Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
| ID | Date | Version | Classification |
|---|---|---|---|
| 615146 | 08/09/2019 | 1.2 | Public |
SLP_S0# Debug 1 (SLP_S0_DBG_1) – Offset 10b8
This register captures the state of low power events involved in SLP_S0# entry to assist with debug. The status is captured as part of C10 entry(once CPU has entered package C10).
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 30:8 | - | - | Reserved
|
| 7 | 0b | RO/V | PCIe external CLKREQs deasserted (PCIE_CLKREQS_OFF_STS) This bit when 1 indicates that all external PCIe clock request pins are inactive. |
| 6 | 0b | RO/V | LPC output clocks gated status (LPC_CLKS_GATED_STS) This bit when 1 indicates that external LPC clocks are gated. |
| 5 | 0b | RO/V | Crystal OFF Status (XOSC_OFF_STS) This bit when 1 indicates that crystal oscillator has shut down . |
| 4 | 0b | RO/V | Root PLLs off (MAIN_PLL_OFF_STS) This bit when 1 indicates that main PLL is off |
| 3 | 0b | RO/V | CPU BCLK PLL off (OC_PLL_OFF_STS) This bit when 1 indicates that OC PLL is off |
| 2 | 0b | RO/V | Audio PLL OFF Status (AUDIO_PLL_OFF_STS) This bit when 1 indicates that Audio PLL is off |
| 1 | 0b | RO/V | USB2 PLL OFF Status (USB2_PLL_OFF_STS) This bit when 1 indicates that USB2 PLL is off |
| 0 | - | - | Reserved
|