Features
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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
20-bit Stereo Audio DAC
– 93 dB SNR playback stereo channel
– 32 Ohm/ 20 mW stereo headset drivers
– Stereo Line Level Input, Differential Mono Auxiliary Input
Programmable Audio Output for Interfacing with External Audio System
– PCM Format Compatible
– I
2
S Format Compatible
Mono Audio Power Amplifier
– 440mW on 8 Ohms Load
8-bit MCU C51 Core Based (F
MAX
= 20 MHz)
2304 Bytes of Internal RAM
64K Bytes of Code Memory
– AT89C51SND2C: Flash (100K Erase/Write Cycles)
– AT83SND2C: ROM
4K Bytes of Boot Flash Memory (AT89C51SND2C)
– ISP: Download from USB (standard) or UART (option)
USB Rev 1.1 Controller
– Full Speed Data Transmission
Built-in PLL
– MP3 Audio Clocks
– USB Clock
MultiMedia Card
®
Interface Compatibility
Atmel DataFlash
®
SPI Interface Compatibility
IDE/ATAPI Interface
Up to 32 Bits of General-purpose I/Os
– 1 Interrupt Keyboard
– SmartMedia
®
Software Interface
2 Standard 16-bit Timers/Counters
Hardware Watchdog Timer
Standard Full Duplex UART with Baud Rate Generator
Two Wire Master and Slave Modes Controller
SPI Master and Slave Modes Controller
Power Management
– Power-on Reset
– Software Programmable MCU Clock
– Idle Mode, Power-down Mode
Operating Conditions:
– 3V,
±10%,
25 mA Typical Operating at 25°C
– Temperature Range: -40°C to +85°C
– Power amplifier supply 3.2V to 5.5V
Packages
– CTBGA100
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Single-Chip
Flash
Microcontroller
with MP3
Decoder with
Full Audio
Interface
AT83SND2C
AT89C51SND2C
Preliminary
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Rev. 4341D–MP3–04/05
ATMEL [ ATMEL CORPORATION ]
