SkyTraq PX1120S - Mechanical Characteristics; Pinout Description

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SkyTraq Technology, Inc. Preliminary Draft www.skytraq.com.tw
MECHANICAL CHARACTERISTICS
PINOUT DESCRIPTION
Pin No.
Name
Description
1
BOOT_SEL
No connection for normal use. Pull-low for loading firmware into empty or
corrupted Flash memory from ROM mode.
2
SPI_MISO
Not used. Leave unconnected
3
1PPS
One-pulse-per-second (1PPS) time mark output, 3.3V LVTTL. The rising edge
synchronized to UTC second when getting 3D position fix. The pulse duration is
about 100msec at rate of 1 Hz.
4
NC
No connection, empty pin
5
NC
No connection, empty pin
6
NC
No connection, empty pin
7
NC
No connection, empty pin
8
RSTN
External active-low reset input to the baseband.
Only needed when power supply rise time is very slow or software controlled
reset is desired.
9
SPI_CSN
Not used. Leave unconnected
10
GND
Ground
11
RF_IN
RF signal input, connect to L1 GNSS antenna.
3.2V active antenna bias on RF_IN.
12
GND
Ground
13
GND
Ground