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부품번호 ZR38601 기능
기능 PROGRAMMABLE DIGITAL AUDIO PROCESSOR
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ZR38601 데이터시트, 핀배열, 회로
DATA SHEET
ZR38601
PROGRAMMABLE DIGITAL AUDIO PROCESSOR
FEATURES
s Standard High Performance 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
- 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
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
- 100-pin Plastic Quad Flat Pack (PQFP) packaging
- 3.3 V supply with 5 V compatible I/O for low power
s 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
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.
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
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.
Encoded Data
Input
S/PDIF Input
S/PDIF
Optical
Interface
XTAL
Host
Processor
(Optional)
SPI or Z2C Serial Interface
ZR38601
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 ZR38601 System




ZR38601 pdf, 반도체, 판매, 대치품
ZR38601
Decoded audio outputs can be up to eight channels in bit-serial
DAC formats or six encoded channels from the S/PDIF
transmitter.
Memory
External memory is not normally needed but can be added for
program and/or digital audio data. Additional program storage
gives different or additional functions when a host is not used
and allows a choice of ROM technologies to be employed for
future upgradability. External data memory may be required for
functions with long acoustical delays, input buffering or large
data tables. Program memory interfaces are byte-wide to
provide minimum cost and parts count.
FUNCTIONAL DESCRIPTION
A more complete description of the ZR38601 software’s opera-
tion and configurations and its hardware configurations follows.
Software - Operation
One of the major benefits of the ZR38601 is its ease of use for
the system developer under a broad range of system require-
ments. Standard functions are easy to use, yet custom features
can be added without falling back to custom software develop-
ment with complicated real-time operating system
considerations or detailed I/O protocols. This follows from the
fact that all software functions are supplied with a common
command and response sequence for use with a host or an API
(Application Programming Interface) for calling from an internal
program. And each provides for adding custom functions in not
just one but a series of ways which depend upon the complexity
of the custom function.
This is shown schematically in Figure 3 where the operation,
set-up, primary, and SiliconSoftware functions are shown in the
middle. Using the system utilities to maintain the communica-
tions with the host, the host can issue a sequence of commands
with responses to control the ZR38601’s operation. The utilities
issue API calls to the functions. All of the software development
can be limited to the host microprocessor even when feature
types of variations in operation are based on getting information
back from the ZR38601’s operation.
Alternatively, the control information in the commands can be
entered in a sequence of API calls issued from a custom
program running internally on the ZR38601 processor. Now no
host is required.
With either a host command/response stream or API calls,
custom functions in native ZR38001 code can be added without
losing the benefits of the ease of use in the common structure.
Table 1 is a summary of the commands and responses for the
standard primary, operation and set-up functions. Note there are
read and write commands to the ZR38601 and responses back
from the ZR38601 to the host. Responses are due to commands
during normal operations that are in progress or from certain
specific commands with read commands following.
ZR38601 Resident Control Program
Custom ZR38601
Control Program
Set-up A
Operate A
Set-up B
Operate B, Etc.
APIs
Operation and
Set-Up Functions
PLAY Operation
STOP Operation
SETIO Set-up
CFG Set-up, Etc.
Primary Decoding,
Test and
SiliconSoftware
Functions
Function A
Function B
Function C, Etc.
System Functions
Monitor
Host Resident Control Program
Host Processor
With Control
Program
Command Stream
Set-up A
Response Stream
Response A
APIs
System Functions
Utilities
Figure 3. ZR38601 Operation Control: Commands from a Host or Calls from a ZR38601 Resident Program

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ZR38601 전자부품, 판매, 대치품
ZR38601
Hall Effects/Music Modes
Short and long term delays and reverberation are added to mul-
tichannel PCM inputs with this function. Delay coefficients are
downloaded to simulate various acoustical environments
(concert halls, churches, stadiums, etc.)
Home THX5.1
This function, when used in a two-chip set connected in
cascade, provides the sound of the Lucasfilm theater THX in the
home listening environment. The input chips runs all of the
standard decoding functions and passes its PCM outputs to the
second chip for the THX5.1 processing which included full bass
management, decorrelation, timbre matching and re-equaliza-
tion and individually programmable channel delays.
Karaoke Processing
In addition to the Karaoke input mixing features of the standard
decode functions, this is true Karaoke processing with voice
cancellation, pitch shifting, voice echo and reverberation and
bass management. External data memory may be required for
this function.
Custom Functions, Etc.
The User function allows developers to easily add custom func-
tions using their own native ZR38001 code, yet retain the ease
of control of the command and response structure of the
ZR38601.
Operation and Set-Up Functions
The operation functions, summarized in Table 1, are the real-
time start and stop commands needed for system control once
the primary decoding function has been selected. Also included
are commands to get the input channel and decoding status to
monitor on-going operation. The PTC and STC time clocks can
also be monitored to insure audio and video synchronization.
The set-up functions configure both the hardware and software
before operation starts or as major operational changes are
made. Hardware configuration and initialization includes the
phase-locked loops (PLLs), system clocks and the input/output
(I/O). Software can be put in place through the host processor
from its I/O or memory system. It may be in the form of custom
commands and their parameters or directly executable native
code for the core DSP processor.
Table 3: SiliconSoftware Function Options Summary
SiliconSoftware Function
3-D Audio: Aureal A3D
Dolby Virtual Surround
Harman VMAx
QSound QSurround™
Spatializer N-2-2™
SRS TruSurround
Bass Management
DVD
Serial Port A,
E or F, S/PDIF,
Parallel
SA, S/P, P
SA, S/P, P
SA, P
Input
Standard Function
Source
AC-3, AC-3 + Pro Logic,
PCM + Pro Logic, MPEG,
MPEG + Pro Logic
All of the above
All of the above + 8-
Channel PCM
Output
Function
2-Channel 3-D Audio
Serial DAC
Ports
B
Redirect low frequencies
to different speakers
Decoding, 3-D and bass
management
B, C, D
B, C, D, G
Hall Effects/Music Modes
Home
THX5.1
Decoding Chip
THX Processing Chip
Karaoke Processing
SA, S/P, P
SA, S/P, P
SA, SE, SF
S/P & SF or SA
& SF
PCM
AC-3, AC-3+Pro Logic,
PCM+Pro Logic, MPEG,
MPEG + Pro Logic
AC-3, PCM, MPEG
Add room effects
Two chip set decodes and
produces THX outputs
Voice cancellation, pitch
shifting, echo and rever-
beration and bass
management.
B, C, D
B, C, D
B, C, D
B, C, D
S/PDIF Port G
Input Stream
Input Stream
Input Stream
Unless 8-Ch.
PCM
Input Stream
Input Stream
-
Input Stream

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