Zynq UltraScale+ Devices Register Reference > Module Summary > USB3_XHCI Module > DBOFF (USB3_XHCI) Register

DBOFF (USB3_XHCI) Register

DBOFF (USB3_XHCI) Register Description

Register NameDBOFF
Relative Address0x0000000014
Absolute Address 0x00FE200014 (USB3_0_XHCI)
0x00FE300014 (USB3_1_XHCI)
Width32
TyperoRead-only
Reset Value0x00000000
DescriptionDoorbell Offset Register
For register definitions, refer to the xHCI specification.

DBOFF (USB3_XHCI) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
DOORBELL_ARRAY_OFFSET31:2roRead-only0Doorbell Array Offset - RO
Based on configuration, core automatically updates it.
For a description of this standard USB register field, see the eXtensible Host Controller Interface for Universal Serial Bus (USB) Specification 3.0.
Reserved 1:0roRead-only0x0Reserved