DB27 (USB_XHCI) Register Description
Register Name | DB27 |
Relative Address | 0x000000054C |
Absolute Address |
0x00FE20054C (USB2_XHCI)
|
Width | 32 |
Type | mixedMixed types. See bit-field details. |
Reset Value | 0x00000000 |
Description | Doorbell Target and Stream ID |
Note: 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. Note: Bit Bash register testing is not recommended. For a description of this standard USB register, see the eXtensible Host Controller Interface for Universal Serial Bus (USB) Specification
DB27 (USB_XHCI) Register Bit-Field Summary
Field Name | Bits | Type | Reset Value | Description |
DB_STREAM_ID | 31:16 | rwNormal read/write | 0 | Doorbell stream ID |
Reserved | 15:8 | roRead-only | 0x0 | Reserved |
DB_TARGET | 7:0 | rwNormal read/write | 0 | Doorbell Target |