12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
PCI Status (PCISTS_0_0_0_PCI) – Offset 6
This status register reports the occurrence of error events on Device 0s PCI interface. Since Device 0 does not physically reside on PCI_A many of the bits are not implemented.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15 | 0x0 | RW/1C/V | Detected Parity Error (DPE) Detected Parity Error: This bit is set when this Device receives a Poisoned TLP. |
14 | 0x0 | RW/1C/V | Signaled System Error (SSE) Signaled System Error: This bit is set to 1 when Device 0 generates an SERR message over DMI for any enabled Device 0 error condition. Device 0 error conditions are enabled in the PCICMD, ERRCMD, and DMIUEMSK registers. Device 0 error flags are read/reset from the PCISTS, ERRSTS, or DMIUEST registers. Software clears this bit by writing a 1 to it. |
13 | 0x0 | RW/1C/V | Received Master Abort Status (RMAS) Received Master Abort Status: This bit is set when the CPU generates a DMI request that receives an Unsupported Request completion packet. Software clears this bit by writing a 1 to it. |
12 | 0x0 | RW/1C/V | Received Target Abort Status (RTAS) Received Target Abort Status: This bit is set when the CPU generates a DMI request that receives a Completer Abort completion packet. Software clears this bit by writing a 1 to it. |
11 | 0x0 | RO | Signaled Target Abort Status (STAS) Signaled Target Abort Status: The CPU will not generate a Target Abort DMI completion packet or Special Cycle. This bit is not implemented and is hardwired to a 0. Writes to this bit position have no effect. |
10:9 | 0x0 | RO | DEVSEL# Timing Status (DEVT) DEVSEL Timing: These bits are hardwired to 00. Writes to these bit positions have no affect. Device 0 does not physically connect to PCI_A. These bits are set to 00 (fast decode) so that optimum DEVSEL timing for PCI_A is not limited by the Host. |
8 | 0x0 | RW/1C/V | Master Data Parity Error Detected (DPD) Master Data Parity Error Detected: This bit is set when DMI received a Poisoned completion from PCH. |
7 | 0x1 | RO | Fast Back to Back Capable (FB2B) This bit is hardwired to 1. Writes to these bit positions have no effect. Device 0 does not physically connect to PCI_A. This bit is set to 1 (indicating fast back-to-back capability) so that the optimum setting for PCI_A is not limited by the Host. |
6:5 | 0h | RO | Reserved |
4 | 0x1 | RO | Capabilities List (CLIST) Capability List: This bit is hardwired to 1 to indicate to the configuration software that this device/function implements a list of new capabilities. A list of new capabilities is accessed via register CAPPTR at configuration address offset 34h. Register CAPPTR contains an offset pointing to the start address within configuration space of this device where the Capability Identification register resides. |
3:0 | 0h | RO | Reserved |