Globalsat EB-3531 - Page 5

EB-3531
Specifications are subject to be changed without notice.
Page 5 of 21
Version 1.2.1
Pin NO. Pin Name I/O Remark
1. RXB I Serial input (default null)
2. TXB O Serial output (default null)
3. TIMEMARK I/O One pulse per second.
4. TXA O Serial output (default NMEA)
5. RXA I Serial input (default NMEA)
6. NC NC
7. GPIO0 I/O General purpose I/O
8. GPIO1 I/O General purpose I/O
9. RF_PWR CTR RF Power ON/OFF.
10. ON_OFF I Edge triggered soft on/off request. It must be low for normal application.
11. VBAT PWR Backup battery supply voltage
12. VCC PWR Main power supply to the engine board.
13. GPIO13 I/O General purpose I/O
14. GPIO14 I/O General purpose I/O
15. GPIO15
O GPS status output.
16. BOOTSEL I/O Set this pin to high for programming flash.
17. VCC_RF PWR Regulated RF power output.
18. GND G Ground.
19. RF IN RF GPS antenna input.
20. GND G Ground.
21. GND G Ground.
22. GND G Ground.