原创 DP312 pin to pin 寰天ET312 sirf3(gsc3f-7979) 模块

Pin NO.

Pin Name

Remark

 1.            

GND

Ground.

 2.            

RF

Connect to Patch Antenna or Connect to External Active Antenna. While external antenna is used, the optional power is needed.

 3.            

GND

Ground.

 4.            

GND

Ground.

 5.            

GND

Ground.

 6.            

GND

Ground.

 7.            

VIN

This is the main DC supply for a 3.3V +- 5% DC input power module board.

 8.            

BATTERY

This is the battery backup input that powers the SRAM and RTC when main power is removed. Typical current draw is 15uA. Without an external backup battery, the module/engine board will execute a cold star after every turn on. To achieve the faster start-up offered by a hot or warm start, a battery backup must be connected. The battery voltage should be between 2.0v and 5.0v.

 9.            

GPIO1

User can use this I/O pin for special function.For example, on/off LED

10.        

TX

This is the main transmits channel for outputting navigation and measurement data to user’s navigation software or user written software.Output TTL level, 0V ~ 2.85V

11.        

RX

This is the main receive channel for receiving software commands to the engine board from SiRFdemo software or from user written software.

12.        

GND

Ground.

13.        

GND

Ground.