u-blox LEA-6 Series - Contents; Table of Contents

LEA-6 / NEO-6 - Hardware Integration Manual
GPS.G6-HW-09007-A Preliminary Contents
Page 5 of 62
Contents
Preface ................................................................................................................................ 3
Contents .............................................................................................................................. 5
1 Hardware description .................................................................................................. 8
1.1 Overview .............................................................................................................................................. 8
1.2 Architecture .......................................................................................................................................... 8
1.3 Power management ............................................................................................................................. 9
1.3.1 Connecting power ........................................................................................................................ 9
1.3.2 Operating modes ........................................................................................................................ 10
1.4 Antenna supply - V_ANT (LEA-6) ....................................................................................................... 11
1.5 System functions ................................................................................................................................ 11
1.5.1 EXTINT - External interrupt pin ..................................................................................................... 11
1.5.2 System monitoring ...................................................................................................................... 11
1.6 Interfaces ............................................................................................................................................ 11
1.6.1 UART ........................................................................................................................................... 11
1.6.2 USB ............................................................................................................................................. 11
1.6.3 Display Data Channel (DDC) ........................................................................................................ 12
1.6.4 SPI (NEO-6) .................................................................................................................................. 14
1.7 I/O pins ............................................................................................................................................... 17
1.7.1 RESET_N ...................................................................................................................................... 17
1.7.2 EXTINT0 ...................................................................................................................................... 17
1.7.3 AADET_N (LEA-6) ........................................................................................................................ 17
1.7.4 Configuration pins (LEA-6S/6A, NEO-6) ....................................................................................... 17
2 Design-in ..................................................................................................................... 18
2.1 Design-in checklist .............................................................................................................................. 18
2.1.1 Layout design-in checklist ............................................................................................................ 18
2.1.2 Design considerations .................................................................................................................. 20
2.2 LEA-6 design ...................................................................................................................................... 21
2.2.1 LEA-6 passive antenna design ...................................................................................................... 21
2.2.2 Pin description for antenna designs (LEA-6) ................................................................................. 22
2.3 NEO-6 design ..................................................................................................................................... 24
2.3.1 Passive antenna design (NEO-6) ................................................................................................... 24
2.4 Layout ................................................................................................................................................ 25
2.4.1 Footprint and paste mask ............................................................................................................ 25
2.4.2 Placement ................................................................................................................................... 26
2.4.3 Antenna connection and grounding plane design ....................................................................... 28
2.4.4 Antenna micro strip ..................................................................................................................... 29
2.5 Antenna and antenna supervisor ........................................................................................................ 30
2.5.1 Passive antenna ........................................................................................................................... 31
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