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| PROGRAMMABLE DIGITAL AUDIO PROCESSOR Solutions Zoran Corporation 3112 Scott Boulevard Santa Clara, CA 95054-3317 T e l 408.919.4 1 1 1 Fax 408.919.4122 www.zoran.com on a Chip ZR38601 Product Brief Benefits Overview The Zoran(R) (ZR38601) is a high-performance, programmable digital audio sig-nal processor capable of real-time, single-chip decoding of Dolby Digital 5.1- channel and MPEG-2 digital surround algorithms. It is the fourth generation decoder made by Zoran, based on the proven ZR38600 architectures. The hardware block floating-point makes it optimum for Dolby Digital and complex digital audio signal processing applications. Due to its programmable high-performance and high level of integration, the ZR38601 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 can pro- vide eight channels of output, analog input, long-delay memories, custom operating features, and the ability to be upgraded with downloaded SiliconSoftware(R) 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 ZR38601 is suitable primarily for audio applications such as Audio/Visual home theater receivers, Digital Audio Broadcast (DAB), 3-D audio, six-channel speaker systems, and Karaoke processors; video applications like SDTV and HDTV stereo television receivers and digital cable, and satellite TV settop boxes; and multimedia PC applications such as DVD players. Encoded Data Input XTAL Host Processor (Optional) Decoded Audio Outputs SPI or Z2C Serial Interface Left Right Left Surround Right Surround Center Subwoofer Left Center Right Center DAC S/PDIF Optical Interface DAC ZR38601 DAC DAC (Optional) S/PDIF Input General Purpose Control I/O Figure 1. A typical Low-Parts-Count ZR38601 System Key Features Standard High Performance Functions in ROM - Dolby Digital, 5.1-channel and 2-channel decoding up to 640 Kbits per second - Dolby Pro Logic encoding and decoding - MPEG-1 and MPEG-2 two channel decoding with MPEG-2 - PES stream parsing, PTS decoding and SCR handling Downloadable SiliconSoftware Functions - Aureal A3D, Dolby Virtual Surround, Harman VMAx - QSound QSurround, Spatializer N-2-2, Home THX - SRS TruSurround, music modes - Bass Management and multi-channel downmix Flexible Input/Output - Serial and/or parallel data stream I/O - Serial SPI, serial Z2C or 8-bit parallel host interface - 3 serial input data ports and 4 serial data output ports - Formatted S/PDIF receiver with up to 96 kHz sample rate - Sample rates: 32 kHz, 44.1 kHz, 48 kHz or 96 kHz - Formatted S/PDIF Dolby Digital and MPEG transmitter output Low System Cost - Host less operation without glue chips - Separate internal PLLs for DSP core and audio I/O - No external RAM required for 5.1 Dolby Digital/MPEG-2 - Wait-state generation for low-cost external memory - 100-pin Plastic Quad Flat Pack (PQFP) packaging - 3.3 V supply with 5 V compatible I/O for low power Software and Hardware PC Development Environment - Assembler/Linker/Simulator - On-chip ICE support with direct PC connection - ZR38600DB Demonstration Board with 6 analog outputs, microphone and line inputs, and optional PC connection 12/00-LD1500 ZR38601-PB-3.0 PROGRAMMABLE DIGITAL AUDIO PROCESSOR ZR38601 General Description The Zoran ZR38601 is the latest digital audio processing member of the ZR38000 high-performance, programmable 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, adds appropriate data stream protocols, and interfaces with I/O configurations to match the application. The ZR38601 has these primary decode and protocol software functions yet has processing cycles left for additional product-distinguishing features. The ZR38601 also has the necessary flexibility in system I/O and hardware configuration. The ZR38601 is pin and instruction-set compatible with the earlier ZR38600, but with a higher 50-MIPS processing rate and larger internal program and data RAMs and ROM. These features provide new 96-kHz sample rate S/PDIF decoding, and increased processing cycles and memories for additional functions. New hardware features are a programmable timer, a Z2C serial host interface, and more support for the 24-bit I/O data formats. Functions Dolby Digital and MPEG with variations are the primary decoding functions in use today. The ZR38601 has these and their associated test function with the required set-up, operation, and system functions to make them usable in an end-user product. In addition, an ever increasing number of SiliconSoftware functions can add special enhancing and differentiating features to products. Primary Decoding and Test Functions Dolby Digital Dolby DigitalThe figure shows the simultaneous S/PDIF input and 5.1-channel Digital-to-Analog Converter (DAC) outputs of this primary digital audio function, the six-channel Dolby Digital decoder. PCM + Pro Logic With two-channel PCM inputs, the choice of functions is four-channel Pro Logic decoding or two-channel stereo mixing, including upmixing from only one input channel to two. Left Two-Channel PCM Input Pro Logic Decoder Right Center Surround S/PDIF One or Two Channel PCM Left PCM Mixer Right S/PDIF MPEG The MPEG-1 decoder accepts either MPEG-1 or MPEG-2 input streams and produces either Pro Logic DAC outputs or two-channel stereo in DAC form. Left Six- or TwoChannel Dolby Digital Stream Two-Channel Dolby Digital Decoder Pro Logic Decoder Right Center Surround S/PDIF Six- or TwoChannel Dolby Digital Stream Dolby Digital Decoder Lt (Pro Logic) Rt (Pro Logic) S/PDIF Pink Noise A six-channel pink pseudo-random noise generator function is included for user testing of speaker balance in their listening space. Individual speakers can be enabled in any combination. Left Right Left Six-Channel Dolby Digital Stream Six-Channel Dolby Digital Decoder Right Left Surround Right Surround Center Subwoofer S/PDIF Pink Noise Generator Left Surround Right Surround Center Subwoofer Or with four channels of Pro Logic output in either of two DAC forms: four channels directly or to an analog Pro Logic decoder Left Two Channel MPEG-1/MPEG-2 Stream Two-Channel MPEG-1 Decoder Pro Logic Decoder Right Center Surround S/PDIF Two Channel MPEG-1/MPEG-2 Stream Left MPEG-1 Decoder Right S/PDIF SiliconSoftware Functions SiliconSoftware is a group of additional functions for the ZR38601 provided by Zoran or third-party suppliers that can add special features now or provide new functions in the future. Zoran and SiliconSoftware are registered trademarks of Zoran Corporation. All other trademarks are property of their respective owners. For more information, contact Zoran's Santa Clara office or the office nearest you: Israel Zoran Microelectronics Ltd. Advanced Technology Ctr. P.O. Box 2495 Haifa, 31024 Israel Te l : +972-4-8545-777 Fax: +972-4-8551-551 China Zoran China Office Suite 2507 Electronics Science & Tech Building 2070 Central Shennan Rd. Shenzhen, Guangdong, 518031 P.R. China Te l : +86-755-378-0319 Fax: +86-755-378-0852 Japan Zoran Japan Office 2-2-8 Roppongi, Minato-ku Tokyo 106-0032, Japan Te l : +81-03-5574-7081 Fax: +81-03-5574-7156 Taiwan Zoran Taiwan Office 4F-1, No. 5, Alley 22 Lane 513, Reikuang Rd. Taipei, Taiwan R.O.C. Te l : +886-2-2659-9797 Fax: +886-2-2659-9595 Canada Zoran Toronto Lab 2175 Queen St. East, Suite 302 Toronto, Ontario M4E 1E5 Canada Te l : (416) 690-3356 Fax: (416) 690-3363 12/00-LD1500 ZR38601-PB-3.0 |
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