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參數(shù)資料
| 型號(hào)： | VS1003 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | Codec |
| 英文描述： | MP3 / WMA AUDIO CODEC |
| 中文描述： | MP3播放/ WMA音頻編解碼器 |
| 文件頁(yè)數(shù)： | 1/57頁(yè) |
| 文件大?。?/td> | 456K |
| 代理商： | VS1003 |
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VS1003 PRELIMINARY
VS1003
VS1003 - MP3/WMA AUDIO CODEC
Features
Decodes MPEG 1 & 2 audio layer III (CBR
+VBR +ABR); WMA 4.0/4.1/7/8/9 all pro-
files (5-384kbps); WAV (PCM + IMA AD-
PCM);
General MIDI / SP-MIDI files
Encodes IMA ADPCM from microphone
or line input
Streaming support for MP3 and WAV
Bass and treble controls
Operates with a single clock 12..13 MHz.
Internal PLL clock multiplier
Low-power operation
High-quality on-chip stereo DAC with no
phase error between channels
Stereo earphone driver capable of driving a
30
load
Separate operating voltages for analog, dig-
ital and I/O
5.5 KiB On-chip RAM for user code / data
Serial control and data interfaces
Can be used as a slave co-processor
SPI flash boot for special applications
UART for debugging purposes
New functions may be added with software
and 4 GPIO pins
Instruction
RAM
Instruction
ROM
Stereo
Mono
L
R
UART
Serial
Control
Stereo Ear
DREQ
SO
SI
SCLK
XCS
RX
TX
audio
output
X ROM
X RAM
Y ROM
Y RAM
4
GPIO
GPIO
VSDSP
4
XDCS
VS1003
Clock
MUX
line
audio
mic
audio
Description
VS1003 is a single-chip MP3/WMA/MIDI audio
decoder and ADPCM encoder. It contains a high-
performance, proprietary low-power DSP proces-
sor core VS DSP
4
, working data memory, 5 KiB
instruction RAM and 0.5 KiB data RAM for user
applications, serial control and input data inter-
faces, 4 general purpose I/O pins, an UART, as
well as a high-quality variable-sample-rate mono
ADC and stereo DAC, followed by an earphone
amplifier and a ground buffer.
VS1003 receives its input bitstream through a se-
rial input bus, which it listens to as a system slave.
The input stream is decoded and passed through a
digital volume control to an 18-bit oversampling,
multi-bit, sigma-delta DAC. The decoding is con-
trolled via a serial control bus. In addition to the
basic decoding, it is possible to add application
specificfeatures, likeDSPeffects, totheuserRAM
memory.
Version 0.92,
2005-06-07
1
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