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HDMI receiver integrates CEC, 12-bit ADCs

Posted: 15 Jan 2009     Print Version  Bookmark and Share

Keywords:Consumer Electronics Control  HDMI receiver 

ADV7604

Analog Devices, Inc. has developed the industry's first Deep Colour High Definition Multimedia Interface (HDMI) receiver integrated with a Consumer Electronics Control (CEC) controller and analogue interface.

Optimised to provide 1080p video performance at Energy Star-levels of power efficiency, the ADV7604 Deep Colour HDMI receiver with CEC matches a 12-bit Deep Colour HDMI receiver with three 170-MHz, 12-bit ADCs, enabling Deep Colour accuracy on the analogue interface, while competitive components are still operating at only 8-bit or 10-bit colour depth. This high level of integration can eliminate up to five components to reduce HDTV bill-of-material and power consumption costs, while delivering 1080p video performance, low standby power, seamless operation, and flawless HDMI reception.

"Traditional HDTV design requires that the TV's main system-on-chip—the digital scaler—remains powered-up when the set is off to 'wake' the TV when a remote control signal is issued. However, a digital scaler typically draws more than 1 Watt of standby power, which would fail to meet new Energy Star standards," said Bill Bucklen, director, Advanced Television Segment, Analog Devices. "The ADV7604 helps designers to meet the new Energy Star 3.0 specification of 1 Watt or less of standby power by integrating the CEC buffer and CEC control software directly into its HDMI interface driver software. A small portion of the chip remains awake to watch for CEC commands without any other HDTV systems drawing power."

The new HDMI receiver's on-chip support for high-bandwidth digital content protection (HDCP) processing and integrated software driver ensure that authentication checks for unauthorised recording take place seamlessly and without delay.

The ADV7604 and its software driver have been thoroughly tested during HDCP PlugFests and by completing HDCP- and HDMI-compliance testing, providing designers with a certified repeater software driver that can be easily ported to various controllers.

The ADV7604 single-chip, analogue graphics digitiser with integrated 4:1 multiplexed input Deep Colour HDMI receiver and on-board CEC controller supports all HDTV formats up to 1080p and is capable of digitizing analogue RGB display resolutions up to UXGA (1600 × 1200 at 60 Hz). The ADV7604 HDMI inputs have high-performance cable equalisers, providing the highest picture quality over cable lengths of up to 30 meters.

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