Intel® Core™ Ultra Series 3 Processors I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 872352 | 04/14/2026 | 001 | Public |
SoundWire Link SDI IDentifiers (SNDWLSDIID4) – Offset d94
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.
1 register instance per sub-link.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 15 | 0h | RO | Reserved (Preserved) (RSVD15) SW must preserve the original value when writing. |
| 14 | 0h | RW | SDI 14 (SDIID14) This link uses SDI 14. |
| 13 | 0h | RW | SDI 13 (SDIID13) This link uses SDI 13. |
| 12 | 0h | RW | SDI 12 (SDIID12) This link uses SDI 12. |
| 11 | 0h | RW | SDI 11 (SDIID11) This link uses SDI 11. |
| 10 | 0h | RW | SDI 10 (SDIID10) This link uses SDI 10. |
| 9 | 0h | RW | SDI 9 (SDIID9) This link uses SDI 9. |
| 8 | 0h | RW | SDI 8 (SDIID8) This link uses SDI 8. |
| 7 | 0h | RW | SDI 7 (SDIID7) This link uses SDI 7. |
| 6 | 0h | RW | SDI 6 (SDIID6) This link uses SDI 6. |
| 5 | 0h | RW | SDI 5 (SDIID5) This link uses SDI 5. |
| 4 | 0h | RW | SDI 4 (SDIID4) This link uses SDI 4. |
| 3 | 0h | RW | SDI 3 (SDIID3) This link uses SDI 3. |
| 2:0 | 0h | RO | Reserved |