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DS90UB948-Q1: 948 initialization

Part Number: DS90UB948-Q1
Other Parts Discussed in Thread: ALP, USB2ANY

Hi expert,

Will the 948 fail to initialize if it is connected to USB tool and power on?
Because my customer feedback said that the prototype(Auto display) can be lit without the USB tool, but it will not light up after the connection to USB tool is powered on, that is, the initialization of 948 is unsuccessful.