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發(fā)視頻MAX-7_NEO-7_LEA-7_HardwareIntegrationManual_(GPS.G7-HW-11006)
2014-06-09 |
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2306KB |
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資料介紹
MAX-7_NEO-7_LEA-7_HardwareIntegrationManual_(GPS.G7-HW-11006)
Contents?
Preface ................................................................................................................................ 3?
Contents .............................................................................................................................. 5?
1 Quick reference ............................................................................................................ 8?
2 Hardware description .................................................................................................. 8?
2.1 Overview ................................................................................................................................................................................. 8?
2.2 Architecture .............................................................................................................................................................................8?
2.3 Operating modes .....................................................................................................................................................................9?
2.3.1 Continuous Mode ................................................................................................................................................................9?
2.3.2 Power Save Mode ................................................................................................................................................................9?
2.4 Configuration ..........................................................................................................................................................................9?
2.5 Connecting power ...................................................................................................................................................................9?
2.5.1 VCC: Main Supply Voltage ................................................................................................................................................... 9?
2.5.2 VCC_IO: IO Supply Voltage (MAX-7)................................................................................................................................... 10?
2.5.3 V_BCKP: Backup Supply Voltage ........................................................................................................................................ 10?
2.5.4 VDD_USB: USB interface power supply (NEO-7/LEA-7) ......................................................................................................... 10?
2.5.5 VCC_RF: Output Voltage RF section.................................................................................................................................... 10?
2.5.6 V_ANT: Antenna supply (NEO-7/LEA-7) ............................................................................................................................... 11?
2.6 Interfaces ...............................................................................................................................................................................11?
2.6.1 UART ................................................................................................................................................................................11?
2.6.2 USB ...................................................................................................................................................................................11?
2.6.3 Display Data Channel (DDC) ...............................................................................................................................................13?
2.6.4 SPI (NEO-7) ........................................................................................................................................................................ 13?
2.7 I/O pins ..................................................................................................................................................................................13?
2.7.1 RESET_N: Reset input ......................................................................................................................................................... 13?
2.7.2 EXTINT: External interrupt .................................................................................................................................................. 13?
2.7.3 D_SEL: Interface select (NEO-7)...........................................................................................................................................14?
2.7.4 TX-ready signal ..................................................................................................................................................................14?
2.7.5 ANT_ON: Antenna ON (LNA enable) (NEO-7N, MAX-7Q, MAX-7C) ...................................................................................... 14?
2.7.6 Antenna Short circuit detection (LEA-7N, MAX-7W) ............................................................................................................ 14?
2.7.7 Antenna open circuit detection ..........................................................................................................................................14?
2.7.8 TIMEPULSE ........................................................................................................................................................................ 14?
3 Design ......................................................................................................................... 15?
3.1 Design checklist ..................................................................................................................................................................... 15?
3.1.1 Schematic checklist ............................................................................................................................................................15?
3.1.2 Layout checklist ................................................................................................................................................................. 16?
3.1.3 Antenna checklist ..............................................................................................................................................................16?
3.2 Design considerations for minimal designs ..............................................................................................................................16?
3.2.1 Minimal design (NEO-7N) ...................................................................................................................................................17?
3.2.2 Minimal design (MAX-7Q) .................................................................................................................................................. 19?
3.2.3 Minimal design (LEA-7N) .................................................................................................................................................... 20?
3.3 Layout ...................................................................................................................................................................................21?
3.3.1 Footprint and paste mask ...................................................................................................................................................21?
3.3.2 Placement ......................................................................................................................................................................... 22?
3.3.3 Antenna connection and ground plane design .................................................................................................................... 23?
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