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DSP芯片选型



我是DSP新手,现在不知道选择哪一个型号的DSP芯片,我们要做高性能的滤波处理,需要512阶。能否推荐一款能够做到512阶滤波处理的DSP芯片?

还有就是之前问过为什么F2812只能做255阶,回答是因为循环寻址模式的最大缓存大小是256。请问循环寻址模式的最大缓存大小是由什么决定的?