2 Replies Latest reply on Aug 24, 2020 11:26 PM by mama_1337366

    About FX2 wakeup pin.

    mama_1337366

      Hi, how to use this pin?

      I do not let the 8051 core into power down mode forever?

      How could I set this pin?

      connect to  vcc or ground,  directly?

       

      Thanks.

        • 1. Re: About FX2 wakeup pin.
          YatheeshK_36

          Hello,

           

          Wakeup pin is used to bring the FX2LP CPU out of suspend through an external interrupt generating by asserting the pin.

          Holding WAKEUP asserted inhibits the EZ-USB chip from suspending. This pin has programmable polarity.

           

          The WAKEUPCS register can be used to enable/disable individual wakeup (WUEN/ WAKEUPCS.0 for Wakeup pin) and set its polarity ( WUPOL ).

           

          If you want the EZ-USB to never go to suspend state, you can leave the pin asserted (low/high) depending on the polarity set in the WAKEUPCS register (WAKEUPCS.4/ WUPOL).

           

          Thanks,

          Yatheesh

          • 2. Re: About FX2 wakeup pin.
            mama_1337366

            Thanks for the help, I have understood.