XR88C681CP Datasheet, PDF (78/99 Pages) Exar Corporation – CMOS DUAL CHANNEL UART (DUART)

XR88C681
H. SPECIAL MODES OF OPERATION
H.1.1 Receiver-Controlled RTS/CTS Handshaking
H.1 RTS/CTS Handshaking
    '  -$  % .

8 $% 3( -" %   % + $ + '  (  
$('%  (% %'( ( $%'(  ' + ( %  
    %   % ( ( ( - .

8 $% 3( - '(+('&"  % ( % 4
 '(
 $ .
 8 $% 3( -
  %(
 $ .
 8 $% 3( -
#  (% $"   '( %   ((&  ('&
-         %(( - $('
'(+('&"  (% $ %   '(  -  
 %(-  (+ (% 8 (% +L  $" (%  &" & ++'(
(  ( - '(  2% Figure 42
% %  $(- +  ! (%( -  
( +   '(
 $  ' +(-( 
'(( - ('

,
5
5
99


#,
,<

,
99

5
 %(( - ('

*
#,
5*
5*
*
,
Figure 42. Block Diagram and Timing Sequence of Two DUARTs Connected
in the Receiver-RTS Controlled Configuration
 
>=