ZR38601
PROGRAMMABLE DIGITAL AUDIO PROCESSOR
DATA SHEET
FEATURES
■ Standard High Performance Functions in ROM
- Formatted S/PDIF receiver with up to 96 kHz sample rate
- Dolby Digital AC-3, 5.1 channel and 2 channel decoding
up to 640 Kbits per second
- Sample rates: 32 kHz, 44.1 kHz, 48 kHz or 96 kHz
- Formatted S/PDIF AC-3 and MPEG transmitter output
■ Low System Cost
- Dolby Pro Logic encoding and decoding
- MPEG1 and MPEG2 two channel decoding with MPEG2
PES stream parsing, PTS decoding and SCR handling
- Host-less operation with no glue chips
- Separate internal PLLs for DSP core and audio I/O
- No external RAM required for 5.1 Dolby AC-3/MPEG2
- 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
■ 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
- On-chip ICE support with direct PC connection
- Serial SPI, serial Z2C or 8-bit parallel host interface
- 3 serial input data ports and 4 serial data output ports
- ZR38600DB Demonstration Board with 6 analog outputs,
microphone and line inputs, and optional PC connection
DESCRIPTION
The Zoran ZR38601 is a high performance programmable digital
audio signal processor capable of real-time single-chip decoding
of Dolby Digital AC-3 5.1-channel and MPEG2 digital surround
algorithms. It is the fourth generation decoder made by Zoran,
being based on the proven ZR38000, ZR38500 and ZR38600
architectures. Hardware block floating-point makes it optimum
for Dolby AC-3 and complex digital audio signal processing
applications.
provide eight channels of output, analog input, long-delay mem-
ories, custom operating features and the ability to be upgraded
with downloaded SiliconSoftware™ product enhancements. Yet
all of this flexibility comes without design complexity. Highly con-
figurable 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 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.
Because of 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 func-
tions 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
Encoded Data
Input
Decoded Audio
Host
Processor
(Optional)
Outputs
XTAL
SPI or Z2C Serial Interface
Left
DAC
Right
Left Surround
DAC
S/PDIF
Optical
Interface
Right Surround
S/PDIF Input
ZR38601
Center
DAC
Subwoofer
DAC
Left Center
(Optional)
Right Center
General Purpose Control I/O
Figure 1. A Typical Low-Parts-Count ZR38601 System
ZORAN Corporation ■ 3112 Scott Blvd. ■ Santa Clara, CA 95054 ■ +1 (408) 919-4111 ■ FAX +1 (408) 919-4122 ■ www.zoran.com
15 February 1999
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