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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1567694/tusb8020b-does-not-attach-upstream-port-to-pc
工具/软件：
我们借助 TUSB8020B、不带 EEPROM 和 SMBus 接口构建了自己的 PCB。 与 EVAL-Board 不同、我们的解决方案在通过 SMB 设置 cfgActive 标志之前、不会将上游端口连接到 PC。 如何配置评估板中的 TUSB8020B、以便在上电后立即连接？
