DisplayPort interface logic IP for FPGA video links
FPGA display-link integration — video format, clocks and protocol control
A DisplayPort interface logic core implements the display-link protocol inside a programmable device. Integration starts with the direction of video flow and the boundary between pixel processing, protocol logic and the physical transceiver. The deliverable is an IP configuration and its integration files for a specified FPGA target.
Configurable DisplayPort logic IP integrated into FPGA graphics-interface designs. This page addresses protocol-core selection and implementation boundaries within the graphics interface controller, rather than a motherboard, complete graphics card or packaged display-bridge IC. PCIe and HDMI protocol implementations require their own IP and integration specification.
FPGA video-interface development scene; the protocol IP is implemented in the programmable device, with the actual PHY, clock and decoder boundaries defined by the chosen design
Choose source or sink logic before selecting the pixel interface
AMD’s archived PG299 transmitter guide describes native-video and AXI4-Stream input configurations. Its stream configuration includes video bridging and a Video Timing Controller; the native configuration has a different sub-core boundary. Both work with a separately configured Video PHY Controller. [1]
Draw the video direction through the design. A source accepts pixels from the application and drives the display link; a sink receives the link and delivers pixels to downstream processing. Identify which side of that boundary the requested IP must implement.
Specify the pixel format, parallelism, blanking representation and transfer handshake at the application interface. Include the selected stream adapter or timing generator in the integration drawing, with ownership of its configuration and resets.
For the native or streaming transmitter design, request the generated subsystem configuration and matching PHY settings together. Retain the exact tool release and target-device selection so that a later rebuild reproduces the intended interface boundary.
02
Separate link timing, pixel timing and buffer capacity
Microchip’s DS50003546C receiver guide separates lane reception, video extraction, AUX handling and an optional video re-timer. It assigns video-clock recovery outside the receiver IP, or permits a sufficiently fast fixed output clock. A re-timer reconstructing sync timing is a separate function from recovering that clock. [2]
List every clock’s producer, consumer, expected relationship and reset domain. Provide the clock constraints and state which clocks remain available during cable disconnection or link recovery.
For the non-frame-buffer receiver arrangement described in PG300, AMD calls for stream-clock reconstruction from the Main Stream Attributes and an external PLL meeting the display standard’s requirements. Keep that arrangement distinct from its frame-buffer clocking option. [3]
Agree how the implemented design will report or recover from buffer errors, source mode changes and a downstream consumer that cannot accept pixels. Keep a record of the video modes and back-pressure conditions exercised during validation.
Receiver integration choice
Consequence to check
Output buffer
Microchip’s line-buffer configuration must exceed the line pixel count. Record the selected depth against the actual video mode. [2]
Application pixel interface
Its PIXEL_DATA_O port supports 48, 96 or 192 bits for one, two or four parallel pixels; these are port layouts for this IP, rather than a generic core bus-width range. [2]
Clock ownership
AMD’s PG300 distinguishes link, video and host clocks; an inaccurate video clock can cause FIFO overflow or underflow. [3]
03
Assign link policy, training and optional decoder responsibilities
In PG300, DPCD register commands control receiver link training; the functional datapath is blocked during training while the controller monitors the PHY. AMD separately documents interfaces to external Rambus DSC and FEC decoders. Specify the selected decoder and its integration boundary when those features are required. [3]
Microchip places Link Policy Maker and Stream Policy Maker responsibilities in the application software. Ask the IP provider which policy functions are supplied, which remain application work, and how the software package matches the generated hardware. [2]
Describe the expected sequence from configured hardware to a trained link and valid video. Allocate control of HPD, capability information, training requests and error reporting between application software, protocol logic and PHY management.
Request the delivered RTL or netlist form, configuration files, constraints, simulation material, driver sources and permitted project uses. Identify separately licensed or separately delivered PHY, content-protection, compression and correction blocks; confirm the exact selected feature set in the provider’s release documentation.
04
Display-link IP configuration and integration handover
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Video direction: [source or sink, upstream and downstream application blocks]
FPGA build: [device family/part, speed grade, tool release, IP revision and delivery/licence form]
Pixel contract: [native or stream interface, format, pixels per transfer, blanking and handshake]
Physical link: [PHY/transceiver selection, lane configuration, link modes, AUX and HPD ownership]
Clock and storage: [clock producers, constraints, recovery method, frame/line buffers and reset domains]
Optional blocks: [decoder/content-protection selections, supplied boundaries and software policy duties]
Verification package: [simulation, mode changes, retraining, buffer-error tests and reproducible build files]
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Compiled and source-reviewed by the CNFX editorial team.
Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review
· Page last updated 23 October 2026
Buyer questions
Does selecting AXI4-Stream leave the transmitter architecture unchanged?
Check the configured subsystem. The PG299 example adds video bridging and timing generation for the streaming input arrangement; its native-video arrangement differs. [1]
Does a video re-timer supply the recovered pixel clock?
Keep these duties separate. Microchip describes optional sync re-timing while placing video-clock recovery outside its receiver IP, or using a sufficiently fast fixed output clock. [2]
Is an FEC decoder automatically inside the protocol core?
Confirm the implementation. AMD’s PG300 describes interfaces and processing for connecting external Rambus FEC and DSC decoder IP. [3]
Sources and evidence scope
Sources checked 2026-10-23T19:22:51+08:00. The archived PG299 transmitter PDF and current PG300 receiver documentation describe different AMD configurations. Microchip’s receiver guide provides a separate implementation example. Their clock, software and decoder boundaries belong to the named IP releases.
