Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
Set ID Value (DW0) (SETIDVAL0) – Offset 1c88
This register indicates the ID value initialized by IOSF Sideband set ID message.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:16 | 0h | RO/V | Device ID (DID) Global setting of Device ID. The upper bits of this field are expected to set the upper bits of each PCI function DeviceID. The lower bits are expected to be ignored and the lower bits of each PCI function DeviceID will be set by some function specific strap(s) or fuses. The specific number of bits set by the agent specific straps is implementation specific, but it is recommended that all receivers support 7 due to existing known use cases. |
| 15:8 | 0h | RO | Reserved (Zero) (RSVD15) SW must use zeros for writes. |
| 7:0 | 0h | RO/V | Revision ID (RID) Revision ID to identify the silicon revision for corresponding driver for the PCI device. This value is expected to be updated by BIOS through the Compatibility RevID (CRID) feature. |