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TUSB4041I 偶尔正常工作,偶尔设备未识别

Other Parts Discussed in Thread: TUSB4041I

使用TUSB4041i 做的一个usbhub ,没有使用eeprom,有时候插上电脑能识别,可以正常使用,有时候插上电脑又显示设备无法识别,还有偶尔出现插上电脑没有任何反应,求指导,4041i部分电路如下: