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Altera_Forum
Honored Contributor
17 years agoCycloneiii Flip Flop mistery
Hello! I have a cycloneiii starterkit board from altera and terasic. This little one has a RS232 interface in the PIN_E18 and PIN_H17 , RXD and TXD respectively. I test the pins by making a loo...
Altera_Forum
Honored Contributor
17 years agoFirst what is your clk speed?
second, do you do physical loop back or just inside fpga. How do you read back Tx pin (is it bidirectional)?