L2 suspend

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DaBo_288066
Level 2
Level 2

Hi all,

   

dealing with FX3S power management I see on its manual (CYUSB303X_001-84160_0D_V.pdf,  page 13) an interesting suspend mode: "
Suspend mode with USB 3.0 PHY disabled (L2)". The strange thing is that "Methods of Exit" is equal to L1, where the PHY is enabled.

   

1 - How can the cpu be re-woken from USB bus if the PHY disabled?

   

2 - Is it possible to enter in L2 suspend mode using the API? this can be very useful to save some mW and reach the (in)famous 2.5mA total suspend current...

   

Thanks

   

Dax

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