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ZR38650 の電気的特性と機能

ZR38650のメーカーはZoranです、この部品の機能は「Programmable Digital Audio Processor」です。


製品の詳細 ( Datasheet PDF )

部品番号
ZR38650
部品説明
Programmable Digital Audio Processor
メーカ
Zoran
ロゴ

Zoran ロゴ 




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ZR38650 Datasheet, ZR38650 PDF,ピン配置, 機能
DATA SHEET
ZR38650
PROGRAMMABLE DIGITAL AUDIO PROCESSOR
FEATURES
s Full-Function Digital Audio Processor Hardware
- 50 MIPS performance with multi-operation instructions
- Large internal RAMs/ROM plus low-cost external memory
- Wide selection of on-chip digital audio peripherals
- Flexible interface for host or no-host operation
s Standard Software Functions in ROM
- Dolby Digital AC-3, 5.1 channel and 2 channel decoding
up to 640 Kbits per second
- Dolby Pro Logic encoding and decoding
- MPEG1 and MPEG2 two channel decoding with MPEG2
PES stream parsing, PTS decoding and SCR handling
s Downloadable SiliconSoftware™ Functions
- Tomorrow’s ever-changing standards plus today’s:
- Aureal A3D, Dolby Virtual Surround, Harman VMAx
- QSound QSurround™, Spatializer N-2-2™, Home THX
- SRS TruSurround, Music Modes, Bass Management
s 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 AC-3 and MPEG transmitter output
s Low System Cost
- 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
- 144-pin Plastic Thin Quad Flat Pack (TQFP) package
- 3.3 V supply with 5 V compatible I/O for low power
DESCRIPTION
The Zoran ZR38650 is a full-function, high performance pro-
grammable 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 architec-
ture, 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 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
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 config-
urable 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.
Encoded Data
Input
S/PDIF Input
S/PDIF
Optical
Interface
XTAL
Host
Processor
(Optional)
SPI or Z2C Serial Interface
ZR38650
Decoded Audio
Outputs
DAC
DAC
DAC
DAC
(Optional)
Left
Right
Left Surround
Right Surround
Center
Subwoofer
Left Center
Right Center
General Purpose Control I/O
Figure 1. A Typical Low-Parts-Count ZR38650 System
ZORAN Corporation s 3112 Scott Blvd. s Santa Clara, CA 95054 s +1 (408) 919-4111 s FAX +1 (408) 919-4122 s www.zoran.com
15 February 1999

1 Page





ZR38650 pdf, ピン配列
ZR38650
SRS TruSurround. They work with either two- or six-channel
inputs and the AC-3 or MPEG decoders.
Six-Channel
AC-3 Stream
Six-Channel
AC-3 Decoder
Left
Right
Two-Channel
AC-3/MPEG1/
MPEG2 Stream
Two-Channel
AC-3/MPEG1
Decoder
Pro Logic
Decoder
Left
Right
Bass Management
Selected low-frequencies can be redirected to different
speakers with Bass Management. Useful with all types of
decoding to compensate for the types of speakers used.
DVD - Linear PCM
Special provisions are included for data formats and synchroni-
zation for AC-3/MPEG decoding with 3-D audio and bass
management for Digital Video Disk (DVD) applications.
Hall Effects/Music Modes
Adds the natural acoustical effects of a performance environ-
ment to the original recording environment.
Home THX5.1
Theater THX for use in consumer home entertainment systems.
Karaoke Processing
Voice cancellation, pitch-shifting and echo and reverberation.
Custom Functions, Etc.
Product designers can always add custom functions and varia-
tions, often with very simple software additions.
Operation and Set-Up Functions
These control the simple start and stop operation of the
decoding functions and determine the initial hardware operation
and configuration.
System Functions
These functions control the real-time operation including inter-
face transactions, program loading and in-circuit testing.
System Configurations
The ZR38650 is highly self-contained and can work with few
external parts as shown in Figure 1. However it is very flexible in
accommodating the needs of larger, higher performance
systems. Figure 2 shows all of the possible options that are sup-
ported to make a complete system.
Hosts
The ZR38650 does not require a host microprocessor but if
there is one in the system it may be used to advantage. Either
the bit-serial SPI (Small Peripheral Interface) or Z2C interface,
or a byte-wide parallel interface may be used.
Data Input/Output
The encoded digital input data stream can use a bit-serial or
byte-parallel interface or S/PDIF receiver with the ZR38650
either a master or slave. Up to six-channels of analog signals
can be input in bit-serial ADC (Analog-to-Digital Converter)
formats in a master or slave mode.
Analog Input
Bit-Serial Input
S/PDIF Input
Encoded
Data Input
S/PDIF Input
Parallel Input
ADC
(Optional)
XTAL
Host
Processor
(Optional)
Z2C or SPI Serial Interface
DAC
S/PDIF
Optical
Interface
(Optional)
8
ZR38650
Parallel Interface
8 32
8
General
Purpose I/O
DAC
DAC
DAC
(Optional)
S/PDIF
Optical
Interface
(Optional)
Host
Processor
(Optional)
Program/Data
RAM or ROM
(Optional)
Byte-Wide
Program ROM
(Optional)
Figure 2. ZR38650 Composite System Block Diagram
Left
Right
Left Surround
Right Surround
Center
Subwoofer
Left Center
Right Center
Decoded
Audio
Outputs
Lt/Rt
3


