SHARC and the SHARC logo are registered trademarks of Analog Devices, Inc. The ADSP-21483/ADSP-21486/ADSP-21487/ADSP-21488/ADSP-21489 Rev. A is a high-performance 32-bit/40-bit floating-point processor optimized for high-performance audio processing. It features a single-instruction, multiple-data (SIMD) computational architecture, 5 Mbits on-chip RAM, 4 Mbits on-chip ROM, and up to 400 MHz operating frequency. It is code compatible with all other members of the SHARC family.
The ADSP-2148x processors are members of the SIMD SHARC family featuring Analog Devices' Super Harvard Architecture. They are source code compatible with previous SHARC processor families and include unique audio-centric peripherals such as a digital applications interface, serial ports, precision clock generators, S/PDIF transceiver, and asynchronous sample rate converters.
The architecture utilizes two computational processing elements (PEX and PEY) that operate as a single-instruction, multiple-data (SIMD) engine. Each element contains an ALU, multiplier, shifter, and data register file, allowing the processor to perform up to 2.4 GFLOPS at 400 MHz.
| Maximum Instruction Rate | 400 MHz |
|---|---|
| On-chip RAM (ADSP-21486/ADSP-21489) | 5 Mbits |
| On-chip ROM (ADSP-21486/ADSP-21489) | No |
| FFT Accelerator Performance (1024 Point Complex FFT) | 23 us |
| Maximum Floating-Point Performance | 2.4 GFLOPS |
The processors can operate at a frequency of up to 400 MHz.
The processors include 5 Mbits of on-chip RAM and 4 Mbits of on-chip ROM.
The FIR filter achieves a performance of 1.25 ns per tap.