ESS Technology, Inc.
SAM0393-031201
1
ESS Technology, Inc.
ES3986
Digital-Audio Processor
Product Brief
DESCRIPTION
The ES3986 digital-audio processor chip is ESS
Technology’s highly integrated, optimal-quality, and cost-
effective single-chip solution for the emerging digital-audio
market. Its target applications include internet audio
platforms, MP3 CD players in boom box and combination
systems, portable MP3 CD player, etc.
Based on the programmable multimedia processor (PMP)
architecture,
the
ES3986
integrates
software-
configurable 32-bit reduced instruction set computing
(RISC) processor and a 64-bit vector processor core. The
RISC CPU can be used in place of a microcontroller to
provide the functions of system management, user
interface, and peripheral control. The vector processor is
dedicated for audio-specific processing. In addition to
MPEG audio decoding, it will generate 3D sound effects,
and support karaoke features, such as key control and
echo. The chip also provides the voice-activated ADPCM
codec for voice recording and language learning through
MIC input.
The ES3986 supports a variety of CD servos directly to
provide the system solution of lower BOM cost and
manufacturing flexibility. With its low system power
consumption, the built-in antishock capabilities, and 16-
Mbit DRAM support, the ES3986 is very suitable for
portable audio applications.
Figure 1 shows a typical standalone system using a
MP3 player, where the MP3 stream from a CD-ROM is
passed to the ES3986, which parses the system layer
and decodes the audio layer. The decoded MPEG
audio and 3D sound enhancement is then passed to the
external audio DAC.
FEATURES
• Programmable multimedia processor (PMP)
architecture
• MPEG1/MPEG2 and MP3 audio decoder
• CD block decoder functions
• STC interpretation and audio phase-lock loop (PLL)
• 256/384 fs for audio system clock
• Programmable master clock for external audio DAC
• Independent bit clock for audio transmit and receive
• Power management
• 2.5V power supply with 5V-tolerant I/Os
• 3D sound and surround sound
• Karaoke function
• Vocal reverb: simulates a theater acoustic
environment
• 0.3W power dissipation
• 2-Mb DRAM support
• 100-pin plastic quad flat pack (PQFP) package digital-
audio processor
Figure 1 ES3986 VCD Processor System Block Diagram
ES3986
Digital-Audio
Processor
Panel
Interface
ROM
CD ROM
DRAM
1M x 16
Remote
Control/
Keypad
AUDIO
DAC
Audio
Headphones
Amplifier
Spanish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
