Method of maintaining a usb active state without data transfer
作者： Mark Steven Frisbee , II Samuel L. Mullis
DOI:
关键词: Engineering 、 Data transmission 、 Computer hardware 、 Host (network) 、 Local bus 、 State (computer science) 、 USB 、 Control bus 、 USB hub 、 Address bus
摘要: A USB bus-powered device (32) in Suspend state that requires active bus power levels, but has no data transfer need, may initiate Resume signaling to return a segment (31 ) state, without transferring any across the ). driver (24) considers both needs and activity deciding Globally or Selectively In particular, upon ), queries (32). If will require mode within predetermined duration, indicate remain an mode. this case, does not direct host (26)
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