Huawei EM820W manual Contents

HUAWEI EM820W HSPA+ PC Embedded Module
Hardware Guide	Contents

				Contents
1 Introduction				1
1.1	Overview			1
2 Overall Description				2
2.1 About This Chapter				2
2.2	Function Overview			2
2.3	Circuit Block Diagram			3
2.4 Application Block Diagram				4
3 Description of the Application Interfaces				5
3.1 About This Chapter				5
3.2	Mini PCI Express Interface			5
3.3	Power Sources and Grounds			8
3.4	Power Supply Time Sequence			8
3.5	USB Signals			9
3.6	USIM Signals			10
	3.6.1 USIM Interface Schematic Reference			10
	3.6.2 Design Guide			11
	3.6.3 Certification Test	................................................................................................................		13
3.7	W_DISABLE# Signal			14
3.8 LED_WWAN# Signal				14
3.9 WAKE_NB_N Signal				16
3.10 NC Pins				16
4 RF Specifications				17
4.1	Operating Frequencies			17
4.2	Conducted RF Measurement			17
	4.2.1 Test Environment			17
	4.2.2 Test Standards			18
4.3	Conducted Rx Sensitivity and Tx Power			18
	4.3.1 Conducted Receive Sensitivity			18
	4.3.2 Conducted Transmit Power			19
4.4 Antenna Design Requirements				20
			Huawei Proprietary and Confidential
Issue 01 (2010-12-31)				i
		Copyright © Huawei Technologies Co., Ltd.