HELP, How to Output 8 bit data(11001100) from FPGA to one of IO port.

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How's using the transceiver the best option?

It's a massively complicated option if all he has to do is shift an 8 bit pattern out on a pin.

To the OP, use a shift register!

Nial.

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of course, you are right if this is just a very small project.

But to certain extent, it is great to learn using transceiver in FPGA.

Eventually, many serial data communication will require to use transceiver.