<mikeotp@gmail.com> wrote in message 
news:036d3717-0bce-4f26-bad2-6770882e9312@e25g2000prg.googlegroups.com...
> regards:
>
>
>   If my system is like the followings:
>   the system architecture is:
>   http://0rz.tw/d83qm
>
>   then do I need any control signal to control the "TX" "RX"?
>
>   any positive suggestion is welcome.
>   best regards to you all
>
>   mike
That will work fine. Connect TX enable and RX enable to the appropriate 
levels so they are permanently enabled. 

regards:


   If my system is like the followings:
   the system architecture is:
   http://0rz.tw/d83qm

   then do I need any control signal to control the "TX" "RX"?

   any positive suggestion is welcome.
   best regards to you all

   mike