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TUSB321 问题请教 ---急!

Other Parts Discussed in Thread: TUSB321

最近在评估TYPE-C TUS321 ,

对于TI的TUSB321的9个比较器电压门限值有些疑问,如下:

TUSB321做UFP用途且DFP为USB_Power模式时(如图1),计算得到CC检测电压为0.42V。而TI规格书USB_POWER的UFP的CC电压检测值为0.2V(如图2)。另图3为TYPE C协议规定的CC检测电压,在UFP_USB_Power模式下,协议规定CC检测电压为0.25(min)~0.61V(max),与TI规格书上CC检测电压不一致,以此类推,TI芯片CC检测电压与协议值计算都有误差。图片如下: