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FPD-LINK III 问题



TI工程师好:

最近我在使用DS90UB913A/ DS90UB914A串并转换芯片,电路做好后,我在914这一边控制GPIO高低变化,913那边可以同步变化,说明硬件OK,但是发现913输出低电平VOL是0.8V,有些偏高,请问这是什么情况? 我VDDIO是1.8V, 谢谢!