XR88C681CP Datasheet, PDF (52/99 Pages) Exar Corporation – CMOS DUAL CHANNEL UART (DUART)

XR88C681
D.2 Bit Rate Generator
  *0 *(  0  ''%   (( - 
+   %'(
('(  $ -    ''3 %(-  +
1 ' & %$ $ ' ('( ( %  -( -
+ 6 %   63% Please note that the BRG
will only generate these standard bit rates if the Oscillator
Circuit is running at 3.6864 MHz $$(( &"   '
''3 +E '(%  +   *0   / (%
 % %
  % ' %'   +  $(++  %% + ( %" 
 - $ +   *0  (% %'( (% $ &
%( -  '( -
N>O (%( - +  % %% + *(
%" +   *0" (% % $ (   $(%'%%( +  

'3 ' -(%% 
% ( Section D.5 '3
$(- +   *0 '('(& (% % $ ( Figure 27
5.
9:
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('(

N>O
*(  0 

 %  $ *

 N>4<O
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*

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*
Figure 27. Block Diagram of the Bit Rate Generator portion of the Timing Control Block
 
6