Overview
A highly integrated SOC for MP3/WMA player, AU7840 integrates MCU,MP3/WMA decoder, USB Host controller, SD/MMC card controller, a 16-bit audiodecoder, ADC and an IR decoder in a single chip. Compared with traditional flash-MP3player, AU7840 offers a lower cost, lower power consumption, flexible and morepowerful host MP3/WMA player solution.

Features
Low power 0.18um CMOS technology
Power supply 1.8V/3.3V, power consumption 125mW, support sleep mode
Enhanced 8051, up to 10 times faster than standard 8051
USB2.0 full-speed host controller
SD/MMC card controller
Support MPEG 1/2/2.5 layer2/3 decoding, data rate 32kbps ~ 320kbps,
including VBR
Support WMA format, data rate 32kbps ~ 384kbps
Support 9 sampling frequency:
8kHz/11.025kHz/12kHz/16kHz/22.05kHz/24kHz/32kHz/44.1kHz/48kHz
Embedded sound equalizer
Support tag format ID3v1 and ID3v2.4
Support FAT16/FAT32 file system
Embedded 16-bit sigma-delta audio DAC
Embedded headphone amplifier
Support IR Remote control
GPIO for various purposes
1 channel 10-bit SAR ADC for peripheral controls
1 channel AUX in
Embedded 64KB OTP memory for program code storage


System Application
MP3/WMA audio system

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