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TMS320F28032内部晶振补偿补偿导致SCI通讯故障

DSP在高温下测试CAN通讯有问题(验证晶圆厂G4没有问题,C有问题),采用的是内部晶振1,考虑DSP 内部晶振温度补偿,补偿之后CAN通讯确实可以了,但是SCI通讯有出问题了,怎么个怎么解决