Type Alias d1_pac::usb1::ehci_operational::usbcmd::HOST_CONTROLLER_RESET_R

pub type HOST_CONTROLLER_RESET_R = BitReader<bool>;

Field host_controller_reset reader - Host Controller Reset

This control bit is used by software to reset the host controller. The effects of this on Root Hub registers are similar to a Chip Hardware Reset.

When software writes a one to this bit, the Host Controller resets its internal pipelines, timers, counters, state machines, etc. to their initial value. Any transaction currently in progress on USB is immediately terminated. A USB reset is not driven on downstream ports.

All operational registers, including port registers and port state machines are set to their initial values. Port ownership reverts to the companion host controller(s). Software must reinitialize the host controller as described in Section 4.1 of the CHEI Specification in order to return the host controller to an operational state. This bit is set to zero by the Host Controller when the reset process is complete. Software cannot terminate the reset process early by writing a zero to this register.

Software should not set this bit to a one when the HC Halted bit in the USBSTS register is a zero. Attempting to reset an actively running host controller will result in undefined behavior.

Aliased Type

struct HOST_CONTROLLER_RESET_R { /* private fields */ }