G6
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
10
3.4 UART
Signal
Pin
I/O
Function
Remarks
TX1
20
DO
Data transmitting
Enabled by default
RX1
21
DI
Data receiving
TX2
18
DO
Data transmitting
Disabled by default
RX2
19
DI
Data receiving
UART outputs NMEA data at UTC second boundary. By default, UART1 is enabled and UAR2 is
disabled. The host can switch the work mode, baudrate, and UART status through commands. For
details, see
Neoway_GNSS_Receiver_Commands_Manual
.
G6 supports baudrate ranging from 4800bps to 230400bps. The default baud rate is 9600bps.
Data format: 1 start bit, 8 data bits, 1 stop bit, no checksum bit.
Figure 3-4 shows the connection of UART interface. If the UART does not match the logic voltage of
the MCU, add a level shifting circuit outside of G6.
Figure 3-4 UART connection
RXD
TXD
MCU_TXD
MCU_RXD
GND
GND
GNSS Module
Client
3.5 1PPS
1PPS signals are output a few seconds after G6 fixes position. Figure 3-5 shows 1PPS timing.
