• Digital Visual Interface (DVI) Transmitter up to 165M pixels/second
• DVI low jitter PLL with Emission Reduction
• DVI hot plug detection
• Analog YPrPb outputs for HDTV
• HDTV support for 525p, 625p, 720p, 1080i and 1080p
• * Macrovision™copy protection support for 525p and 625p (CH7303 only)
• Programmable digital input 16-bit D[15:0] interface supporting RGB (15, 16, 24 or 30 bit) and YCrCb input data formats
• Can output either RGB or YPrPb
• TV / Monitor connection detection
• Programmable power management
• Three 10-bit video DAC outputs
• Fully programmable through serial port
• Complete Windows and DOS driver support
• Low voltage interface support to graphics device
• Offered in a 64-pin LQFP package

* CH7303 is Macrovision™ version of CH7302.

Description

The CH7302/CH7303 is a Display Controller device which accepts a digital graphics input signal, and encodes and transmits data through a DVI link (DFP can also be supported), a VGA port (analog RGB), or a HDTV port (YPrPb). The CH7302/CH7303 device can encode video signals and generate synchronization signals for analog HDTV interface standards and graphics standards up to UXGA resolution. The CH7302/CH7303 device accepts data over one 16-bit wide variable voltage data port which supports different data formats including RGB and YCrCb.

The CH7302/CH7303 DVI processor includes a low jitter PLL for generation of high frequency serialized clock, and all circuitry required to encode, serialize and transmit data. The CH7302/CH7303 is able to drive a DFP display at a pixel rate of up to 165MHz. No scaling is performed on both the input data and the output data to the DVI device.

In addition to DVI modes, bypass modes are included which perform color space conversion to HDTV standards and generate and insert HDTV sync signals, or output VGA style analog RGB for use as a CRT DAC.

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