NavSpark PX1172R Getting Started page 7

Interface of RTK EVB (3/3)
NAME
VCC_RF
Power for antenna or external LNA
RF_IN1
RF input #1
RTK Position: RF_IN1 antenna position
RF_IN2
Not Used
RSTN
External active-low reset input. Only needed when power supply rise time is
very slow or software controlled reset is desired.
BOOT_SEL
Leave unconnected for normal use. Pull-low for loading firmware into empty
or corrupted flash memory from ROM mode.
TRIG
External interrupt trig input.
G/H
Jumper G/H must be short for normal use.
DESCRIPTION