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 processing speed, power, program memory and data memory capacity of chip resources, If the number timer, I/O export volume, the number of interruption, DMA channels, and so on. DSP major vendors are TI, ADI, Motorola, Lucent and wireless. TI which holds the largest market share