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iMX6UL无法识别USB

Question asked by hong yan on Oct 16, 2017
Latest reply on Oct 16, 2017 by hong yan

iMX6G2D  OTG1无法识别USB

MODE1=0   OK

MODE0=1   OK

USB-OTG1=3.3V   OK

USB_OTG1_VBUS=5V  OK

UART1_RX上拉10K  OK

32.768KHZ ,24MHZ  OK

VDD_SNVS_IN=3V  OK

VDD_HIGH_IN=3.3V OK

VDD_SOC_IN=1.35V OK

USB_OTG1_DP=2.8V  NG 正常是0V

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