3Pages


ZR38650 電子部品, 半導体
ZR38650
Software - Functions
Primary Decoding and Test Functions
AC-3
The major modes of operation of the Dolby Digital AC-3 decoder
function are summarized in Table 2. Choices are for input and
output ports and their formats including operation with audio/vid-
eo synchronization (AVS), constant or request driven PES
packetized inputs and the linear PCM of DVD.
AC-3 input decoding rates are up to 640 kbits per second. Full
selection can be made for speaker configuration, dynamic range
compression, downmixing, delays, filtering and error conceal-
ment strategy. The Karaoke downmixing is also supported
including with downloaded Karaoke coefficients.
PCM + Pro Logic
With two-channel PCM inputs, the choice of functions is four-
channel Pro Logic decoding or two-channel stereo mixing.
Selection can be made for speaker configuration, downmixing,
delays and surround filtering.
MPEG
The MPEG1 decoder function accepts either MPEG1 or MPEG2
input streams and produces either Pro Logic or two-channel
stereo outputs in DAC form. Selection can be made for speaker
configuration, dynamic range compression, downmixing, delays
and surround filtering.
Pink Noise
This is a six-channel pink (equal energy per constant proportion-
al bandwidth) pseudo-random noise generator test function. It is
for user testing of speaker balance in a listening space. The six
individual speakers can be enabled in any combination at a
single adjustable level, with or without a band-limiting filter.
SiliconSoftware™ Functions
3-D Audio
There are six third-party providers of 3-D audio using the
ZR38650. This function gives the effect of a three-dimensional
sound field with only two speakers. These certified functions are
Aureal A3D, Dolby Virtual Surround, Harman VMAx, QSound
QSurround™, Spatializer N-2-2™ and SRS TruSurround. They
work with either two- or six-channel inputs and the AC-3, MPEG
and Pro Logic decoders as shown in Table 3.
Bass Management
Depending upon the speakers used in a listening area, it can be
desirable to alter the distribution of the bass frequencies
between speakers. A choice of speaker configurations is
provided and of low-pass cut-off frequencies for 80, 100 or 120
Hertz in the simplest form. The full function allows the low-pass
and high-pass filter coefficients to be downloaded along with
individual speaker sound levels.
Bass management works with either two- or six-channel inputs
and the AC-3, MPEG and Pro Logic decoders. It does not work
with 3-D audio although some 3-D audio functions include
certain bass management features.
DVD - Linear PCM
In addition to the audio/video synchronization (AVS) and request
driven PES packetized input features of the standard decode
functions, this DVD function has 3-D audio capability and bass
management. It works with two-, six- or eight-channel PCM
inputs and the AC-3, MPEG and Pro Logic decoders.
Table 2: Primary Decoding and Test Function Options Summary
Primary
Decoding Or
Test Function
AC3
Data
Stream
6-Channel
AC-3
2-Channel
AC-3
PCM + Pro Logic 2-Channel
PCM
MPEG
MPEG1
MPEG2
PNG
-
Serial Port
A, S/PDIF,
Parallel
SA, S/P, P
Input
AVS
Yes
SA, S/P, P Yes
SA, S/P, P No
SA, S/P, P Yes
SA, S/P, P Yes
--
Output
MPEG2
DVD
PES
PES
Packetized Packetized
Function
Serial DAC
Ports
Yes Yes 6-Channel AC-3
B,C,D
2-Channel Pro Logic
encoded
B
Yes
Yes 4-Channel Pro Logic
B,C,D
2-Channel AC-3
B
No
No 4-Channel Pro Logic
B,C,D
2-Channel PCM Mixed
B
Yes
Yes 4-Channel Pro Logic
B,C,D
2-Channel MPEG1
B
Yes
Yes 4-Channel Pro Logic
B,C,D
2-Channel MPEG1
B
- - 6-Channel Pink Noise B,C,D
S/PDIF Port G
Input Stream
Input Stream
Input Stream
-
6

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部品番号部品説明メーカ
ZR38650

Programmable Digital Audio Processor

Zoran
Zoran

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