DB16 (USB3_XHCI) Register

Zynq UltraScale+ Devices Register Reference (UG1087)

Document ID
UG1087
Release Date
2024-03-13
Revision
1.10

DB16 (USB3_XHCI) Register Description

Register NameDB16
Offset Address0x0000000520
Absolute Address 0x00FE200520 (USB3_0_XHCI)
0x00FE300520 (USB3_1_XHCI)
Width32
TypemixedMixed types. See bit-field details.
Reset Value0x00000000
DescriptionDoorbell Register Bit Field Definitions
For a description of this standard USB register field, see the eXtensible Host Controller Interface for Universal Serial Bus (USB) Specification 3.0.
Programming this field with random data will cause side effect i.e. Register Access will fail (Timeout) if the pipe clock is not running or reset is asserted. Bit Bash register testing is not recommended.

DB16 (USB3_XHCI) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
DB_STREAM_ID31:16rwNormal read/write0DB_STREAM_ID
For a description of this standard USB register field, see the eXtensible Host Controller Interface for Universal Serial Bus (USB) Specification 3.0.
Reserved15:8roRead-only0x0Reserved
DB_TARGET 7:0rwNormal read/write0DB_TARGET
For a description of this standard USB register field, see the eXtensible Host Controller Interface for Universal Serial Bus (USB) Specification 3.0.