사용자 설명서차례1 Introduction81.1 Key Features at a Glance81.2 EHS8 System Overview132 Interface Characteristics142.1 Application Interface142.1.1 USB Interface142.1.2 Serial Interface ASC0152.1.3 Serial Interface ASC1152.1.4 UICC/SIM/USIM Interface162.1.5 Digital Audio Interface182.1.6 GPIO Interface182.1.7 I2C Interface192.1.8 SPI Interface192.1.9 HSIC Interface192.1.10 PWM Interfaces202.1.11 Pulse Counter202.1.12 Status LED202.1.13 Fast Shutdown202.2 RF Antenna Interface212.2.1 Antenna Installation222.3 GPS Interface232.3.1 GPS Receiver232.3.2 GPS Antenna232.4 Sample Application233 Operating Characteristics263.1 Operating Modes263.2 Power Supply264 Mechanical Dimensions, Mounting and Packaging284.1 Mechanical Dimensions of EHS8285 Regulatory and Type Approval Information305.1 Directives and Standards305.2 SAR requirements specific to portable mobiles335.3 Reference Equipment for Type Approval335.4 Compliance with FCC and IC Rules and Regulations356 Document Information366.1 Revision History366.2 Related Documents366.3 Terms and Abbreviations366.4 Safety Precaution Notes40Appendix407.1 List of Parts and Accessories40Signals of the SIM interface (SMT application interface)15GPIO lines and possible alternative assignment17Return loss in the active band20Overview of operating modes25Directives29Standards of North American type approval29Standards of European type approval29Requirements of quality30People’s Republic of China30limits31List of parts and accessories40Molex sales contacts (subject to change)41EHS8 system overview11USB circuit12Serial interface ASC013Serial interface ASC114External UICC/SIM/USIM card holder circuit16Schematic diagram of EHS8 sample application24EHS8– top and bottom view27Dimensions of EHS8 (all dimensions in mm)28Reference equipment for Type Approval33크기: 921킬로바이트페이지: 43Language: English매뉴얼 열기