Huawei MU736 - USB Interface

HUAWEI MU736 HSPA+ M.2 Module
Hardware Guide
Description of the Application Interfaces
Issue 05 (2014-01-14)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
34
3.5 USB Interface
The MU736 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
DC Characteristics (V)
Min.
Typ.
Max.
7
USB_D+
I/O
USB data signal D+
-
-
-
9
USB_D-
I/O
USB data signal D-
-
-
-
Figure 3-23 Recommended circuit of USB interface
Figure 3-24 shows the timing sequence between 3.3 V and USB D+.
Figure 3-24 MU736 USB D+ and 3.3 V power on timing
3.3V
Power_On_Off
USB D+
Tpd