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T e l 408.919.4 1 1 1
(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 genera-
tion 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 require-
ments at the lowest possible system cost. At the low end, it can provide stan-
dard 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
product enhancements. Yet all of this flexibility comes with-
out design complexity. Highly configurable standard functions with a simple
command structure minimize software development, while a full set of devel-
opment 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-chan-
nel speaker systems, and Karaoke processors; video applications like SDTV
and HDTV stereo television receivers and digital cable, and satellite TV set-
top boxes; and multimedia PC applications such as DVD players.
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
- 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
- On-chip ICE support with direct PC connection
- ZR38600DB Demonstration Board with 6 analog outputs,
microphone and line inputs, and optional PC connection
3112 Scott Boulevard
Santa Clara, CA 95054-3317
General Purpose Control I/O
SPI or Z2C Serial Interface
Figure 1. A typical Low-Parts-Count ZR38601 System
Encoded Data Input
Decoded Audio Outputs
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 con-
figurations 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 flexibili-
ty 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 addi-
tional functions. New hardware features are a programmable timer, a Z2C
serial host interface, and more support for the 24-bit I/O data formats.
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.
Or with four channels of Pro Logic output in either of two DAC forms: four
channels directly or to an analog Pro Logic 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.
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
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.
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.
Dolby Digital Stream
One or Two
Six- or Two-
Lt (Pro Logic)
Rt (Pro Logic)
Six- or Two-
Zoran Microelectronics Ltd.
Advanced Technology Ctr. P.O.
Haifa, 31024 Israel
Te l : +972-4-8545-777
Zoran China Office
Electronics Science &
2070 Central Shennan Rd.
518031 P.R. China
Te l : +86-755-378-0319
Zoran Japan Office
2-2-8 Roppongi, Minato-ku
Tokyo 106-0032, Japan
Te l : +81-03-5574-7081
Zoran Taiwan Office
4F-1, No. 5, Alley 22
Lane 513, Reikuang Rd.
Taipei, Taiwan R.O.C.
Te l : +886-2-2659-9797
Zoran Toronto Lab
2175 Queen St. East,
M4E 1E5 Canada
Te l : (416) 690-3356
Fax: (416) 690-3363
For more information, contact Zoran's Santa Clara office or the office nearest you:
Zoran and SiliconSoftware are registered trademarks of Zoran Corporation. All other trademarks are property of their respective owners.