Quectel L89 R2.0 - Page 15

GNSS Module Series
L89_R2.0_EVB_User_Guide 14 / 25
Test point distribution is shown below:
Table 3: J401 Pin Assignment
RXD
TXD
1PPS
RESET_N
GND
3.0V
SCL
SDA
3D_FIX
GND
Table 4: Detailed Description of J401 Pin
S302
WAKEUP Button
press the button for a short time and then
release to wake up the module from Backup
mode.
Test Points
J401
Test Points
Pins are detailed in Table 3 below.
Pin Name
I/O
Description
3.0V
PI
NC
SCL
I/O
I2C serial clock
SDA
I/O
I2C serial data
3D_FIX
DO
3D fix indication
GND
-
Ground
RXD
DI
Receives data
TXD
DO
Transmits data
1PPS
DO
1 pulse per second
RESET_N
DI
Resets the module
GND
-
Ground