Intel® Core™ Ultra 200S and 200HX Series Processors SOC I/O Registers
ID | Date | Version | Classification |
---|---|---|---|
834819 | 01/29/2025 | 001 | Public |
Root Status (RSTS) – Offset 60
This is the Root Status registers. Refer description for each individual field below for more details of the register functionality.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:18 | 0h | RO | Reserved (RSVD_M) Reserved. |
17 | 0h | RO/V | PME Pending (PP) Indicates another PME is pending when the PME status bit is set. When the original PME is cleared by software, it will be set again, the requestor ID will be updated, and this bit will be cleared. Root Ports have a one deep PME pending queue. |
16 | 0h | RW/1C/V | PME Status (PS) Indicates that PME was asserted by the requestor ID in RID. Subsequent PMEs are kept pending until this bit is cleared. |
15:0 | 0h | RO/V | PME Requestor ID (RID) Indicates the PCI requestor ID of the last PME requestor. Valid only when PS is set. Root ports are capable of storing the requester ID for two PM_PME messages, with one active (this register) and a one deep pending queue. Subsequent PM_PME messages will be dropped. |