Intel® Core™ Ultra 200H and 200U Series Processors

Datasheet, Volume 1 of 2

ID Date Version Classification
842704 05/27/2025 Public
Document Table of Contents

PCI Power Management

The integrated GbE controller supports the Advanced Configuration and Power Interface (ACPI) specification as well as Advanced Power Management (APM). This enables the network-related activity (using an internal host wake signal) to wake up the host. For example, from S3 and S4 to S0.

The integrated GbE controller contains power management registers for PCI and supports D0 and D3 states. PCI transactions are only allowed in the D0 state, except for host accesses to the integrated GbE controller’s PCI configuration registers.

The processor controls the voltage rails into the external LAN PHY using the SLP_​LAN# pin.

  • The LAN PHY is always powered when the Host and Intel® CSME systems are running.
    • SLP_​LAN#=’1’ whenever SLP_​S3#=’1’ or SLP_​A#=’1’.
  • If the LAN PHY is required by Intel® CSME in Sx/M-Off , Intel® CSME must configure SLP_​LAN#=’1’ irrespective of the power source and the destination power state. Intel® CSME must be powered at least once after G3 to configure this.
  • If the LAN PHY is required after a G3 transition, the host BIOS must set AG3_​PP_​EN.
  • If the LAN PHY is required in Sx/M-Off, the host BIOS must set SX_​PP_​EN.
  • If the LAN PHY is not required if the source of power is battery, the host BIOS must set DC_​PP_​DIS.