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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.
Solved! Go to Solution.
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- fx2 wakeup pin
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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
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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
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Thanks for the help, I have understood.