ATSAM3308 Datasheet | Atmel

Features - - - - - - - - - - Eight DSPs and 24-bit Audio Router On-chip 32 k Hz to 96 k Hz Sampling Rate 16-bit Microcontroller On-chip Variety of I/Os, including Smart Media™ and Data Flash® Embedded RAM for Single Chip Operation (768 Kbits) Warm Start Power-down 1µA Typical Deep Power-down, 0.5 m W/MIPS Typical Operating External Flash/ROM Capability Available in a 100-lead TQFP Package Ideal for Real-time Audio Applications - Wavetable Synthesis - MP3 Decoding - Effect Processing (Reverb, Echo, Chorus, Equalizer) - Filtering, Sampling Rate Conversion - Typical Applications: Karaoke, Professional Audio, Cellular Phones, Musical Instruments, Consumer Electronics Audio Processing ATSAM3308 bined MIDI-Synthesizer and MP3 Decoder Description The ATSAM3308 is a member of the new ATSAM3000 family that uses the DSP array technology. The ATSAM3308 includes eight 24-bit DSPs, a 24-bit Audio Router and a general-purpose 16-bit on-chip CISC microcontroller. Its high performance and flexibility with 8-input/8-output channels enables implementation of audio applications in professional-quality sound production such as MP3 decoding with time stretch and pitch control, concurrent Wavetable synthesis, effect processing and digital mixing. A variety of I/Os, including external Wave ROM, Smart Media® and Data Flash® are provided. Sampling rates up to 96 k Hz at 24 bits are supported. 6090A- DRMSD- 08/04 DSP Array Block Diagram Figure 1. ATSAM3308 DSP Array Block Diagram DSP Array (8 P24 DSPs) External RAM ROM Flash Embedded RAM 16k x 24 Sync Bus Async Bus 16 bit Processor (P16) I/Os, Timers, UARTs, Data Flash, Ports Router Final ACC MIX Audio OUT Audio IN Audio I/0 Embedded ROM 1k x 16 BIOS and Debug External I/O Functional Description DSP Array The ATSAM3308 includes eight on-chip DSPs. Each DSP (P24) is built around a 2k x 24 RAM and a 1k x 24 ROM. The RAM contains both data and P24 instructions, the ROM contains typical coefficients such as FFT cosines and...