Huawei ME906s LTE M.2 - USB Interface

HUAWEI ME906s LTE M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 05 (2019-03-25)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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Figure 3-19 Logic of USIM_DET
3.5 USB Interface
The ME906s is compliant with USB 2.0 high speed protocol. The USB input/output
lines are following USB 2.0 specifications. Definition of the USB interface:
Pin No.
Pin Name
I/O
Description
7
USB_D+
I/O
USB data signal D+
9
USB_D-
I/O
USB data signal D-
Figure 3-20 Recommended circuit of USB interface
Figure 3-21 shows the timing sequence between 3.3V and USB D+.
Modem
Processor
USIM Connector Switch
USIM installed=
Not Connected
USIM not
installed=
GND
WWAN Module
USIM_DET
1.8V