Automatic Baud Rate Detection

(ABR).The process 

in

 which 

a

 receiving device examines the first 

character

 of an incoming message to determines 

it

 speed, 

code

 level, 

and

 stop 

bit

.Having this automatic function makes 

it

 possible to receive 

data

 from different transmitting devices operating 

at

 different speeds without having to establish 

data

 rates 

in

 advance.