Cavli Wireless C16QS - UART Interface

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C16QS Hardware Manual
3.6 UART Interface
The C16QS module provides three sets of UART interfaces. Main serial port and Auxiliary serial ports, serial
port level is 1.8V.
3.6.1 UART0 Serial Port
The pins 27 and 28 of the module are UART0 serial port pins. UART0 serial interface can only be used as the
debug UART of the module. The pins are defined as follows：
Table 3-8 UART0 serial port pin definition
NOTE
• It is always advisable to have a test point for this UART in your design for debugging purposes.
3.6.2 UART1 Serial Port
The serial port can realize AT interactive instructions, print program log information, and interact with
peripheral data and firmware update.
The module's serial port baud rate can be set to 600,1200,2400,4800, 9600, 19200, 38400, 57600, 115200,
230400, 460800,921600,1152000, 3000000 bps.
The default baud rate is 115200 bps and maximum baud rate is 3000000 bps
Pin No.
Signal name
I/O
Description
Parameter
Level value (V)
Remark
min
typical
max
27
UART0_TX
DO
Data
transmission
VIH
1.3
1.8
1.9
VIL
0
0.45
28
UART0_RX
DI
Data
reception
VOH
1.3
1.8
1.9
VOL
-0.3
0.6