ADV7441A View Datasheet(PDF) - Analog Devices

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ADV7441A

10-Bit Integrated, Multiformat SDTV/HDTV Video Decoder, RGB Graphics Digitizer, and 2:1 Multiplexed HDMI/DVI Interface

Analog Devices 

COMPONENT PROCESSOR (CP)

The component processor section is capable of decoding and

digitizing a wide range of component video formats in any color

space. Component video standards supported by the CP are

525i, 625i, 525p, 625p, 720p, 1080i, 1080p, 1250i, VGA up to

UXGA at 60 Hz, and many other standards.

The CP section of the ADV7441A contains an AGC block. This

block is followed by a digital clamp circuit that ensures that the

video signal is clamped to the correct blanking level. Automatic

adjustments within the CP include gain (contrast) and offset

(brightness); however, manual adjustment controls are also

supported. If no embedded synchronization is present, the

video gain can be set manually.

A fully programmable any-to-any 3 × 3 color-space converter is

placed before the CP section. This enables YPrPb-to-RGB and

RGB-to-YCrCb conversions. Many other standards of color

space can be implemented using the color-space converter.

A second fully programmable any-to-any 3 × 3 color space

converter is placed in the back end of the CP core. This color

space converter features advanced color controls such as

contrast, saturation, brightness, and hue controls.

ADV7441A

The output section of the CP is highly flexible. It can be configured

in single data rate mode (SDR) with one data packet per clock

cycle. In SDR mode, a 16-/20-bit 4:2:2 or 24-/30-bit 4:4:4 output

is possible. In these modes, HS/CS, VS/FIELD, and DE/FIELD

(where applicable) timing reference signals are provided.

The CP section contains circuitry to enable the detection of

Macrovision-encoded YPrPb signals for 525i, 625i, 525p, and

625p. It is designed to be fully robust when decoding these

types of signals.

VBI DATA PROCESSOR

VBI extraction of CGMS data is performed by the VBI data

processor (VDP) section of the AD7441A for interlaced,

progressive, and high definition scanning rates. The data

extracted is read back over the I2C interface.

For more detailed product information about the ADV7441A,

send an e-mail to video.products@analog.com or contact a local

Analog Devices sales representative.

Rev. B | Page 17 of 28

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