我希望在p1010rdb上模拟出rs422，请问我应该采取什么方案。
The question is not fully clear.
Please restate it in English.
I want to know if I can simulate the RS422 in p1010rdb.
My doubt is about the word "simulate" specifically.
What exactly do you mean?
I mean that there is no rs422 on p1010rdb. I want to know if I can realize it.
It is possible to perform a wire rework to connect an RS-422 driver like UA9638C-EP:
http://www.ti.com/lit/ds/symlink/ua9638c-ep.pdf
