Intel® Core™ Ultra Processors for H-series and U-series Platforms CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795258 | 12/14/2023 | Public |
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Link Control and Status (LINKCTRLSTS_0_2_0_PCI) – Offset 80
This register provides information on the PCIe link control and status.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:26 | 0h | RO | Reserved |
| 25:20 | 1h | RO | NEGOTIATED LINK WIDTH (NLW) Report x1 width only. |
| 19:16 | 1h | RO | CURRENT LINK SPEED (LINKSPD) Report Gen1 speed only. |
| 15:8 | 0h | RO | Reserved |
| 7 | 0h | RW | EXTENDED SYNC (EXTSYNC) R/W scratch pad (no effect on agent) |
| 6 | 0h | RW | COMMON CLK CFG (CCLKCFG) R/W scratch pad (no effect on agent). |
| 5 | 0h | RO | Reserved |
| 4 | 0h | RO | LINK DISABLE (LINKDIS) This bit is reserved on endpoints. |
| 3 | 0h | RW | READ COMP BOUNDARY (RCB) Read Completion Boundary (RCB) - Functions that do not implement this feature must hardware the bit to 0. |
| 2 | 0h | RO | Reserved |
| 1:0 | 0h | RW | ASPM CONTROL (ASPMCTRL) R/W scratch pad (no affect on agent). |