Strictly necessary cookies are on by default and cannot be turned off. Functional, Performance and Tracking/targeting/sharing cookies can be turned on below based on your preferences (this banner will remain available for you to accept cookies). You may change your cookie settings by deleting cookies from your browser. Then this banner will appear again. You can learn more details about cookies HERE.
Strictly necessary (always on)
Functional, Performance and Tracking/targeting/sharing (default off)
Question: How can I place FX2LP in low power mode even when it is not connected to an active host?
Inorder to unconditionally put the USB device into the low power state(irrespective of whether the cable is connected or not connected), you can simply write into the SUSPEND register and then set the PCON.0 bit as 1.
Once in the low-power mode, there are three ways to wake up the EZ-USB:
1.USB activity on the EZ-USB’s DPLUS pin
2. Assertion of the WAKEUP pin
3. Assertion of the WU2 (“Wakeup 2”) pin
These three wakeup sources may be individually enabled by setting the DPEN, WUEN, and WU2EN bits in the Wakeup Control register.