Power Supply Time Sequence | Huawei ME909 manual

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

3.4 Power Supply Time Sequence

Power on sequence

Do not toggle RESIN_N pin during the power on sequence. Pulling RESIN_N pin low will extend time for module startup.

Figure 3-2Power on timing sequence

Parameter	Remarks	Time (Nominal value)	Unit

TPD+	Power Valid to USB	14	s
	D+ high

Power off Sequence

Cutting off 3.3 V will power off the module.

Figure 3-3Power off timing sequence

		Huawei Proprietary and Confidential	15
	Issue 0.1 (2013-06-09)	Copyright © Huawei Technologies Co., Ltd.

Image 15

Huawei ME909 manual Power Supply Time Sequence, Parameter Remarks Time Nominal value Unit, Power Valid to USB + high

Contents

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