6
Interface
UC-08-C43 EN R1.0
3.5
Status Indicator
Indicator Symbol Name
Description
D71
UART1-RX
Light on when receiving data; otherwise off
D72
UART1-TX
Light on when sending data; otherwise off
D73
UART2-RX
Light on when receiving data; otherwise off
D74
UART2-TX
Light on when sending data; otherwise off
D80
Power indicator
Light on when there is power supply;
otherwise off
D66
PPS status indicator
Light on with low level voltage; off with
high level voltage
3.6
GNSS Power Supply Interface
GNSS adapter has three power supply interfaces.
Symbol Description
Pin 1
Pin 2
J1
VDDIO interface
3.3 V power supply
from the bottom
board
VDDIO power supply interface
J9
Backup battery interface
V_BACK power supply interface
J10
DCDC_IN interface
DCDC_IN power supply interface
Each interface has two pins. Pin 1 is connected to the 3.3 V power on the bottom board,
and pin 2 is connected to different power domains. By default, the jumper caps are
installed and the adapter is supplied by the power on the board. If you use an external
voltage to power the interfaces, connect the power to pin 2.
