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Put LAN9514 into SUSPEND0 Mode?

Fri Aug 10, 2018 9:33 pm

Hi, I am investigating ways of trying to reduce power consumption from the LAN9514 chip. I have seen some discussion on methods to enable/disable the bus completely, such as here: viewtopic.php?t=62411

However, I am wondering if there is a way to put the LAN9514 into SUSPEND0 mode as documented in its datasheet, as opposed to completely disabling it?

A support contact at SMSC has told me "SUSPEND0 even has a roughly 20% savings from unsuspended mode and all of the data transmission remains unaffected (only USB Control communication is down, not the data transmission)."

Is there an already established method to put the chip into SUSPEND0 mode, without disabling it completely?


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