The VGA accepts video data and works with a digital/analog converter (DAC) to drive standard VGA and SVGA displays. The core’s system interface uses the AMBA AHB bus. It accepts two different standard input formats – 15-bit (5:5:5) and 24-bit (8:8:8) RGB – and produces 24-bit RGB pixel data.

Key Features:

• Generates color and control data for standard VGA/SVGA displays
• Works in conjunction with external video DAC such as Analog Devices’ ADV7120
• Supports resolution up to 1024 x 1024 (higher resolutions available upon request)
• Accepts two standard video data formats:
  • 24-bit RBG (8:8:8)
  • 15-bit RBG (5:5:5)
• Outputs standard 8:8:8 24-bit RGB video (converts from 5:5:5 if necessary)
• Display functions with hardware support:
  • Scroll (in horizontal and vertical directions)
  • Sub-screen display (any position)
  • Horizontal flip screen
• Fully configurable monitor frequencies and aspect ratios
• 32-bit data path
• Configurable internal FIFO
• Integrated Test mode: core generates color bar without any AHB bus transactions
• Internal, event-stimulated, interrupt request generation with masking capability
• Dedicated unidirectional DMA controller with burst transaction support
• Built-in Power Save mode
• Requires an external pixel clock.
• Integrated with AMBA™ bus:
  • AMBA™ AHB slave unit interfaces with host controller
  • AMBA™ AHB master unit interfaces with host memory

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