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Can I use CAN and USB pin only if USB plugged in?
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如图所示： 为了满足USB 数据线信号完整性要求，电阻R1/R2/R3/R4 必须靠近模组放置，且电阻之间需要靠近放置。连接测试点支路必须尽量短。在USB 接口电路设计中，为了确保USB 性能，在电路设计中建议遵循以下原则： 1、 为降低USB 高速数据传输时 ...
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