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VS1001K fiches techniques PDF

ETC - MPEG AUDIO CODEC

Numéro de référence VS1001K
Description MPEG AUDIO CODEC
Fabricant ETC 
Logo ETC 





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VS1001K fiche technique
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VS1001K
VS1001k - MPEG AUDIO CODEC
Features
MPEG audio layer 3 decoder (ISO11172-3)
Supports MPEG 1 & 2, and 2.5 extensions,
all their sample rates and bit rates, in mono
and stereo
Supports PCM input
Supports VBR (variable bitrate)
Can be used as a slave co-processor
Operates with single clock 12..13 MHz or
24..26 MHz
Extremely low-power operation
On-chip high-quality stereo DAC with no
phase error between channels
Internal Op-Amp in BGA-49 and LQFP-48
packages
Stereo earphone driver capable of driving a
30load.
Separate 2.5 .. 3.6V operating voltages for
analog and digital
4 KiB On-chip RAM for user code
Serial control and data interfaces
New functions may be added with software
Description
VS1001k is a single-chip solution for an MPEG
layer 3 audio decoder. The chip contains a high-
performance low-power DSP processor (VS DSP),
working memory, 4 KiB program RAM and 0.5
KiB data RAM for user applications, serial con-
trol and input data interfaces, and a high-quality
oversampling variable-sample-rate stereo DAC, fol-
lowed by an earphone amplifier and a ground buffer.
VS1001k receives its input bitstream through a
serial input bus, which it listens to as a system
slave. The input stream is decoded and passed
through a analog/digital hybrid volume control to
an 18-bit oversampling multi-bit sigma-delta DAC.
The decoding is controlled via a serial control bus.
In addition to the basic decoding, it is possible to
add application specific features, like DSP effects,
to the user RAM memory.
DREQ
DCLK
SDATA
BSYNC
SO
SI
SCLK
XCS
VS1001
serial
data
interface
serial
control
interface
stereo
DAC
stereo ear−
phone driver
audio
L
R
output
SDI
Bus X Bus
VS_DSP
SCI
Bus Y Bus
I Bus
x−ROM
x−RAM
y−RAM
y−ROM
program program
RAM
ROM
Version 4.11, 2003-09-18
1

PagesPages 39
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