Module d1_pac::usb1::ohci_control_status_partition::hc_control

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OHCI Control Register

Structs§

  • HC_CONTROL_SPEC
    OHCI Control Register
  • R
    Register hc_control reader
  • W
    Register hc_control writer

Enums§

  • CONTROL_BULK_SERVICE_RATIO_A
    This specifies the service ratio between Control and Bulk EDs. Before processing any of the nonperiodic lists, HC must compare the ratio specified with its internal count on how many nonempty Control EDs have been processed, in determining whether to continue serving another Control ED or switching to Bulk EDs. The internal count will be retained when crossing the frame boundary. In case of reset, HCD is responsible for restoring this value.
  • HOST_CONTROLLER_FUNCTIONAL_STATE_FOR_USB_A
    A transition to USBOperational from another state causes SOF generation to begin 1 ms later. HCD may determine whether HC has begun sending SOFs by reading the StartoFrame field of HcInterruptStatus.

Type Aliases§

  • BULK_LIST_ENABLE_R
    Field bulk_list_enable reader - This bit is set to enable the processing of the Bulk list in the next Frame. If cleared by HCD, the processing of the Bulk list does not occur after the next SOF. HC checks this bit whenever it determines to process the list. When disabled, HCD may modify the list. If HcBulkCurrentED is pointing to an ED to be removed, HCD must advance the pointer by updating HcBulkCurrentED before re-enabling processing of the list.
  • BULK_LIST_ENABLE_W
    Field bulk_list_enable writer - This bit is set to enable the processing of the Bulk list in the next Frame. If cleared by HCD, the processing of the Bulk list does not occur after the next SOF. HC checks this bit whenever it determines to process the list. When disabled, HCD may modify the list. If HcBulkCurrentED is pointing to an ED to be removed, HCD must advance the pointer by updating HcBulkCurrentED before re-enabling processing of the list.
  • CONTROL_BULK_SERVICE_RATIO_R
    Field control_bulk_service_ratio reader - This specifies the service ratio between Control and Bulk EDs. Before processing any of the nonperiodic lists, HC must compare the ratio specified with its internal count on how many nonempty Control EDs have been processed, in determining whether to continue serving another Control ED or switching to Bulk EDs. The internal count will be retained when crossing the frame boundary. In case of reset, HCD is responsible for restoring this value.
  • CONTROL_BULK_SERVICE_RATIO_W
    Field control_bulk_service_ratio writer - This specifies the service ratio between Control and Bulk EDs. Before processing any of the nonperiodic lists, HC must compare the ratio specified with its internal count on how many nonempty Control EDs have been processed, in determining whether to continue serving another Control ED or switching to Bulk EDs. The internal count will be retained when crossing the frame boundary. In case of reset, HCD is responsible for restoring this value.
  • CONTROL_LIST_ENABLE_R
    Field control_list_enable reader - This bit is set to enable the processing of the Control list in the next Frame. If cleared by HCD, the processing of the Control list does not occur after the next SOF. HC must check this bit whenever it determines to process the list. When disabled, HCD may modify the list. If HcControlCurrentED is pointing to an ED to be removed, HCD must advance the pointer by updating HcControlCurrentED before re-enabling processing of the list.
  • CONTROL_LIST_ENABLE_W
    Field control_list_enable writer - This bit is set to enable the processing of the Control list in the next Frame. If cleared by HCD, the processing of the Control list does not occur after the next SOF. HC must check this bit whenever it determines to process the list. When disabled, HCD may modify the list. If HcControlCurrentED is pointing to an ED to be removed, HCD must advance the pointer by updating HcControlCurrentED before re-enabling processing of the list.
  • HOST_CONTROLLER_FUNCTIONAL_STATE_FOR_USB_R
    Field host_controller_functional_state_for_usb reader - A transition to USBOperational from another state causes SOF generation to begin 1 ms later. HCD may determine whether HC has begun sending SOFs by reading the StartoFrame field of HcInterruptStatus.
  • HOST_CONTROLLER_FUNCTIONAL_STATE_FOR_USB_W
