WDISABLE# Signal, LEDWWAN# Signal, USB Interface | Huawei ME909

HUAWEI ME909 Series Mini PCIe Module
Hardware Guide	Description of the Application Interfaces

3.7 W_DISABLE# Signal

The W_DISABLE# signal is provided to allow users to disable wireless communications of the module.

The software version is planning.

3.8 LED_WWAN# Signal

ME909 provides a LED_WWAN# signal to indicate the RF status.

The ME909 module does not support this function because the software feature is under development. The planning drive strength is10 mA.

External Circuits

Figure‎ 3-7shows 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 3-7Driving circuit

3.9 USB Interface

The ME909 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 3-8shows the circuit of the USB interface.

		Huawei Proprietary and Confidential	18
	Issue 0.1 (2013-06-09)	Copyright © Huawei Technologies Co., Ltd.

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Huawei ME909 manual WDISABLE# Signal, LEDWWAN# Signal, USB Interface

Contents

Issue Date Hardware Guide No Warranty About This Document Revision HistoryDocument Date Chapter Descriptions Version Contents Certifications FCC Statement Introduction 1ME909 series product nameProduct name Description State About This Chapter Feature DescriptionOverall Description Function Overview Circuit Block Diagram LEDWWAN# Active-low LED signal indicating the state Description of the Application Interfaces Mini PCIe Interface COEX1 WAKE#VCC3V3 GND Uimpwr UimresetWDISABLE# Uimdata Usbd Usbdm SmbclkSmbdata USBD+ Usbdp Power Sources and Grounds Pin No Pin Name Minimum Typical Maximum Cutting off 3.3 V will power off the module Power Supply Time SequencePower Valid to USB + high Parameter Remarks Time Nominal value Unit WAKE# Signal Resinn Signal 6Reset pulse timing WDISABLE# Signal LEDWWAN# SignalUSB Interface Usim Card Interface Pin No Pin Name Description DC Characteristics Min Typ MaxPin Pin Name Description DC Characteristics Min Typ Max Overview Circuit Recommended for the Usim Card Interface External 2.85 Usim card PCM clock Pin Pin Name Description DC Characteristics Min TypAudio Interface PCM data input RF Antenna Connector Pin No Pin Name Description Reserved PinsNC Pins Reserved Reserved, please keep open NC pins RF Specifications Operating FrequenciesOperating Band Test Environment Conducted Rx Sensitivity and Tx PowerConducted RF Measurement Test Standards Band Typical TBDType Value Qpsk Conducted Transmit PowerModulation RB Allocation MPRdB 16QAM Antenna Design Indicators Antenna Design Requirements Polarization Interference 3 GSM/WCDMA/GPS Antenna Requirements Operator, the customer must use the most suitable Radio Test EnvironmentFrequency range Antenna for that/those bands Passive Tests External power voltage Digital input voltage Electrical and Reliability FeaturesSymbol Specification Min Max Unit Absolute Ratings Electrical Features of Application Interfaces Operating and Storage Temperatures and HumidityElectrical Features of Usim Specification Min Max Unit Power Module Peak GSM Normal Normal LTE Slot Power Supply FeaturesInput Power Supply Parameter Min Typ Max Ripple Unit Power Consumption Description Bands Test Value Units Description Band Test Value Units Power dBm WcdmaHsdpa 23dBm Tx Power IMT2100LTE GPRS850 TBD ConfigurationDescription Test Value Units GPRS900 TBD Description Max Test Value Units Configuration EDGE850 TBDEDGE900 TBD Reliability Features Test Condition Standard EMC and ESD Features − UIM − USB Huawei Proprietary and Confidential Issue 0.1 Mechanical Specifications Dimensions and Interfaces Dimensions of the Mini PCI Express Connector 1Dimensions of the ME909 module Specification Selection for Fasteners Installing the Mini PCIe Adapter on the Main Board Huawei Proprietary and Confidential Issue 0.1 Removing the Mini PCIe Adapter from the Main Board Page Certification Model name ME909u-521 CertificationsCertifications GCF Weee Medical Device Safety InformationInterference Area with Inflammables and Explosives Airline Security Safety of ChildrenTraffic Security Environment Protection Emergency Call Care and MaintenanceLaws and Regulations Observance Regulatory Information FCC Statement Appendix a Circuit of Typical Interface Appendix B Acronyms and Abbreviations Acronym or Abbreviation Expansion ISO HSPA+Hsupa LCP