描述 Description

The T8xC51SND1 product is a fully integrated stand-alone hardwired MPEGI/II-Layer 3 decoder with a C51 microcontroller core handling data flow and MP3-player control.

The T89C51SND1 includes 64 Kbytes of FLASH memory and allows In System Programming through an embedded 4 Kbytes of Boot FLASH Memory.

The T83C51SND1 includes 64 Kbytes of ROM memory.

The T8xC51SND1 includes 2304 bytes of RAM memory.

The T8xC51SND1 provides all necessary features for man machine interface like timers, keyboard port, serial or parallel interface (USB, 2-wire, SPI, IDE), ADC input, I2S output, and all external memory interface (NAND or NOR FLASH, SmartMedia, MultiMedia).

特性 Features

? MPEGI/II-Layer 3 Hardwired Decoder

– Stand-alone MP3 decoder

– 48, 44.1, 32, 24, 22.05, 16 KHz sampling freq.

– 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 available on the market

– PCM format compatible

– I2S format compatible

? 8-bit MCU C51 core based (FMAX= 20 MHz)

? 2304 bytes of Internal RAM

? 64 Kbytes of Code Memory

– FLASH: T89C51SND1, ROM: T83C51SND1

? 4 Kbytes of Boot Flash Memory (T89C51SND1)

– 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

– USB clock

? MultiMediaCard? Interface Compatibility

? Atmel DataFlash? SPI Interface Compatibility

? IDE/ATAPI Interface

? 2 Channels 10-bit ADC, 8KHz (8 true bit)

– Battery voltage Monitoring

– Voice recording controlled by software

? Up to 44 bits of General Purpose I/Os for:

– 4-bit interrupt keyboard port for a 4 x n matrix

– Smartmedia? software interface

? Standard Two 16-bit Timers/Counters

? Hardware Watchdog Timer

? Standard Full Duplex UART with Baud Rate Generator

? 2-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

– -40°C to +85°C

? Packages

– TQFP80, PLCC84 (development board)

– Dice

Typical Applications

? MP3-Player

? PDA, Camera, Mobile Phone MP3

? Car Audio/Multimedia MP3

? Home Audio/Multimedia MP3