User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.9 – 07-02-2012
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Contents
1 INTRODUCTION ......................................................................................................................................................... 6
1.1 SCOPE ................................................................................................................................................................................ 6
1.2 AUDIENCE ........................................................................................................................................................................... 6
1.3 CONTACT INFORMATION, SUPPORT .......................................................................................................................................... 6
1.4 DOCUMENT ORGANIZATION ................................................................................................................................................... 7
1.5 TEXT CONVENTIONS .............................................................................................................................................................. 8
1.6 RELATED DOCUMENTS ........................................................................................................................................................... 8
1.7 DOCUMENT HISTORY ............................................................................................................................................................ 9
2 OVERVIEW .............................................................................................................................................................. 10
3 HE910 MODULE CONNECTIONS ............................................................................................................................... 11
3.1 PIN-OUT ......................................................................................................................................................................... 11
3.1.1 LGA Pads Layout (HE910 and HE910-GA) .............................................................................................................. 17
3.1.2 LGA Pads Layout (HE910-D) ................................................................................................................................... 18
4 HARDWARE COMMANDS ........................................................................................................................................ 19
4.1 TURNING ON THE HE910 ................................................................................................................................................... 19
4.2 TURNING OFF THE HE910 .................................................................................................................................................. 24
4.3 HE910 UNCONDITIONAL SHUTDOWN .................................................................................................................................... 27
5 POWER SUPPLY ....................................................................................................................................................... 30
5.1 POWER SUPPLY REQUIREMENTS ............................................................................................................................................ 30
5.2 POWER CONSUMPTION ....................................................................................................................................................... 31
5.3 GENERAL DESIGN RULES ...................................................................................................................................................... 32
5.3.1 Electrical Design Guidelines ................................................................................................................................... 32
5.3.2 Thermal Design Guidelines ..................................................................................................................................... 36
5.3.3 Power Supply PCB layout Guidelines ...................................................................................................................... 37
6 GSM/WCDMA ANTENNA......................................................................................................................................... 38
6.1 GSM/WCDMA ANTENNA REQUIREMENTS ............................................................................................................................ 38
6.2 GSM/WCDMA - PCB LINE GUIDELINES ................................................................................................................................ 40
6.3 GSM/WCDMA ANTENNA - INSTALLATION GUIDELINES ........................................................................................................... 41
6.4 ANTENNA DIVERSITY REQUIREMENTS ..................................................................................................................................... 42
6.5 GPS ANTENNA REQUIREMENTS (HE910 AND HE910-GA) ....................................................................................................... 43
6.5.1 Combined GPS Antenna ......................................................................................................................................... 43
6.5.2 Linear and Patch GPS Antenna ............................................................................................................................... 43
6.5.3 LNA and Front End Design Considerations ............................................................................................................. 43
6.5.4 GPS Antenna - PCB Line Guidelines ........................................................................................................................ 44
6.5.5 GPS Antenna - Installation Guidelines .................................................................................................................... 45
7 LOGIC LEVEL SPECIFICATIONS .................................................................................................................................. 46
7.1 RESET SIGNAL .................................................................................................................................................................... 47
8 USB PORT ................................................................................................................................................................ 48
8.1 USB 2.0 HS ...................................................................................................................................................................... 48
9 SPI PORT ................................................................................................................................................................. 49