24
Customize the embedded system based on
Your
Idea
⚫
Support auto flow control mode for UART1-5
The J10 is 3-pin connector. The debug serial port baud rate is 1500000.
Pin Signal
Description
Pin
Signal
Description
1
UART2DBG_RX
Serial data input
2
UART2DBG_TX
Serial data output
3
GND
Ground
The J11, J12 are RS232 serial ports.
J11
Pin Signal
Description
Pin Signal
Description
1
VCC3V3_SYS
3.3V power supply
2
UART4_TX_M0
Transmit Data
3
UART4_RX_M0
Receive Data
4
GND
Ground
J12
Pin Signal
Description
Pin Signal
Description
1
VCC3V3_SYS
3.3V power supply
2
UART5_TX_M1
Transmit Data
3
UART5_RX_M1
Receive Data
4
GND
Ground
2.15 RS485 (J32, JP2)
SN75176B Differential bus transceiver.
⚫
Bidirectional Transceivers
⚫
± 200mV Receiver Input Sensitivity
⚫
50mV Type Receiver Input Hysteresis
J32
Pin Signal
Description
Pin
Signal
Description
1
GND
Ground
2
RS485_B
RS-485 Data Line
3
RS485_A
RS-485 Data Line
3
2
1
2
1
3
4