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

Digital Display Interface DDI Signals

Digital Display Interface DDI Signals

Signal Name

Type

Description

DDIA_​TXP[3:0]

DDIA_​TXN[3:0]

O

Digital Display Interface A (DDIA): Digital Display Interface main link transmitter lanes.

DDIA_​AUXP

DDIA_​AUXN

I/O

Digital Display Interface A (DDIA): DisplayPort Auxiliary: Half-duplex, bidirectional channel consist of one differential pair.

GPP_​E08/DDPA_​CTRLDATA/SATALED#/USB-C_​GPP_​E08

GPP_​E22/DDPA_​CTRLCLK/DNX_​FORCE_​RELOAD/USB-C_​GPP_​E22

I/O

Digital Display Interface A (DDIA): HDMI Graphics Management Bus (GMBUS).

GPP_​E14/DDSP_​HPDA/DISP_​MISCA/USB-C_​GPP_​E14

I

Digital Display Interface A (DDIA): Hot Plug Detect (HPD).

VDDEN

O

Digital Display Interface A (DDIA): eDP Panel power control enable signal.

BKLTEN

O

Digital Display Interface A (DDIA): eDP Panel back-light control enable signal.

BKLTCTL

O

Digital Display Interface A (DDIA): eDP Panel back-light control Pulse Wide Modulation (PWM) signal.

DDIB_​TXP[3:0]

DDIB_​TXN[3:0]

O

Digital Display Interface B (DDIB): Digital Display Interface main link transmitter lanes.

DDIB_​AUXP

DDIB_​AUXN

I/O

Digital Display Interface B (DDIB): DisplayPort Auxiliary: Half-duplex, bidirectional channel consist of one differential pair.

GPP_​H17/DDPB_​CTRLDATA/USB-C_​GPP_​H17

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

I/O

Digital Display Interface B (DDIB): HDMI Graphics Management Bus (GMBUS).

GPP_​B16/DDSP_​HPDB/DISP_​MISCB/USB-C_​GPP_​B16

I

Digital Display Interface B (DDIB): Hot Plug Detect (HPD).

GPP_​B17/VDDEN2/USB-C_​GPP_​B17

O

Digital Display Interface B (DDIB): eDP Panel power control enable signal.

GPP_​D01/I2C3A_​SDA/BKLTEN2/ISH_​I2C2A_​SDA/USB-C_​GPP_​D01

O

Digital Display Interface B (DDIB): eDP Panel back-light control enable signal.

GPP_​D02/I2C3A_​SCL/BKLTCTL2/ISH_​I2C2A_​SCL/USB-C_​GPP_​D02

O

Digital Display Interface B (DDIB): eDP Panel back-light control Pulse Wide Modulation (PWM) signal.

DDI_​RCOMP

Analog

DDI IO Compensation resistors.

GPP_​E14/DDSP_​HPDA/DISP_​MISCA/USB-C_​GPP_​E14

GPP_​B16/DDSP_​HPDB/DISP_​MISCB/USB-C_​GPP_​B16

GPP_​B09/DDSP_​HPD0/DISP_​MISC1/USB-C_​GPP_​B09

GPP_​B10/DDSP_​HPD1/DISP_​MISC2/USB-C_​GPP_​B10

GPP_​B11/USB_​OC1#/DDSP_​HPD2/DISP_​MISC3/USB-C_​GPP_​B11

GPP_​B14/USB_​OC2#/DDSP_​HPD3/DISP_​MISC4/USB-C_​GPP_​B14

O

DDI Misc signals.

Notes:
  • Auxiliary Channel (AUX CH) is a half-duplex bidirectional channel used for link management and device control. AUX CH is an AC coupled differential signal.

  • GMBUS follows I2C Protocol.