NavSpark PX1175RD Manual page 7

46,47
48
49
50
BOOT_SEL
51,52
53
54
The unshown inner grids on the bottom side of the module are GND pads.
The RTCM correction data can be input from either pin-43 RXD_B or pin-26 RXD2_B, but not both. NMEA result is
output over TXD_B.
No connection, empty pin
NC
Ground
GND
External active-low reset input to the baseband.
RSTN
Only needed when power supply rise time is very slow or software controlled
reset is desired.
No connection for normal use. Pull-low for loading firmware into empty or
corrupted Flash memory from ROM mode.
No connection, empty pin
NC
One-pulse-per-second (1PPS) time mark output, 3.3V LV-TTL. The rising edge
1PPS
synchronized to UTC second when getting 3D position fix. The pulse duration is
about 100msec at rate of 1 Hz.
No connection, empty pin
NC
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