Module lpc55_pac::usbfsh::hcrhdescriptora

source · [−]

Expand description

First of the two registers which describes the characteristics of the root hub

Structs

DT_R

Field DT reader - DeviceType This bit specifies that the root hub is not a compound device.

DT_W

Field DT writer - DeviceType This bit specifies that the root hub is not a compound device.

HCRHDESCRIPTORA_SPEC

First of the two registers which describes the characteristics of the root hub

NDP_R

Field NDP reader - NumberDownstreamPorts These bits specify the number of downstream ports supported by the root hub.

NDP_W

Field NDP writer - NumberDownstreamPorts These bits specify the number of downstream ports supported by the root hub.

NOCP_R

Field NOCP reader - NoOverCurrentProtection This bit describes how the overcurrent status for the root hub ports are reported.

NOCP_W

Field NOCP writer - NoOverCurrentProtection This bit describes how the overcurrent status for the root hub ports are reported.

NPS_R

Field NPS reader - NoPowerSwitching These bits are used to specify whether power switching is supported or port are always powered.

NPS_W

Field NPS writer - NoPowerSwitching These bits are used to specify whether power switching is supported or port are always powered.

OCPM_R

Field OCPM reader - OverCurrentProtectionMode This bit describes how the overcurrent status for the root hub ports are reported.

OCPM_W

Field OCPM writer - OverCurrentProtectionMode This bit describes how the overcurrent status for the root hub ports are reported.

POTPGT_R

Field POTPGT reader - PowerOnToPowerGoodTime This byte specifies the duration the HCD has to wait before accessing a powered-on port of the root hub.

POTPGT_W

Field POTPGT writer - PowerOnToPowerGoodTime This byte specifies the duration the HCD has to wait before accessing a powered-on port of the root hub.

PSM_R

Field PSM reader - PowerSwitchingMode This bit is used to specify how the power switching of the root hub ports is controlled.

PSM_W

Field PSM writer - PowerSwitchingMode This bit is used to specify how the power switching of the root hub ports is controlled.

R

Register HCRHDESCRIPTORA reader

W

Register HCRHDESCRIPTORA writer