SIM8200-M22USB User Guidelines V1.00

SIM8200-M22 USB User Guidelines V1.00
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3.3 USB Interface
SIM8200-M22USB board support USB3.1 interface, which backward compatible with USB2.0 interface.
The USB interface is used for AT command communication, data transmission, GNSS NMEA output,
firmware update and software debugging.
The following figure shows the pin assignment of USB interface.
Figure 5: Pin assignment of USB interface (U101)
Table 4: Pin assignment of USB interface
Pin no.
Pin name
I/O
description
1
VBUS
O
USB 5V power supply
2
D-
I/O
Differential USB bi-directional data negative
3
D+
I/O
Differential USB bi-directional data positive
4
GND
Power Ground
5
SSRX-
I
USB3.1 receive data negative
6
SSRX+
I
USB3.1 receive data positive
7
GND_DRAIN
Signal Ground
8
SSTX-
O
USB3.1 transmit data negative
9
SSTX+
O
USB3.1 transmit data positive