UART duplex

Hi all,

has anyone of you worked on UART? I'd like to know if the actual UART ports
on mini2440 could be switched to half duplex instead of full duplex.

I'm sure they can't, so in a second time, I'd like to know if you guys know
a way to efficiently use them in half duplex.

The goal is to control a Dynamixel AX12+ on one of the COM port. I'v read
the actuator documentation and there's a schema in it, showing how connect
a AX12+ to a full duplex, but I don't know how where I can plug the
direction port on my mini2440 plate (maybe on a GPIO, but is it fast
enought ?)

EDIT : thanks a lot : )

I want to know if the uart in s3c6410 is full duplex or half duplex. I have
searched several articles, but in vain. Please let me know. Thanks in
advance.