Quectel BG96 Series Hardware Design page 38


UART1 interface supports 9600, 19200, 38400, 57600, 115200, 230400, 460800 and 921600 baud
rates, and the default is 115200bps. It is used for data transmission and AT command
communication.

UART2 interface supports 115200bps baud rate. It is used for module debugging and log output.

UART3 interface supports 115200bps baud rate. It is used for outputting GNSS data and NEMA
sentences.
The following tables show the pin definition of the three UART interfaces.
Table 11: Pin Definition of UART1 Interface
Pin Name Pin No.
DTR 30
RXD 34
TXD 35
CTS 36
RTS 37
DCD 38
RI 39
Table 12: Pin Definition of UART2 Interface
Pin Name Pin No.
DBG_TXD 23
DBG_RXD 22
Table 13: Pin Definition of UART3 Interface
Pin Name Pin No.
UART3_TXD 27
UART3_RXD 28
BG96_Hardware_Design
I/O Description
DI Data terminal ready
DI Receive data
DO Transmit data
DO Clear to send
DI Request to send
DO Data carrier detection
DO Ring indicator
I/O Description
DO Transmit data
DI Receive data
I/O Description
DO Transmit data
DI Receive data
LTE Module Series
BG96 Hardware Design
Comment
1.8V power domain
1.8V power domain
1.8V power domain
1.8V power domain
1.8V power domain
1.8V power domain
1.8V power domain
Comment
1.8V power domain
1.8V power domain
Comment
1.8V power domain
1.8V power domain
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