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USB Superspeed Peripherals

Anonymous
Not applicable

I understand I set the requested USB power levels in the configuration descriptors.

   

My FX3 has a requirement to turn on some additional hardware once the requested power levels are granted: how do I tell when that has happened?

Are there events/callbacks for that, or can I read certain registers for it?

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Anonymous
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Paul,

   

Yes, the required power should be specified in the configuration descriptors. Generally once FX3 is enumerated it can draw the requested power from the host.

   

You can register a callback in the firmware when you receive a SET_CONF request from the host. In handling that callback you can provide the power to the external hardware.

   

 

   

Regards

   

Dhritiman

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