    Field host_controller_functional_state_for_usb writer - A transition to USBOperational from another state causes SOF generation to begin 1 ms later. HCD may determine whether HC has begun sending SOFs by reading the StartoFrame field of HcInterruptStatus.
  • INTERRUPT_ROUTING_R
    Field interrupt_routing reader - InterruptRouting This bit determines the routing of interrupts generated by events registered in HcInterruptStatus. If clear, all interrupt are routed to the normal host bus interrupt mechanism. If set interrupts are routed to the System Management Interrupt. HCD clears this bit upon a hardware reset, but it does not alter this bit upon a software reset. HCD uses this bit as a tag to indicate the ownership of HC.
  • INTERRUPT_ROUTING_W
    Field interrupt_routing writer - InterruptRouting This bit determines the routing of interrupts generated by events registered in HcInterruptStatus. If clear, all interrupt are routed to the normal host bus interrupt mechanism. If set interrupts are routed to the System Management Interrupt. HCD clears this bit upon a hardware reset, but it does not alter this bit upon a software reset. HCD uses this bit as a tag to indicate the ownership of HC.
  • ISOCHRONOUS_ENABLE_R
    Field isochronous_enable reader - This bit is used by HCD to enable/disable processing of isochronous EDs. While processing the periodic list in a Frame, HC checks the status of this bit when it finds an Isochronous ED (F=1). If set (enabled), HC continues processing the EDs. If cleared (disabled), HC halts processing of the periodic list (which now contains only isochronous EDs) and begins processing the Bulk/Control lists. Setting this bit is guaranteed to take effect in the next Frame (not the current Frame).
  • ISOCHRONOUS_ENABLE_W
    Field isochronous_enable writer - This bit is used by HCD to enable/disable processing of isochronous EDs. While processing the periodic list in a Frame, HC checks the status of this bit when it finds an Isochronous ED (F=1). If set (enabled), HC continues processing the EDs. If cleared (disabled), HC halts processing of the periodic list (which now contains only isochronous EDs) and begins processing the Bulk/Control lists. Setting this bit is guaranteed to take effect in the next Frame (not the current Frame).
  • PERIODIC_LIST_ENABLE_R
    Field periodic_list_enable reader - This bit is set to enable the processing of periodic list in the next Frame. If cleared by HCD, processing of the periodic list does not occur after the next SOF. HC must check this bit before it starts processing the list.
  • PERIODIC_LIST_ENABLE_W
    Field periodic_list_enable writer - This bit is set to enable the processing of periodic list in the next Frame. If cleared by HCD, processing of the periodic list does not occur after the next SOF. HC must check this bit before it starts processing the list.
  • REMOTE_WAKEUP_CONNECTED_R
    Field remote_wakeup_connected reader - This bit indicates whether HC supports remote wakeup signaling. If remote wakeup is supported and used by the system, it is the responsibility of system firmware to set this bit during POST. HC clear the bit upon a hardware reset but does not alter it upon a software reset. Remote wakeup signaling of the host system is host-bus-specific and is not described in this specification.
  • REMOTE_WAKEUP_CONNECTED_W
    Field remote_wakeup_connected writer - This bit indicates whether HC supports remote wakeup signaling. If remote wakeup is supported and used by the system, it is the responsibility of system firmware to set this bit during POST. HC clear the bit upon a hardware reset but does not alter it upon a software reset. Remote wakeup signaling of the host system is host-bus-specific and is not described in this specification.
  • REMOTE_WAKEUP_ENABLE_R
    Field remote_wakeup_enable reader - This bit is used by HCD to enable or disable the remote wakeup feature upon the detection of upstream resume signaling. When this bit is set and the ResumeDetected bit in HcInterruptStatus is set, a remote wakeup is signaled to the host system. Setting this bit has no impact on the generation of hardware interrupt.
  • REMOTE_WAKEUP_ENABLE_W
    Field remote_wakeup_enable writer - This bit is used by HCD to enable or disable the remote wakeup feature upon the detection of upstream resume signaling. When this bit is set and the ResumeDetected bit in HcInterruptStatus is set, a remote wakeup is signaled to the host system. Setting this bit has no impact on the generation of hardware interrupt.