SAA6713H

General description

The SAA6713H is a dual input single-chip Thin Film Transistor (TFT) display controller IC with analog VGA and digital DVI 1.0 standard input capabilities. Additionally, the SAA6713H includes a wide range of functions for processing and the measurement of incoming RGB data according to the requirements of an XGA TFT display.

Covered functions are accurate measurements for the horizontal and vertical input frequencies to determine the incoming video mode and advanced auto-adjustment features that provide all data for a fast and accurate adjustment of frequency, phase and gain settings. Both units are able to generate interrupts for easy interfacing with a system microcontroller with separately maskable interrupt conditions.

The input section handles incoming data up to SXGA resolution that can be downscaled individually in width and height to fit to the connected panel resolution. Independent horizontal and vertical upscaling with enhanced programmable filter possibilities provides the IC?s core functionality of high-quality scaling. Picture quality is further supported by an enhanced colour management including a 10-bit gamma correction function. A sophisticated dithering unit allows the use of low-end 6-bit panels while keeping up the high quality image impression.

An advanced OSD generator is integrated with a fixed 12 x 18 ROM font consisting of 179 ANSI characters, 77 Japanese characters, 48 multicolour icons and 48 single colour icons. In addition to these fixed size characters another 112 different border characters can be generated in any desired font size between 8 x 8 and 32 x 32 pixels. Another 38 special characters are provided particularly for multicolour slider icons that can be parametrized in size and style. For higher flexibility of the OSD appearance a downloadable mixed multicolour or single colour font with any programmable character size between 8 x 8 to 32 x 32 pixels and up to four colours per character can be used and displayed together with the predefined ROM characters. A special bitmap organized graphical OSD with up to 16 individual colours allows to include graphic items like company logos, while a double buffered OSD cursor gives the ability to use animated pointers within an on screen menu. The panel timing interface can not only drive today?s common timing controller based panel interfaces, but it has also the capability to directly drive the row and column drivers of a panel itself. An adjustable output pin ordering guarantees easy board layout with any type of panel connector.

The SAA6713H represents the first fully integrated single-chip solution for low-end monitors, offering both high quality scaling and an advanced OSD generator.

Features

• Integrated triple Analog-to-Digital Converter (ADC) for RGB analog sampling up to 110 MHz
• Integrated PLL for dot clock recovery
• Integrated single channel Digital Visual Interface (DVI) ⁽¹⁾ compliant digital serial interface up to 110 MHz dot clock
• Integrated composite sync slicer
• High-bandwidth Digital Content Protection (HDCP) ⁽²⁾
• Integrated sync-on-green separation
• Support of Super Extended Graphics Adapter (SXGA) input mode
• Independent horizontal and vertical arbitrary ratio up and downscaling
• Video mode detection
• Auto-adjustment support for sampling phase and frequency, picture alignment and colour alignment
• Advanced colour adjustment
• Integrated On Screen Display (OSD) controller with predefined and programmable font and bit-mapped graphics, as well as a hardware overlay cursor
• 10-bit gamma correction
• Support for 6-bit and 8-bit panels by temporal dithering
• Freely programmable output timing supports displays of virtually any manufacturer
• Directly interfaces row and column drivers (TCON), versatile timing generation
• Programmable output pin ordering
• Adjustable output pin ordering
• High-speed I ² C-bus interface up to 3.4 Mbits/s
• Event driven interrupt generation for easy interfacing with microcontroller software.

Block diagrams/pinning

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