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MAX-7_NEO-7_LEA-7_HardwareIntegrationManual_(GPS.G7-HW-11006)
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2014-06-09
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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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si26
2014-09-15
0 回复 举报好东西，官方网站都没找到！ 收起回复
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yufuming007
2014-08-14
0 回复 举报要用到，看看，谢谢 收起回复
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