Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
USB Audio Offload Link SDI IDentifiers (UAOLSDIID) – Offset d4c
This register reports the association of controller SDI for specific link.
If LCAP.ALT = 1, this register is RW allowing SW to assign the SDI number for the extended audio link codec / endpoints discovered. When set to 1, it also enable the setting of WAKESTS bit for any wake detected during the link powered down.
Not implemented for USB Audio Offload link given no command / control and no wake capability.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 15 | 0h | RO | Reserved (Zero) (RSVD15) SW must use zeros for writes. |
| 14 | 0h | RO | SDI 14 (SDIID14) This link uses SDI 14. |
| 13 | 0h | RO | SDI 13 (SDIID13) This link uses SDI 13. |
| 12 | 0h | RO | SDI 12 (SDIID12) This link uses SDI 12. |
| 11 | 0h | RO | SDI 11 (SDIID11) This link uses SDI 11. |
| 10 | 0h | RO | SDI 10 (SDIID10) This link uses SDI 10. |
| 9 | 0h | RO | SDI 9 (SDIID9) This link uses SDI 9. |
| 8 | 0h | RO | SDI 8 (SDIID8) This link uses SDI 8. |
| 7 | 0h | RO | SDI 7 (SDIID7) This link uses SDI 7. |
| 6 | 0h | RO | SDI 6 (SDIID6) This link uses SDI 6. |
| 5 | 0h | RO | SDI 5 (SDIID5) This link uses SDI 5. |
| 4 | 0h | RO | SDI 4 (SDIID4) This link uses SDI 4. |
| 3 | 0h | RO | SDI 3 (SDIID3) This link uses SDI 3. |
| 2 | 0h | RO | SDI 2 (SDIID2) This link uses SDI 2. |
| 1 | 0h | RO | SDI 1 (SDIID1) This link uses SDI 1. |
| 0 | 0h | RO | SDI 0 (SDIID0) This link uses SDI 0. |