ZR38650

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The Zoran ZR38650 is a full-function, high performance programmable digital audio signal processor. It is today capable of real-time single-chip decoding of Dolby Digital AC-3 and MPEG2 digital surround algorithms with its standard ROM and SiliconSoftware functions. It is also today's best digital audio platform for meeting tomorrow's constantly evolving digital audio algorithm requirements. Using the proven ZR38000 architecture, it is the fourth generation audio processor made by Zoran.

Because of its programmable high performance and high level of integration, the ZR38650 is unusually flexible in meeting a wide range of system requirements at the lowest possible system cost. At the low end it can provide standard fixed decoding functions with only a DAC and an optical interface for the S/PDIF input in addition to the oscillator crystal. At the high end it canprovide eight channels of output, analog input, long-delay memories, custom operating features and the ability to be upgraded with downloaded SiliconSoftware product enhancements. Yet all of this flexibility comes without design complexity. Highly configurable standard functions with a simple command structure minimize software development, while a full set of development tools are available for the highly-custom product developer.

The ZR38650 is suitable for primarily audio applications such as Audio/Visual home theater receivers, Digital Audio Broadcast (DAB), 3-D audio, six-channel speaker systems and Karaoke processors; primarily video applications like SDTV and HDTV stereo television receivers, digital cable and satellite TV set-top boxes; and multimedia applications with both audio and video like Multimedia PCs and the Digital Video Disk (DVD) players.

The Zoran ZR38650 is the latest full-function digital audio processing member of the ZR38000 digital signal processor product line. It is especially configured with peripherals, I/O capability and software for digital audio. Today, quality digital  audio starts with a primary decoding function and adds appropriate data stream protocols and interfaces with I/O configurations to match the application. The ZR38650 has these primary decode and protocol software functions and yet has program/ data memory and processing cycles left for additional product-distinguishing features. The ZR38650 also has the necessary flexibility in system I/O and hardware configuration.

The ZR38650 is instruction-set compatible with the earlier ZR38600, but has a higher 50-MIPS processing rate. This gives the new faster 96-kHz sample rate S/PDIF decoding and increased processing cycles for additional functions. Larger internal program and data RAMs and ROM along with wide external memories accommodate today's rapidly changing needs for large complex algorithms. Other new hardware features are a programmable timer, a Z2C serial host interface and more support for the 24-bit I/O data formats.