Digital signal processor performance and evaluation criteria

Digital signal processor (DSP) performance can be divided into three grades: low-cost, low-performance DSPs, low energy consumption in the DSPs and diversification of high-end DSPs. Low-cost performance of low end DSPs is the industry's most widely used processor. In this context are: ADSP-21xx, TMS320C2xx, DSP560xx series, their running speed is 20 ~ 50MIPS, and in the maintenance of appropriate energy consumption and storage capacity at the same time, provide high-quality DSP performance. Affordable DSP processor, by increasing the clock frequency, combined with more complex hardware to improve performance, formed the DSPs's in products such as DSP16xx, TMS320C54x series, their operating speed to 100 ~ 150MIPS, are commonly used in wireless telecommunications equipment and high speed modem, requires relatively high processing speeds and lower power consumption. High-end DSPs since being super high-speed processing needs, its structure and really start to diversification, the structure of the next section. High-end DSPs's clock speed reached above, the processing speed 150MHz as 1000MIPS above, such as TI's TMS320C6X series, ADI SHARC for Tiger. Evaluation of performance indicators for many, the most common is the speed, power and memory capacity indicators is also very important, especially in the embedded system applications. In view of the increasing number of DSPs, system designers to be elected in a given application equipment to be able to provide the best performance of the processors become more difficult. In the past, the DSP system designers rely on MIPS or a similar measure, to probably understand different chip provides relative performance. Unfortunately, with the processor technology diversification, such as MIPS increasingly inaccurate traditional metrics because MIPS and not the actual measured performance. Because the DSP application is one of the characteristics of most of the processing work is concentrated in a part of your (core), and therefore can be used with signal processing related benchmarks to test assessment DSP processors. BDTI company has completed the set of core standards, and register a new mixed speed measurement: BDTI score.