Usb Interface; Overview - Huawei MU709 Series Hardware Manual

HUAWEI MU709 Series HSPA+ Mini PCIe Module
Hardware Guide
Figure 3-7 shows the recommended circuits of the LED_WWAN# pin. According to
LED feature, you can adjust the LED brightness by adjusting the resistance of resistor
R.
Figure 3-7 Driving circuit

3.5 USB Interface

3.5.1 Overview

The MU709 module is compliant with USB 2.0 protocol. The USB interface is powered
directly from the VBAT supply. The USB input/output lines are compatible with the
USB 2.0 signal specifications. Figure 3-8 shows the circuit of the USB interface.
Table 3-5 Definition of the USB interface
Pin No. Pin Name Pad Type
36 USB_DM I/O
38 USB_DP I/O
According to USB protocol, for bus timing or electrical characteristics of MU709 USB
signal, please refer to the chapter 7.3.2 of
Description Parameter
USB signal D- -
USB signal D+ -
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
Issue 04 (2015-06-25)
Description of the Application Interfaces
Min.(V) Typ.(V)
- -
- -
Universal Serial Bus Specification 2.0.
Max.(V)
-
-
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