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Graphics Controller Cores

The RealFast Graphics Controller provides a flexible solution, which may be implemented in Altera FPGA devices. All Graphics Controller Core variants are delivered with device drivers and software functions which are designed for minimum RAM usage and for maximum performance. These device drivers and SW functions are fully compatible with Alteras Nios IDE. Hardware and software engineers will benefit from a consistent and familiar development environment. All graphics controller cores support any XGA compatible CRT and LCD monitor with analog input trough external video DAC. Adaptation to support smaller STN/TFT screens with different timings can be made up on request.

Typical Applications

Embedded Process Control GUIs
Other control terminal GUIs
Security terminals
Measurement equipment displays
Medical instruments displays

RealFast Graphics Controller XGA Core

	24Bit (16.7M colors) Graphics Controller Core	16Bit (65536 colors) Graphics Controller Core	8Bit (256 colors) Graphics Controller Core
Datasheet	pdf	pdf	pdf
External video memory requirement	Yes Standard SRAM interface supported	Yes Standard SRAM interface supported	Yes Standard SRAM interface supported
Memory size requirement when using full screen	2.25MByte	1.5MByte	768KByte
Dynamic screen size support (visible screen area)	Yes Configured by CPU (static screen size optionally available upon request, gives 20-40% area reduction)	Yes Configured by CPU (static screen size optionally available upon request, gives 20-40% area reduction)	Yes Configured by CPU (static screen size optionally available upon request, gives 20-40% area reduction)
Indexed Color Support	No Uses 8bits for each color channel	No Five bits each are used for red and blue, and 6 bits for green	Yes Trough clolor lok up table (CLUT) CLUT can be configured by CPU and/or a initialization file
Screen refresh rate	60Hz	60Hz	60Hz
Hardware Cursor support	Will be added later in Q1 2007	Will be added later in Q1 2007	Will be added later in Q1 2007
Area usage	Altera Cyclone II Device (EP2C35F672C6) 701 LEs	Altera Cyclone II Device (EP2C35F672C6) 409 LEs	Altera Cyclone II Device (EP2C35F672C6) TBD LEs
Clock nets	System clock, 100MHz Display clock, 65MH CPU clock, up to 100MHz	System clock, 100MHz Display clock, 65MH CPU clock, up to 100MHz	System clock, 100MHz Display clock, 65MH CPU clock, up to 100MHz