2019年6月9日 (日) 11:38的版本

1 Overview

RMB 10 块的高性能 BDS/GNSS 全星座 SoC 芯片

片上集成射频前端，数字基带处理器，32 位的 RISC CPU，电源管理功能。

AT6558 支持多种卫星导航系统，包括中国的 BDS（北斗卫星导航系统），美国的 GPS，俄罗斯的 GLONASS，欧盟的 GALILEO，日本的 QZSS 以及卫星增强系统 SBAS（WAAS，EGNOS，GAGAN，MSAS）。其是一款真正意义的六合一多模卫星导航单芯片，可以同时接收六个卫星导航系统的 GNSS 信号，并且实现联合定位、导航与授时

• 2.7 ~ 3.6V
• BDS/GPS 双模连续运行：<23mA（@3.3V）
• 待机：<10uA（@3.3V）

2 框图

3 Pinmap

4 参考设计

5 BOM

6 ATGM336H-5N

为了充分发挥 ATGM336H-5N 的优良性能，用户在使用本模块时需要注意以下几点：

• 采用低纹波的 LDO 电源，将纹波控制在 50mVpp 以内。
• 模块附近尽量不要走其它频率高、幅度大的数字信号。模块下面全部以地线填充为佳。
• 天线接口尽量靠近模块的 RF 输入引脚，并注意 50 欧姆的阻抗匹配。
• 模块本身具有有源天线接入、拔出、短路检测电路，同时在天线意外短路时，对天线的供电电流进行限制(50mA)，起到保护的作用。

在上述 3 种天线端口状态发生变化时，可以从串口输出相应的信息。如

$GPTXT,01,01,01,ANTENNA SHORT*63 
$GPTXT,01,01,01,ANTENNA OPEN*25 
$GPTXT,01,01,01,ANTENNA OK*35

7 串口输出

$GNGGA,012410.000,4036.4867,N,11647.3309,E,1,09,1.0,172.2,M,0.0,M,,*7A
$GNGLL,4036.4867,N,11647.3309,E,012410.000,A,A*41
$GPGSA,A,3,23,08,09,27,16,07,26,,,,,,2.0,1.0,1.7*36
$BDGSA,A,3,06,10,,,,,,,,,,,2.0,1.0,1.7*21
$GPGSV,2,1,08,07,27,310,29,08,49,207,34,09,38,280,31,16,56,046,29*79
$GPGSV,2,2,08,23,39,231,29,26,31,071,25,27,80,135,34,31,05,128,*77
$BDGSV,1,1,04,06,18,189,20,07,,,24,10,59,295,25,11,,,26*60
$GNRMC,012410.000,A,4036.4867,N,11647.3309,E,0.00,293.74,070619,,,A*74
$GNVTG,293.74,T,,M,0.00,N,0.00,K,A*28
$GNZDA,012410.000,07,06,2019,00,00*45
$GPTXT,01,01,01,ANTENNA OK*35

$GNGGA,012411.000,4036.4867,N,11647.3310,E,1,09,1.0,172.3,M,0.0,M,,*72
$GNGLL,4036.4867,N,11647.3310,E,012411.000,A,A*48
$GPGSA,A,3,23,08,09,27,16,07,26,,,,,,2.0,1.0,1.7*36
$BDGSA,A,3,06,10,,,,,,,,,,,2.0,1.0,1.7*21
$GPGSV,2,1,08,07,27,310,29,08,49,207,34,09,38,280,31,16,56,046,29*79
$GPGSV,2,2,08,23,39,231,29,26,31,071,25,27,80,135,34,31,05,128,*77
$BDGSV,1,1,04,06,18,189,20,07,,,24,10,59,295,25,11,,,26*60
$GNRMC,012411.000,A,4036.4867,N,11647.3310,E,0.00,293.74,070619,,,A*7D
$GNVTG,293.74,T,,M,0.00,N,0.00,K,A*28
$GNZDA,012411.000,07,06,2019,00,00*44
$GPTXT,01,01,01,ANTENNA OK*35

$GNGGA,012412.000,4036.4867,N,11647.3311,E,1,09,1.0,172.2,M,0.0,M,,*71
$GNGLL,4036.4867,N,11647.3311,E,012412.000,A,A*4A
$GPGSA,A,3,23,08,09,27,16,07,26,,,,,,2.0,1.0,1.7*36
$BDGSA,A,3,06,10,,,,,,,,,,,2.0,1.0,1.7*21
$GPGSV,2,1,08,07,27,310,29,08,49,207,34,09,38,280,32,16,56,046,29*7A
$GPGSV,2,2,08,23,39,231,29,26,31,071,26,27,80,135,35,31,05,128,*75
$BDGSV,1,1,04,06,18,189,20,07,,,24,10,59,295,25,11,,,26*60
$GNRMC,012412.000,A,4036.4867,N,11647.3311,E,0.00,293.74,070619,,,A*7F
$GNVTG,293.74,T,,M,0.00,N,0.00,K,A*28
$GNZDA,012412.000,07,06,2019,00,00*47
$GPTXT,01,01,01,ANTENNA OK*35

• $GNGGA: Time, position, and fix related data of the receiver.
• $GNGLL: Position, time and fix status.
• $GNGSA/$GPGSA/$BDGSA: Used to represent the ID’s of satellites which are used for position fix. When both GPS and Beidou

satellites are used in position solution, a $GNGSA sentence is used for GPS satellites and another $GNGSA sentence is used for Beidou satellites. When only GPS satellites are used for position fix, a single $GPGSA sentence is output. When only Beidou satellites are used, a single $BDGSA sentence is output.

• $GPGSV/$BDGSV: Satellite information about elevation, azimuth and CNR, $GPGSV is used for GPS satellites, while
• $BDGSV is used for Beidou satellites
• $GNRMC: Time, date, position, course and speed data.
• $GNVTG: Course and speed relative to the ground.
• $GNZDA: UTC, day, month and year and time zone.

8 Reference

• AT6558 Official Websit
• AT6558 Datasheet
• AT6558 App SCH