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參數(shù)資料
| 型號： | ST18-AU1 |
| 廠商： | 意法半導體 |
| 英文描述： | Six-Channel Dolby AC3/MPEG2 Audio Decoder(六通道多功能音頻解碼器) |
| 中文描述： | 六聲道音頻解碼器杜比AC3/MPEG2（六通道多功能音頻解碼器） |
| 文件頁數(shù)： | 1/87頁 |
| 文件大?。?/td> | 501K |
| 代理商： | ST18-AU1 |
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February 98
42 1726 00
This is preliminary information on aproduct indevelopment orundergoing evaluation. Detailsare subject tochange without notice.
ST18-AU1
SIX-CHANNEL DOLBY AC3/MPEG2 AUDIO DECODER
PRELIMINARY DATA
FEATURES
I
Single chip multi-function audio decoder able to
decompress
DOLBY
MPEG-2 audio streams.
AC-3,
MPEG-1
and
I
Maximum 5.1 channel DOLBY AC-3 decoding
to 2 channel mixed down output with DOLBY
surround compatible orkaraoke capable option.
bit rate MPEG-1
decoding, and MPEG-2 multi-channel audio
decoding for karaoke capable application.
I
Variable
layer II
audio
I
Input data rates
up to 448 Kbits/s for AC-3 decoder
up to 912 Kbits/s for MPEG-1 or MPEG-2
audio decoder
I
I
I
Supports up to 8 channel DVD linear PCMinput
at max rate of 6.144 Mbits/s down-mixing and/
or sub-sampling to 2 to 6 channels.
I
Accepts MPEG-1 or DVD/MPEG-2 PES input
packets.
I
Programmable D950 core
I
System
synchronization and PTS packet extraction.
error concealment on
synchronization error.
time
clock
provides
A/V
I
Automatic
CRC or
I
6 channel PCM audio output at 16/18/20/24 bit.
Sampling rate of 32/44.1/48/96 kHz.
I
Two on-chip PLLs providingfullcircuit operation
with only one external 27 MHz clock.
I
I
2
C interface for host control
I
Multi-format i
2
S serial data input port and
decoded audio PCM output port.
I
IEC-958 (S/PDIF) formatter and transmitter for
DOLBY AC-3, MPEG audio bit stream, oraudio
PCM.
I
Dedicated hardware for emulation and test,
IEEE 1149.1 (JTAG).
3.3V power supply, I/O’s 5V tolerant, 0.35
μ
M
HCMOS6 technology.
I
160 pin PQFP package
APPLICATIONS
I
Digital video disc (DVD) player
I
Digital TV (DBS/DVB) receiver
I
PC multimedia
I
Consumer digital audio
Interrupt
controller
Clocks and
timers
I
2
C Host
interface
2
Input serial
interface
IEC-958
(S/PDIF)
output
16K Program
memory
3
Output serial
interface
D950
DSP
core
24K Data
memory
DMA
controller
Emulation
unit and TAP
Bus switch
unit
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