Micro Usb Interface - Quectel SG368Z Series Hardware Design

USB0_VBUS
USB0_ID
USB0_DP
USB0_DM
USB0_SS_TX_P
USB0_SS_TX_M
USB0_SS_RX_P
USB0_SS_RX_M
USB1_DP
USB1_DM
USB1_SS_TX_P
USB1_SS_TX_M
USB1_SS_RX_P
USB1_SS_RX_M
USB2_DP
USB2_DM
USB3_DP
USB3_DM

4.1.1. Micro USB Interface

Only USB0_DP and USB0_DM are the system firmware burning interface. If you do not use this interface,
please be sure to reserve this interface and test points during the debugging and production process,
otherwise you will not be able to debug and produce burning firmware.
USB0_ID is internally pulled up to 1.8 V with an about 200 kΩ resistor.
USB0_VBUS is used to detect OTG mode and Device mode. It is active at high level. Its voltage range is
2.7–3.3 V, and the typical value is 3.0 V. It is recommended to place a 100 nF capacitor near
SG368Z_Series_Hardware_Design
111 DI USB0 insertion detection
118 DI USB0 ID detect
112 AIO USB0 2.0 differential data (+)
113 AIO USB0 2.0 differential data (-)
107 AO USB0 3.0 transmit (+)
108 AO USB0 3.0 transmit (-)
109 AI USB0 3.0 receive (+)
110 AI USB0 3.0 receive (-)
79 AIO USB1 2.0 differential data (+)
83 AIO USB1 2.0 differential data (-)
84 AO USB1 3.0 transmit (+)
88 AO USB1 3.0 transmit (-)
89 AI USB1 3.0 receive (+)
92 AI USB1 3.0 receive (-)
289 AIO USB2 2.0 differential data (+)
292 AIO USB2 2.0 differential data (-)
295 AIO USB3 2.0 differential data (+)
297 AIO USB3 2.0 differential data (-)
Smart Module Series
Can not supply power for
peripherals.
A test point must be
reserved.
Internally pull up to 1.8 V.
A test point must be
reserved.
A test point must be
reserved.
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