Intel® Core™ Ultra 200V Series Processors SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 831520 | 09/03/2024 | 001 | Public |
CORB Read Pointer (CORBRP) – Offset 4a
This register reports the read pointer of the Command Output Ring Buffer.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 15 | 0h | RW/V | CORB Read Pointer Reset (CORBRPRST) Software writes a 1 to this bit to reset the CORB Read Pointer to 0 and clear any residual pre-fetched commands in the CORB hardware buffer within the Intel Audio controller. The hardware will physically update this bit to 1 when the CORB Pointer reset is complete. Software must read a 1 to verify that the reset completed correctly. Software must clear this bit back to 0 and read back the 0 to verify that the clear completed correctly. The CORB DMA engine must be stopped prior to resetting the Read Pointer or else DMA transfer may be corrupted. |
| 14:8 | 0h | RO | Reserved |
| 7:0 | 0h | RO/V | CORB Read Pointer (CORBRP) Software reads this field to determine how many commands it can write to the CORB without over-running. |