Boardcon Idea6410 Manual de usuario Pagina 16

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IDEA6410 Hardware Reference Guide
16
3.4. Serial Interface
There are four Serial interfaces, UART0, UART1 is 5 lines, UART2, UART3 is 3 lines.
The board uses three pieces SP3232 serial interface chip to change the four serial
interfaces to RS232 level. The user can use switch SW2 to change the output of serial
interface into RS232 or TTL level. There is one piece of standard DB9 port at connector J4,
which is specially design for debugging and printing debugging message. Below picture
shows circuit of UART0
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