ATJ2085 ETC, ATJ2085 Datasheet - Page 5

• Manufacturer Part Number: ATJ2085
• Description: Atj2085 is a Single-chip for Flash-based Digital Music Player
• Manufacturer: ETC

ATJ2085
1. Description
2. Features
Copyright © 2004 Actions Semiconductor Co., Ltd. All rights reserved.
MPEG1/2/2.5 Audio Layer 1, 2, 3 decoder
Support WMA Decoder
Digital Voice Recording with Actions Speech Algorithm
24 bits DSP Core with memory and on-chip Debug Support Unit (DSU)
Integrated 8-bit MCU with DSU
External up to 2(cs) x 64M/128M/256M/512M/1G/2G bytes Nand type Flash accessed by MCU or
DMA
Built-in DMA, CTC (Counter/Timer Controller) and interrupt controller for MCU
Energy saving dynamic power management (PMU)
Support USB 2.0（FS）, Write speed(Max): 955k byte/s; Read speed(Max): 1033k byte/s
Build in Stereo 18-bit Sigma-Delta DAC
Build in Key Scan Circuit (3*3) and GPIO
I²C interface supports Master/Slave mode, with changeable slave address
Support external 8080 Interface LCM driver
Support FM Radio input and 32 levels volume control
Support Stereo 16-bit Sigma-Delta ADC for Microphone/FM Input, sample rate at
VER 1.5
ATJ2085 is a single-chip for flash-based digital music player. It includes an audio decoder with a
high performance DSP, ADPCM record capabilities and USB interface for downloading music and
uploading voice recordings. ATJ2085 also provides an interface to flash memory, LED, button and
switch inputs, headphone, and microphone, and FM radio input and control. ATJ2085’s
programmable architecture supports the MP3, WMA and other digital audio standards. For
devices like USB-Disk, ATJ2085 can act as a USB mass storage slave device to personal
computer system. Its low power consumption allows a long battery life, and an efficient flexible
on-chip DC-DC converter allows many different battery configurations, including 1xAA, 1xAAA,
2xAA, 2xAAA and Li-Ion. Built-in Sigma-Delta DAC & a headphone driver to directly drive low
impedance headphones. The ADC includes inputs for both Microphone and Analog Audio in to
support voice recording and FM radio integration features. Thus, the ATJ2085 provides a true
‘ALL-IN-ONE’ solution that is ideally suited for highly optimized digital audio players with mass
storage function.
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Page 4
DATA SHEET
8/18/2004
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