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Smart switches integrate HDMI 1.4 support

Posted: 02 Oct 2009 ?? ?Print Version ?Bookmark and Share

Keywords:switch? HDMI 1.4? HDTV? cable?

NXP Semiconductors has unveiled intelligent switches that support HDMI 1.4, a specification released in June. The NXP TDA19997 and TDA19998 smart switches support the Audio Return Channel (ARC) feature, an option introduced in the HDMI 1.4 release, which reduces the number of cables required to deliver audio upstream for processing and playback. Building on the success of previous HDMI smart switches from NXP, the TDA19997 and TDA19998 also include support for all mandatory 3D over HDMI features.

The ARC specified in HDMI 1.4 enables HDTVs directly receiving audio and video content to send the audio stream to an amplification system over the HDMI cable, eliminating the need for an extra cable. The NXP TDA19997 and TDA19998 smart switches also include built-in auto-adaptive equalizers that can handle up to four HDMI 1.4 inputs, automatically maintaining A/V quality over HDMI cables up to 30m in length. Their highly integrated design offers a compelling solution that eliminates the need for external components, reducing the overall BOM for TV manufacturers while delivering an enhanced viewing experience. The TDA19997 and TDA19998 are embedded with five EDID extensions for HDMI and VGA, as well as high levels of ESD protection.

"By the end of this year, nearly one billion HDMI-ready systems will have been shipped worldwide. With the Audio Return Channel, HDTV viewers will be able to enjoy top quality sound, without cable clutter," said Denis Marsault, media interfaces product line, NXP. "By bringing our HDMI 1.4 smart switches to market quickly, we're demonstrating our commitment to helping TV manufacturers deliver exceptional HD entertainment with the most energy-efficient solutions that fit easily into the home theater environment."

The TDA19998 smart switches take advantage of NXP's patented F3 (Fast, Fair and Faithful) architecture, which guarantees fast port switching between HDMI devices while keeping a secured HDCP-protected HDMI stream at the output. The F3 architecture also enables best-in-class power efficiency of all system in both active and stand-by modes.

The NXP TDA19997 and TDA19998 comprise the second generation of NXP's highly popular HDMI smart switches, and are part of a wide portfolio of highly scalable solutions for the digital home, enabling TV makers to target a broad audiencefrom the most price-sensitive segments to the most feature-oriented markets. The TDA19997 and TDA19998 are pin-to-pin compatible with previous generation smart switches from NXP, and provide TV makers with unprecedented flexibility in adapting to end user demand in terms of price, features and power consumption, as well as operator and content providers' requirements for security and performance.

Engineering samples of the TDA19997 are available immediately from NXP. The TDA19998 smart switches will be available in mid-October.

For application notes on switches click here.





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