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焊上dsp6678后,CVDD1输出1V,CVDD无输出



焊DSP之前,已经将电源调通了,CVDD和CVDD1都有输出的,但现在DSP焊上后,CVDD没有输出了,这里我FPGA里没有对DSP_VCL和DSP_EN两个引脚进行操作,会不会是这样,导致了动态调节电压就不起作用了?