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Combine uncompressed HD video, multichannel audio via a single digital interface

Posted: 02 Mar 2005 ?? ?Print Version ?Bookmark and Share

Keywords:royal philips electronics? philips? hdmi receiver ic? receiver ic? high-definition multimedia interface?

Royal Philips Electronics unveiled a HDMI receiver IC, along with a reference design, that will allow TV makers to combine uncompressed high-definition video and multichannel audio through a single digital interface and a tiny, user-friendly connector.

Designed for next-generation TVs, high-definition multimedia interface (HDMI) technology not only offers crisp image quality, but the use of a single cable for both audio and video that simplifies home theater system installation.

"HDMI is overtaking the digital visual interface (DVI) standard found in CE products like digital TVs, STBs and DVD players due to its multichannel audio support and smaller connector compared to the DVI specification," said Brian O'Rourke, senior analyst with In-Stat/MDR. "Approximately 3 million TV sets were installed with HDMI connectors in 2004, accounting for 18 percent of the digital TV market share. By 2006, HDMI is expected to be installed in approximately 20 million TV sets, bumping its market share to 42 percent."

Philips' TDA9975A, implemented in a reference design, passed the HDMI 1.1 Compliance Test Specification. It is the only receiver on the market that offers a low-power combination of a triple 10bit ADC input interface, dual-input HDMI receiver and high-bandwidth digital content protection (HDCP) decryption keys on a single chip, according to the company.

All these on-board features extend space and cost savings, and allow TV manufacturers to simplify the design of a TV accepting both digital HDMI input signals and legacy YPbPr/RGB analog signals. The higher integration and low power consumption of the receiver also contribute to the lifetime of TV sets.

"Philips' highly-integrated receiver will enable TV manufacturers to quickly and effortlessly ramp up production of high-definition TVs to meet the latest HDMI specifications and at the same time remain compliant with all analog standards - from PAL/NTSC interlaced to 720p and 1080i HDTV," said Bertrand Woestelandt, Philips Semiconductors' HDMI strategic marketing manager.

The availability of a reference design for Philips' TDA9975A enables TV manufacturers to include the new HDMI receiver feature in existing systems by optimizing preset input interface architectures, data bus layouts and printed-circuit board print complexity and size.

The TDA9975A reference design converts HDMI 1.1 audio/video input data streams into analog YpbPr video signals and analog L/R stereo audio signals. This board is supplied with a 7V power supply, and when connected to a 17-inch, HD-ready LCD TV, displays resolutions from 480p/576p up to 720P/1080i. Offering full system support, this reference design is available now and comes with complete software tools, flowcharts, drivers and settings.

In addition to the TDA9975A receiver, Philips is offering the TDA9974A, a dual-input HDMI receiver, and the TDA9970A, a combination of a dual-input HDMI receiver and a three-input triple 8-bit A/D converter. These receivers are pin-to-pin and software-compatible with each other.

These three parts are available in LBGA256 and SQFP208 packages. In quantities of 10,000, the TDA9975A, TDA9974A and TDA9970A receivers are priced at $16, $14 and $10, respectively.

- Bettyann Liotta


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