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ISO1050: TXD波形不正确，无法正常通信

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Prodigy 20 points
Part Number: ISO1050

我使用280049和ISO1050DUBR进行CAN通信测试。

在使用其他CAN芯片进行测试时可以正常通信，但使用ISO1050DUBR时无法正常通信。

使用ISO1050DUBR测试时的TXD引脚波形

测试电路原理图

CAN通信的软件设置使用其他CAN芯片验证过，可以正常通信。