Multilayer Configurable Display Controller

Overview

The IQ-DispML is a multi-layer, fully software configurable display controller IP core. It performs continuous refresh of graphical flat panel displays (TFT LCD, AMOLED) from the designated frame buffers located in a memory device mapped to the system bus.

Multiple layers are blended into a single image, which is outputted to the display. SDRAM and SRAM devices are supported as frame buffers, depending on the bandwidth requirements.

IQ-DispML is designed to provide an optimum tradeoff of performance and resource utilization in FPGA devices while retaining a high degree of configurability. The IP core can be additionally scaled down at compile time by reducing the number of layers, bus widths and fixing timing parameters, allowing the user to fully optimize the IQ-DispML for a specific configuration.

Key Features

Fully programmable clock and timing control for flat panel displays with progressive scanning
Support for resolutions up to 4096x4096
Completely variable timing parameters, for standard or specific display resolutions
Support for 8,16, 18 or 24 bit RGB output color depth
Standard or multiplexed display data bus
Display power control lines
Interrupt generation on vertical sync for software synchronization
Frame buffer management Double buffering to reduce image flicker

Variable frame buffer organization with software-configurable memory stripe
Image scroll via unconstrained frame buffer addressing
Frame buffer color depth support

Alpha blending of all layers, with per-layer additional transparency (“layer fading”)
Independent positioning and dimensioning of all layers
Compile-time configuration for reducing resource cost by fixing parameters
Support for multiple clock domains to ease timing closure
Integrated DMA memory master supporting low-overhead burst transfers
Configuration bus slave interface with address-mapped registers

Block Diagram

Applications

Vending machines
Video monitors
Automotive infotainment
Medical instrumentation
Human machine interface (HMI) systems
Mobile devices

Technical Specifications

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