XR68C681 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR68C681

CMOS Dual Channel UART(DUART)

Exar Corporation 

Prev 41 42 43 44 45 46 47 48 49 50 Next

XR68C681

MR1n[2] - Parity Type Select

 (% ( %'%   2;28 (& (+ HA#9 ,#E

2I (% -$ $   % +   +'$ (&

( (+   H 
2 ,#EI $ (% -$ #  

($ $ ( %'%   % +   . +- (

 (% ( %  ++' (+ H8 ,#EI (% %'$ (

M=41N

MR1n[1:0] - Bits per Character Select

'%    + (%   %($ $ '($

(   $ +($ +   ' '  (% $%  ('$

" ,#E" $ , (%

Mode Register 2 (Channels A and B)

 + ' '  (% ''%%$     ' .%

 ,( (%  "  (' ''% + &

''%%    ' .%  -(% %C $%

 (%   $%  ' -   '% +   

(

MR2n[7:6] - Channel Mode Select

2'
 '  (  + + $%

 (- M@4/N J  '+(-%   '  

 (    $  #  (% $"   

'( $ %(  ($$&

Figure 19 %%  $(- $('(- 

$ (

5
5

#'(- 5

( 

'(  (+ -(%

%(  (+ -(% 5

-(- (



'( 9$(-

-(%

%( 9$(-

-(%

<

 $ %

  $ &  
,

<

 $ %

, $ +  
,

Figure 19. A Block Diagram Depicting Normal Mode Operation

 

=<

Share Link: