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HDMI receiver with CEC improves HDTV quality

Posted: 15 Jan 2009 ?? ?Print Version ?Bookmark and Share

Keywords:HDMI? deep color feature? HDTV? CEC controller?

ADV7604

Analog Devices Inc. has expanded its Advantiv advanced TV solutions portfolio with the release of what it claims to be the first Deep Color HDMI receiver integrated with a Consumer Electronics Control (CEC) controller and analog interface.

Designed to provide 1080p video performance at Energy Star-levels of power efficiency, the ADV7604 deep color HDMI receiver with CEC matches a 12-bit Deep Color HDMI receiver with three 170MHz, 12bit ADCs, enabling Deep Color accuracy on the analog interface, while competitive components are still operating at only 8- or 10bit color depth. This high level of integration can eliminate up to five components to reduce HDTV BOM 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-chipthe 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 1W of standby power, which would fail to meet new Energy Star standards," said Bill Bucklen, director, advanced television segment, ADI. "The ADV7604 helps designers to meet the new Energy Star 3.0 specification of 1W 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."

Cost, power savings
According to new data by the Consumer Electronics Association, 89 percent of households want their next TVs to be more energy efficient. However, only 25 percent of TV models will meet the Environmental Protection Agency's revised Energy Star 3.0 specification, which took effect on Nov. 1, 2008, and requires TVs and DVD players to reduce standby power from 3W to 1W. In addition to power savings, the ADV7604 eliminates the cost of additional components, including a separate analog video digitizer, CEC controller, analog multiplexer, HDMI receiver and HDMI multiplexer; these are all add-on components that can delay product launches or cause costly system redesigns in order to meet Energy-Star power or system budget requirements.

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 unauthorized 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

In addition, the ADV7604 single-chip, analog graphics digitizer with integrated 4:1 multiplexed input Deep Color HDMI receiver and on-board CEC controller supports all HDTV formats up to 1080p and is capable of digitizing analog RGB display resolutions up to UXGA (1600 x 1200 at 60Hz). The ADV7604 HDMI inputs have high-performance cable equalizers, providing the highest picture quality over cable lengths of up to 30 meters. The new, proprietary, on-chip digital PLL delivers ultralow video- and audio-clock jitter, improving receiver performance and easing PCB layout and signal integrity management when interfacing high-speed video buses to downstream devices.

The ADV7604 analog interface enables conversion of component RGB and YPrPb video signals into a digital YCrCb or RGB pixel output stream. The HDMI receiver supports a wide range of component video standards, including 525i up to 1080p and 1250i, as well as many other high definition and Society of Motion Picture and Television Engineers standards. The ADV7604 also provides complete audio support for eight channels of I?S audio, S/PDIF digital audio output, and SACD and compressed SACD support with direct stream digital and direct stream transfer output interfaces, respectively.

The HDMI receiver also supports high bit rate audio streaming to allow recovery (and downstream processing) of compressed lossless audio formats, including Dolby TrueHD and DTS-HD master audio or DTS-HD high resolution audio. The ADV7604 supports global analog video connections, including the D-Terminal (U.S.) and D1-D5 Terminal (Japan) Component Video connectors and SCART (Europe) Component Video connector. Using ADI's complete set of software drivers, designers are able to easily integrate the ADV7604 into any application.

The ADV7604 dual analog interface and HDMI receiver is sampling now with full production quantities available in February 2009. Manufactured on an advanced CMOS process and available in a 256-lead BGA (ball grid array) surface-mount lead-free package, the ADV7604 is specified over the over the -40C to +85C temperature range. The ADV7604 is priced at $7.95 per unit in 10,000-piece quantities.





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