ATSAM3303 Datasheet | Atmel

Features - - - - - - - - - - Three 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 (530 Kbits) Warm Start Power-down 1 µA 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 (GM-Lite) - MP3 Decoding - Effect Processing (Reverb, Echo, Chorus, etc.) - Filtering, Sampling Rate Conversion - Typical Applications: Cellular Phones, MP3 Player, Musical Instruments, Consumer Electronic, Professional Audio Audio Processing ATSAM3303 GM-Lite Synthesizer/ Professional Effects DSP Description The ATSAM3303 is a member of the new ATSAM3000 family that uses the DSP array technology. The ATSAM3303 includes three 24-bit DSPs, a 24-bit Audio Router and a general-purpose 16-bit on-chip CISC microcontroller. Its high performance and flexibility allow implementation of professional-quality audio applications, such as MP3 decoding, Wavetable synthesis, effect processing and 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. 6091A- DRMSD- 07/04 DSP Array Block Diagram Figure 1. ATSAM3303 DSP Array Block Diagram DSP Array (3 P24 DSPs) Embedded RAM 16K x 24 External RAM ROM Flash 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/O Embedded ROM 1K x 16 BIOS and Debug External I/O Functional Description DSP Array The ATSAM3303 includes three 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 windowing. A P24 sends and receives audio samples through the Sync Bus. It can request external data such...