VS1001K Datasheet, PDF (1/40 Pages) List of Unclassifed Manufacturers – MPEG AUDIO CODEC

DATASHEET
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
• 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
30Ω load.
• 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 4.14, 2004-02-10
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