UART receiver loopback characters VHDL

Hi Tex,

Pins that should be assgined:

I_clk

I_reset

I_txData (If you're getting the data externally from the board, then needed. Otherwise, not needed)

O_tx, I_rx (Needed as to make loopback connection)

O_rxData (If you're showing the received data externally to the board like LED or Monitor, then needed. Otherwise, not needed)

For this I_txSig, you can comment out this input port and the rest in the code if you're not using it.

For I_rxCont and I_clk_baud_count, you can declare them as signal instead of input port so that not need to make any pin assignment. For example like below:

signal I_clk_baud_count : STD_LOGIC_VECTOR(15 downto 0) := X"01B2"; -- 115200bps @ 50Mhz Clk
signal I_rxCont : STD_LOGIC := '1';

Pins that not needed to be assigned (monitor and debug purpose):

If you want to assign, you can assign to for example like LED respectively.

O_txRdy

O_rxSig

O_rxFrameError

D_rxClk

D_rxState

D_txClk

D_txState

Thanks,

Best Regards,

Sheng