Usb Interface - Huawei MU609 Hardware Manual

HUAWEI MU609 HSPA Mini PCIe Module
Hardware Guide
No.
2
3
External Circuits
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

The MU609 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.
36
38
According to USB protocol, for bus timing or electrical characteristics of MU609 USB
signal, please refer to the chapter 7.3.2 of
Issue 03 (2014-12-04)
Operating Status
Register to the network
Dial-up successfully
Pin Name
USB_DM
USB_DP
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Copyright © Huawei Technologies Co., Ltd.
Description of the Application Interfaces
LED_WWAN#
Outputs: low (0.1s)-high (1.9s)
2s cycle
Outputs: low
Pad Type
I/O
I/O
Universal Serial Bus Specification 1.2.
Description
USB signal D-
USB signal D+
22