Intel® Core™ Ultra Processors for H-series and U-series Platforms IOE-P I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795262 | 12/14/2023 | 001 | Public |
Chipset Initialization Register 1B1C (CPPMVRIC) – Offset 1b1c
This register contains misc. configuration related to SLP_S0# control / VR Idle.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31 | 0h | RW | CSME Power Gated Qualification Disable (MEPGQDIS) 0 = SLP_S0# assertion requires CSME to be power gated |
| 30 | 0h | RW | GbE Disconnected Qualification Disable (GBEDISCQDIS) 0 = SLP_S0# assertion requires GbE LAN to be disconnected |
| 29 | 0h | RW | Audio DSP in D3 Qualification Disable (ADSPD3QDIS) 0 = SLP_S0# assertion requires the Audio DSP controller to be in D3 |
| 28 | 0h | RW | XHCI in D3 Qualification Disable (XHCID3QDIS) 0 = SLP_S0# assertion requires the XHCI controller to be in D3 |
| 27 | 0h | RO | Reserved |
| 26 | 0h | RW | Thermal Sensor Disable Qualification Disable (TSDQDIS) 0 = SLP_S0# assertion requires the thermal sensor to be disabled |
| 25 | 0h | RW | ICC PLL Wake Block Enable (ICCPLLWBE) 0 = PMC HW never blocks ICLK PLL from being re-enabled during a dynamic ICC PLL shutdown event. |
| 24 | 0h | RO | Reserved |
| 23 | 0h | RW | Power Ungate Block Enable (PUGBEN) 0 = PMC HW does not block ME and modphy Power from being restored upon being requested to do so while SLP_S0# assertion conditions are met and until VR idle mode exit timer expires after SLP_S0# de-assertion. |
| 22 | 0h | RW | 24MHz Crystal Shutdown Qualification Disable (XTALSDQDIS) 0 = SLP_S0# assertion requires the 24MHz Crystal Oscillator to be shutdown. Once SLP_S0# is asserted, the Crystal oscillator should be kept off until PMC notifies it is allowed to be re-enabled. |
| 21:16 | 0h | RW | SRC[5:0]CLKRQ# VR Idle Enable (CLKRQ_VRI_EN) Each bit in this register deterimes whether the corresponding PCIe clock request pin (SRC[bit #]CLKRQ#) is enabled as a VR Idle break event / entry inhibitor. |
| 15:14 | 0h | RO | Reserved |
| 13 | 0h | RW | SLP_S0# Low Voltage Mode Enable (SLPS0LVEN) 0 = high speed ring oscillator (>24MHz) clocks are allowed to run when SLP_S0#=0 |
| 12 | 0h | RW | Intel® Trace Hub AON Active Request Qualification Disable (NPKAONACTREQQDIS) 0 = SLP_S0# assertion requires Intel® Trace Hub not to be requesting AON active |
| 11:9 | 0h | RW | SLP_S0# Minimum Assertion Width (SLP_S0_MIN_ASST_WDTH) 000 = 30.5us |
| 8:0 | 0h | RW | SLP_S0# De-assertion Exit Latency (SLP_S0_EXIT_LAT) This value is used in the SLP_S0# exit timer and has an RTC clk period (30.5us) granularity. |