[Actions Semiconductor Co., Ltd]

Description

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.

Features

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 8/12/16/22/24/32/48KHz

MCU run at 24.576MHz(TYP), up to 60MHz

SNR: 90dB (DAC TYP)

Headphone driver output 2x11mW @16 Ohm(TYP)

Operating Voltage: IO: 3.0V(TYP), Core: 2.0V(TYP)

Standby Leakage Current: VCC: 35uA@3.0V(TYP) , VDD: 110uA@2.0V(TYP)

Low Power Consumption, designed for greater than 15 (TYP) hours of operation on a single battery life. (<65mW at typical MP3 decoder solution; <90mW at typical WMA decoder solution)

64-pin (10x10mm) LQFP package