THVD1520: Automatic Direction Control Circuit

Part Number: THVD1520
Other Parts Discussed in Thread: THVD1426,

Tool/software:

Dear Team,

Kindly recommend a circuit to enable automatic direction switching for Transmit and receive.

Also, do I need to pull up the Ro pin, and the DE/RE pin be pulled down with a resistor?

Kindly explain.

Thank you.

Regards,

Vignesh