Reference ground, Rdr-3100 user manual – RoyalTek RDR-3100 User Manual
Page 10
RDR-3100 User Manual
15 RXD2 (SiRF 3
RXD2)
I
Can bus data (Receive)
Car PC (UAR2)
Vih > 2V Vil<0.8V
16 GND
G Ground
Reference Ground
17 GND
G Ground
18 GND
G Ground
Reference Ground
19 N.C
NC
20 N.C
NC
z GPS_5V
This is the DC power supply input pin for system. .
z GND
GND provides the reference ground.
z BOOT
Set this pin to high for programming flash.
z RXD1
This is the main receiver channel and is used to receive software commands to the board from SIRFdemo software or from user written
software.
z RXD2
This is the auxiliary receiving channel communicated with car pc with can bus
z TXD1
This is the main transmitting channel and is used to output navigation and measurement data to SiRFdemo or user written software.
z TXD2
This is the auxiliary transmitting channel communicated with car pc with can bus
z ODOMETER
This pin provides for connecting to odometer.
z RTC (Backup voltage)
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