Intel® Core™ Ultra Processor

Datasheet, Volume 1 of 2
Supporting Intel® Core™ Ultra Processor for U/H/U-Type4-series Platforms, formerly known as Meteor Lake

ID Date Version Classification
792044 05/09/2025 Public
Document Table of Contents

Signal Description

Signal Name

Type

Description

Processor

PCIE_​[12:1]_​TXN

PCIE_​[12:1]_​TXP

O

PCI Express* Differential Transmit Pairs

These are the PCI Express* based outbound high-speed differential signals

U Type4

PCIE_​[12:1]_​RXN

PCIE_​[12:1]_​RXP

I

PCI Express* Differential Receive Pairs

These are the PCI Express* based inbound high-speed differential signals

PCIE_​1_​RCOMP

PCIE_​2_​RCOMP

A

PCI Express* PHY Impedance Compensation Inputs

PCIE_​[20:1]_​TXN

PCIE_​[20:1]_​TXP

O

PCI Express* Differential Transmit Pairs

These are the PCI Express* based outbound high-speed differential signals

U

PCIE_​[20:1]_​RXN

PCIE_​[20:1]_​RXP

I

PCI Express* Differential Receive Pairs

These are the PCI Express* based inbound high-speed differential signals

PCIE_​1_​RCOMP

PCIE_​2_​RCOMP

PCIE_​3_​RCOMP

PCIE_​5_​RCOMP

A

PCI Express* PHY Impedance Compensation Inputs

PCIE_​[28:1]_​TXN

PCIE_​[28:1]_​TXP

O

PCI Express* Differential Transmit Pairs

These are the PCI Express* based outbound high-speed differential signals

H

PCIE_​[28:1]_​RXN

PCIE_​[28:1]_​RXP

I

PCI Express* Differential Receive Pairs

These are the PCI Express* based inbound high-speed differential signals

PCIE_​1_​RCOMP

PCIE_​2_​RCOMP

PCIE_​3_​RCOMP

PCIE_​5_​RCOMP

A

PCI Express* PHY Impedance Compensation Inputs

GPP_​H16/DDPB_​CTRLCLK/PCIE_​LINK_​DOWN /USB-C_​GPP_​H16

O

PCI Express* Link Down Debug Signal

PCIe link failure debug signal. PCIe Root Port(s) will assert this signal when a link down event occurs and is detected. For example when a link fails to train during an L1 sub-state exit event.

U/H

U Type4