Stone STAD133WT-15, Equipment Manual

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STAD133WT-15 Equipment Manual
Release 01/2019
6
2
Interface Description
2.1 Serial Ports
STAD133WT-15 is integrated with 4 serial ports. UART1, UART2, UART3,
UART0 are RS-232 level converted, All have been treated with anti-static
treatment.
UART3,UART4 is RS232 and RS485 hardware reuse
（
UART3,UART4 is
either for RS232, either for RS485, t
hey can’t be used at the same time
）
.
Serial port definition as table below,
Notice
：
UART2 serial port is the debug port. There will be printing information appear
while start-on. It can be used as the normal serial port after start-on.
232 Interface (J15):
Interface Pin Definition Device Node Level
UART1
1 RXD1_232
TtyS1 RS232
2 TXD1_232
UART2
3 RX2
TtyS2 RS232
4 TX2
5 GND
0V
UART3
6 RXD3_232
TtyS3 RS232
7 TXD3_232
UART4
8 RXD4_232
TtyS4 RS232
9 TXD4_232
10 GND
0V
485 Interface (J16):
Interface Pin Definition Device Node Level
UART3
1 3A
TtyS3 RS485
2 3B
UART4
3 4A
TtyS4 RS485
4 4B
2.2 USB-HOST Interface
The STAD133WT-15 has integrated 4 USB-HOST. These 4 USB
interfaces can be connected to a variety of USB peripherals, such as USB
keyboard and mouse, U disk, USB interface camera (support UVC