主要考虑处理速度、功耗、程序存储器和数据存储器的容量、片内的资源，如定时器的数量、

I/O 口数量、中断数量、DMA 通道数等。DSP 的主要供应商有TI，ADI，Motorola,Lucent

和Zilog 等，其中TI 占有最大的市场份额。-Major consideration speed, power, program memory and data storage capacity, on-chip resources, such as the number of timers, I/O port number, interrupt number, DMA channels and so on. DSP' s main suppliers TI, ADI, Motorola, Lucent, and Zilog, among which TI holds the largest market share.