Abstract
This paper describes the architecture, functionality, and design of NX-2700, a digital television and media processor chip from Philips Semiconductors. The NX-2700 is the second generation of an architectural family of programmable multimedia processors targeted at the digital television (DTV) markets, including the United States Advanced Television Systems Committee (ATSC) DTV-standard-based applications. The chip not only supports all of the 18 ATSC formats from standard-definition to wide-angle, high-definition video, but has also the power to handle high-definition television (HDTV) video and audio source decoding (high-level MPEG-5 AC-3 and ProLogic audio, closed captioning, etc.) as well as the flexibility to process advanced interactive services. NX-2700 is a programmable processor with a very powerful, general-purpose very long instruction word (VLIW) central processing unit (CPU) core that implements many nontrivial multimedia algorithms, coordinates all on-chip activities, and runs a small real-time operating system. The CPU core, aided by an array of peripheral devices (multimedia coprocessors and input-output units) and high-performance buses, facilitates concurrent processing of audio, video, graphics, and communication-data.
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