating within the standards.

  • Michael-C's avatar
    Michael-C
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    2 years ago

    I am using the GPIO between a tri-state and a logic low.

    When a logic low, it is connected to a solid state relay (in essence a forward bias diode with Vf typ 1.2V), tied to +5V. There is a 1.91k ohm resistor in series. Thus the sourcing current when driving a logic low would be 5-1.2/1.91k approx 2mA.