DC Glossary

On this page, we try to keep track of acronyms related to the display component. If you do not find what you are looking for, look at the ‘AMDGPU Glossary’; if you cannot find it anywhere, consider asking in the amdgfx and update this page.

ABM

Adaptive Backlight Modulation

APU

Accelerated Processing Unit

ASIC

Application-Specific Integrated Circuit

ASSR

Alternate Scrambler Seed Reset

AZ

Azalia (HD audio DMA engine)

BPC

Bits Per Colour/Component

BPP

Bits Per Pixel

Clocks

  • PCLK: Pixel Clock

  • SYMCLK: Symbol Clock

  • SOCCLK: GPU Engine Clock

  • DISPCLK: Display Clock

  • DPPCLK: DPP Clock

  • DCFCLK: Display Controller Fabric Clock

  • REFCLK: Real Time Reference Clock

  • PPLL: Pixel PLL

  • FCLK: Fabric Clock

  • MCLK: Memory Clock

CRC

Cyclic Redundancy Check

CRTC

Cathode Ray Tube Controller - commonly called “Controller” - Generates raw stream of pixels, clocked at pixel clock

CVT

Coordinated Video Timings

DAL

Display Abstraction layer

DC (Software)

Display Core

DC (Hardware)

Display Controller

DCC

Delta Colour Compression

DCE

Display Controller Engine

DCHUB

Display Controller HUB

ARB

Arbiter

VTG

Vertical Timing Generator

DCN

Display Core Next

DCCG

Display Clock Generator block

DDC

Display Data Channel

DIO

Display IO

DPP

Display Pipes and Planes

DSC

Display Stream Compression (Reduce the amount of bits to represent pixel count while at the same pixel clock)

dGPU

discrete GPU

DMIF

Display Memory Interface

DML

Display Mode Library

DMCU

Display Micro-Controller Unit

DMCUB

Display Micro-Controller Unit, version B

DPCD

DisplayPort Configuration Data

DPM(S)

Display Power Management (Signaling)

DRR

Dynamic Refresh Rate

DWB

Display Writeback

FB

Frame Buffer

FBC

Frame Buffer Compression

FEC

Forward Error Correction

FRL

Fixed Rate Link

GCO

Graphical Controller Object

GSL

Global Swap Lock

iGPU

integrated GPU

ISR

Interrupt Service Request

ISV

Independent Software Vendor

KMD

Kernel Mode Driver

LB

Line Buffer

LFC

Low Framerate Compensation

LTTPR

Link Training Tunable Phy Repeater

LUT

Lookup Table

MALL

Memory Access at Last Level

MC

Memory Controller

MPC/MPCC

Multiple pipes and plane combine

MPO

Multi Plane Overlay

MST

Multi Stream Transport

NBP State

Northbridge Power State

NBIO

North Bridge Input/Output

ODM

Output Data Mapping

OPM

Output Protection Manager

OPP

Output Plane Processor

OPTC

Output Pipe Timing Combiner

OTG

Output Timing Generator

PCON

Power Controller

PGFSM

Power Gate Finite State Machine

PSR

Panel Self Refresh

SCL

Scaler

SDP

Scalable Data Port

SLS

Single Large Surface

SST

Single Stream Transport

TMDS

Transition-Minimized Differential Signaling

TMZ

Trusted Memory Zone

TTU

Time to Underflow

VRR

Variable Refresh Rate

UVD

Unified Video Decoder