XR82C684CJ-F Datasheet, PDF (78/107 Pages) Exar Corporation – CMOS Quad Channel UART(QUART)

XR82C684
 %(
 '6 *  (( , ) '6
8

 %(  (* ,(%
  ! )%7
+ ! * 
 
+
8!
, ( ,
( !
 %( ; ( , ,(%
Figure 40. A Simplified Drawing Depicting the Transmit Shift Register and the Transmit Holding Register
E     %( (% (  ( '(#   8!
 *    (' '   3(  ' (  %&
6( ,    ,(' / (, 1 ; 3# C% (    
 %(%%( *  ' '#    %( %  
'( & , ( ,  /1 (    ( (%
%('&   8!   ,,( , / 31 *   ( ( #
*  3( ,  ( (     + ( *   '( ,
' ' $(& *  %(%%( *   
 %( $
   )(
8!



(#   % %(, (*('  ( *   ' ' 3(  % 
*(%# *  3 &  ,%%(&   %(, (*('  (% $*  
'  ('(   '  '% *  (#    %( 3(
%   /(&1 ( 3    % %(, (*('  ( *  
' '     + ( Figure 41 % %  
3*  *  *    %( 8!   $
 (% '%#    %( (% %  9!_.# 3( 0:   ' 
0 (%  ' '# : (&#   )(





 )(
  )(
Figure 41. The Output Waveform of the Transmitter While Sending 5D (8-N-1 Protocol)
    '   ,  ,   $ 
I%   
+ & %( , $PQ# $P@Q# $PQ
  $P@Q * 
 % # )#
#   ! %'(& $
 (% '%#     3  ,   $ 
I%  &(   %( ;     &
* ' '%  
+ ' %('  (% (  I%
& 3(( ,  ' '    & ;
 
B0