GNSS Module Series
L76C EVB User Guide
L76C_EVB_User_Guide 15 / 26
Table 4: L76C Switches and Buttons
3.5. Operation Status Indication LEDs
D105
D106
Figure 8: Operation Status Indication LEDs
Table 5: Operation Status Indication LEDs
Part No.
Name
I/O
Description
S102
RESET
DI
Press and then release the button, the module
will be reset.
S103
-
-
Reserved
S201
POWER
PI
Control power supply via Micro-USB interface.
S301
USB
←→
SD
(serial port
alternation switch)
IO
L76C EVB supports data communication via both
Micro-USB and SD card interfaces which are
controlled and switched by the S301 switch.
Part
Name
I/O
Description
D105
TXD
DO
Flash: the module is turned on successfully, and
either Micro-USB or SD card interface can be used to
output messages.
Extinct: failed to turn on the module.
D106
1PPS
DO
Flash: successful fix. The frequency is 1Hz.
Extinct: no fix.
