12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
| ID | Date | Version | Classification |
|---|---|---|---|
| 767625 | 07/13/2023 | Public |
Primary Status (PSTS) – Offset 6
This is the Primary Status registers. Refer description for each individual field below for more details of the register functionality.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 15 | 0x0 | RW/1C/V | Detected Parity Error (DPE) Set when the root port receives a command or data from the backbone with a parity error. This is set even if PCMD.PERE is not set. |
| 14 | 0x0 | RW/1C/V | Signaled System Error (SSE) Set when the root port signals a system error to the internal SERR# logic. |
| 13 | 0x0 | RW/1C/V | Received Master Abort (RMA) Set when the root port receives a completion with unsupported request status from the backbone. |
| 12 | 0x0 | RW/1C/V | Received Target Abort (RTA) Set when the root port receives a completion with completer abort from the backbone. |
| 11 | 0x0 | RW/1C/V | Signaled Target Abort (STA) Set whenever the root port forwards a target abort received from the downstream device onto the backbone. |
| 10:9 | 0x0 | RO | Primary DEVSEL# Timing Status (PDTS) Reserved per PCI-Express spec |
| 8 | 0x0 | RW/1C/V | Master Data Parity Error Detected (DPD) Set when the root port receives a completion with a data parity error on the backbone and PCMD.PERE is set. |
| 7 | 0x0 | RO | Primary Fast Back to Back Capable (PFBC) Reserved per PCI-Express spec. |
| 6 | 0h | RO | Reserved |
| 5 | 0x0 | RO | Primary 66 MHz Capable (PC66) Reserved per PCI-Express spec. |
| 4 | 0x1 | RO | Capabilities List (CLIST) Indicates the presence of a capabilities list. |
| 3 | 0x0 | RO/V | Interrupt Status (IS) Indicates status of hot plug and power management interrupts on the root port that result in INTx# message generation. This bit is not set if MSI is enabled. If MSI is not enabled, this bit is set regardless of the state of CMD.ID. |
| 2:0 | 0h | RO | Reserved |