9.2.3.3 USB OTG Controller: Suspend/Resume Operations

With the introduction of link power management (LPM), there are two basic methods for the USB controller to be suspended and resumed. These two methods are demonstrated in the basic LPM transaction diagram as shown in the following figure.

Figure 9-8. LPM State Transition Diagram

The procedure in which the controller is suspended and resumed depends on whether the controller is operating as a device (peripheral) or as a host, and the method of suspend desired.

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