GNSS Module Series
LC98S_EVB_User_Guide 12 / 27
Table 2: Detailed EVB Interfaces
The test point assignment is shown below:
Table 3: J104 Pin Assignment
RXD
TXD
SCL
SDA
GND
BOOT
1PPS
USB_DM
USB_DP
3.3V
Function
Interfaces
Description
Power Supply
J303
Micro-USB
Power supply input:
⚫
DC power supply: 4.5
–5.5 V, typ. 5.0 V
⚫
Current capability should be > 100 mA
Communication Interface
J303
Micro-USB
Standard NMEA sentence output and PSTM
command input and output
.
RF Input
J103
Active antenna connector
The antenna in the kit supports:
⚫
GPS L1 C/A
⚫
GLONASS L1
⚫
Galileo E1
⚫
BDS B1I
⚫
QZSS L1 C/A
⚫
SBAS L1
Signal Indication
D402
Indication
LEDs
TXD
(Red LED)
Flashing: Data are output from UART TXD
pin.
Extinct or Bright: No data are output form
UART TXD pin.
Module Power
(Green LED)
Bright: The module is powered on.
Extinct: The module is powered off.
Switches and Buttons
S201
Power switch
Power the EVB on/off.
S402
BOOT button
Press and hold the BOOT button before
powering on the EVB to put the module into
Boot download mode.
S403
RESET button
Short press on the button to reset the
module.
Test Points
J104
Test points
Pins are detailed in
below.
