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C6670 EVM 原理图中Y4与W4管脚



在TMS320C6670 EVM3.0的原理图中的第16页里面,在Smart Reflex那一块,DSP的Y4和W4管脚分别是VCL和VD的功能,但是我查看C6670 data manul里面Y4和W4管脚的功能是Reserved,建议保持开路,不知道这是什么个情况?