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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 UE910 MODULE CONNECTIONS ............................................................................................................................... 11
3.1 PIN-OUT ......................................................................................................................................................................... 11
3.1.1 LGA Pads Layout ..................................................................................................................................................... 17
4 HARDWARE COMMANDS ........................................................................................................................................ 18
4.1 TURNING ON THE UE910 ................................................................................................................................................... 18
4.2 TURNING OFF THE UE910 .................................................................................................................................................. 25
4.3 UE910 UNCONDITIONAL SHUTDOWN .................................................................................................................................... 28
5 POWER SUPPLY ....................................................................................................................................................... 31
5.1 POWER SUPPLY REQUIREMENTS ............................................................................................................................................ 31
5.2 POWER CONSUMPTION ....................................................................................................................................................... 32
5.3 GENERAL DESIGN RULES ...................................................................................................................................................... 33
5.3.1 Electrical Design Guidelines ................................................................................................................................... 33
5.3.2 Thermal Design Guidelines ..................................................................................................................................... 37
5.3.3 Power Supply PCB layout Guidelines ...................................................................................................................... 38
6 GSM/WCDMA RADIO SECTION ............................................................................................................................... 40
6.1 UE910 PRODUCT VARIANTS ................................................................................................................................................ 40
6.2 TX OUTPUT POWER ............................................................................................................................................................ 40
SENSITIVITY ............................................................................................................................................................................. 43
6.3 GSM/WCDMA ANTENNA REQUIREMENTS ............................................................................................................................ 43
6.4 GSM/WCDMA - PCB LINE GUIDELINES ................................................................................................................................ 45
6.5 PCB GUIDELINES IN CASE OF FCC CERTIFICATION ...................................................................................................................... 47
6.5.1 Transmission line design ........................................................................................................................................ 47
6.5.2 Transmission line measurements ........................................................................................................................... 48
6.6 ANTENNA - INSTALLATION GUIDELINES ................................................................................................................................... 50
7 LOGIC LEVEL SPECIFICATIONS .................................................................................................................................. 51
7.1 UNCONDITIONAL SHUTDOWN ............................................................................................................................................... 52
8 USB PORT ................................................................................................................................................................ 53
8.1 USB 2.0 HS ...................................................................................................................................................................... 53
9 SPI PORT ................................................................................................................................................................. 54
9.1 SPI CONNECTIONS .............................................................................................................................................................. 54
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