GNSS Module Series
LC76G_Series_EVB_User_Guide
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Table 4: J402 Pin Detailed Description
Test Point No. Test Point Label Test Point Function I/O
Description
1
PIN1
GND
-
Ground
2
3
U103: Pin 3
DI
RXD: Receives data
3
5
U103: Pin 5
-
Reserved
4
7
U103: Pin 7
-
Reserved
5
9
U103: Pin 9
DI
RESET_N: Resets the module
6
11
U103: Pin 11
-
NC (Not Connected)
7
13
U103: Pin 13
DI
ANT_ON: Power control for
external LNA or active antenna in
power saving mode
8
15
U103: Pin 15
-
Reserved
9
17
U103: Pin 17
DI
I2C_SCL: I2C serial clock
10
19
U103: Pin 19
-
Reserved
11
21
U103: Pin 21
DO
GEOFENCE: Indicates geofence
status
12
23
U103: Pin 23
DO
3D_FIX
*
:
3D position fix indication
13
25
U103: Pin 25
DI
SPI_CLK
*
: SPI clock signal
14
27
U103: Pin 27
DI
SPI_MOSI
*
: SPI master output,
slave input
15
No label
-
-
NC
16
No label
-
-
NC
17
28
GND
-
Ground
18
26
U103: Pin 26
DO
SPI_MISO
*
: SPI master input,
slave output
19
24
U103: Pin 24
DI
D_SEL:
Selects UART/SPI
interface to download
20
22
U103: Pin 22
DO
JAM_IND
*
: Jamming indication
21
20
U103: Pin 20
DI
SPI_CS
*
: SPI chip-select
22
18
U103: Pin 18
-
Reserved
