9.1.4 Special Functions in SFR

SFR_OHCIICR.SUSPx to control suspend for each port. These bits must be set to reduce power consumption on VDDIN33 in Low-power mode.
SFR_OHCIICR.ARIE to enable OHCI asynchronous resume interrupt
SFR_OHCIISR.RISx for Port Resume status of each port

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