Overview
A highly integrated SOC for MP3/WMA player, AU7842 integrates MCU, MP3/WMA decoder, USB Host controller, SD/MMC card controller, a 16-bit audio decoder and an IR decoder in a single chip. Compared with traditional flash-MP3 player, AU7842 offers a lower cost, lower power consumption, flexible and more powerful Host MP3/WMA player solution.

FEATUREs
● Low power 0.18um CMOS technology
● Power supply 1.8V/3.3V, power consumption 110mW
● 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 layer3 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
● Support in-system debug through external emulator
● In-system firmware upgrade through U-disk or SD/MMC