VS1002D Datasheet, PDF (1/54 Pages) List of Unclassifed Manufacturers – MP3 AUDIO CODEC

VS1002d
VS1002D
VS1002d - MP3 AUDIO CODEC
Features
Description
• Decodes MPEG 1.0 & 2.0 audio layer III (CBR
+ VBR); WAV and PCM files
• Encodes ADPCM from microphone input
• Streaming support for MP3 and WAV
• Bass control
• Operates with single a clock 12..13 MHz or
24..26 MHz.
• Internal clock doubler
• Low-power operation
• High-quality on-chip stereo DAC with no
phase error between channels
• Stereo earphone driver capable of driving a
30Ω load
• Separate 2.5 V..3.6 V operating voltages for
analog and digital
• 7.5 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
• Lead-free RoHS-compliant packages
VS1002d is a single-chip MP3 audio decoder. It
contains a high-performance, low-power DSP pro-
cessor core VS DSP⁴, working data memory, 5
KiB instruction RAM and 2.5 KiB data RAM for
user applications, serial control and input data in-
terfaces, 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.
VS1002d 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 digital volume control to an 18-bit over-
sampling, multi-bit, sigma-delta DAC. The decod-
ing is controlled via a serial control bus. In addi-
tion to the basic decoding, it is possible to add
application specific features, like DSP effects, to
the user RAM memory.
VS1002
audio
MIC AMP
GPIO
4
GPIO
DREQ
SO
SI
SCLK
XCS
XDCS
RX
TX
Serial
Data/
Control
Interface
UART
Mono
ADC
Stereo
DAC
VSDSP⁴
Stereo Ear−
phone Driver
X ROM
audio
L
R
output
X RAM
Y ROM
Y RAM
Instruction
RAM
Instruction
ROM
Version 1.0, 2005-04-27
1