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Howto : Adding a UART and connecting to a PC RS232C

The SUZAKU Hardware Manual includes an example of adding a UART (Section 9, Building a FPGA project, from page 30). In this example, as the UART is assigned external I/O pins and therefore has a +3.3V input/output level, it cannot be used with PC type RS232Cs. If a PC RS232C is directly connected, it may damage the SUZAKU. In order to connect to a PC RS232C, please use the following as reference.