• MPEG I/II-Layer 3 Hardwired Decoder

– Stand-alone MP3 Decoder

– 48, 44.1, 32, 24, 22.05, 16 kHz Sampling Frequency

– Separated Digital Volume Control on Left and Right Channels (Software Control

Using 31 Steps)

– Bass, Medium, and Treble Control (31 Steps)

– Bass Boost Sound Effect

– Ancillary Data Extraction

– "CRC Error" and "MPEG Frame Synchronization" Indicators

• Programmable Audio Output for Interfacing With Common Audio DAC

– PCM Format Compatible

– I2S Format Compatible

• 8-bit MCU C51 Core Based (FMAX= 20 MHz)

• 2304 Bytes of Internal RAM

• 64K Bytes of Code Memory

– Flash: AT89C51SND1C, ROM: AT83C51SND1C

• 4K Bytes of Boot Flash Memory (AT89C51SND1C)

– ISP: Download from USB or UART to Any External Memory Cards

• USB Rev 1.1 Controller

– "Full Speed" Data Transmission

• Built-in PLL

– MP3 Audio Clocks

– USBClock

• MultiMedia Card¢â Interface Compatibility

• Atmel DataFlash