XR68C681 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR68C681

CMOS Dual Channel UART(DUART)

Exar Corporation 

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XR68C681

Receiver Errors

#+   '( $%  %  H3I"    %$

( +   , ("  (- 2  2 (% +--$ &

%(-" M/N J #+"  ' '( +  

' '"   %%C (& ' '3 (% (''"  ,(&

2 ,2 (% +--$ & %(- M6N J  #+   9 %

+" $   ' ' !(%$ (   K $ (+ 

$ %    (   '%$(- 5 (K

    ' ' (    (  (" $ 

H'(  2I 2 '$(( (  +--$ (

  % -(% M=N J   (%  

(%& %% (  %% + $

(& (+   5 ( (% $    %' '$(( +

 ( ' ' ($" $  , ( % $'$

, ( %(- %$ (  %'K  '($

*3 '$(( * (% %$ A   (% '$(( (%

$'$ %  (-% 

   H'($ *3I '$(( (% +--$ (  

% -(% M@N J 

   H*3I ' ' (% $$ (   9

9"  +  $ (% '($  $$ (  

9 (   5 ( %    H3I

'$((

1   '%$(- H *3I ( (%

C%$ (+ -$ $ +--$ (   (

%% -(%

'   5 ( %    H3I '$(("

%%C ' '% (  $$ (   9" $

  '%$(- H *3I ( '$(( (

' -(  C%$ (+ -$ $ +--$ (

  ( %% -(%

   '  -$  -  (

C%   
, (+  5E '( $&  

::  #   '$(( !(%% + (  ' 

5E '$(( !(%%    %  ' ' +

$ !(%% ( (   9" $ (% (& ((-  

H$I $ $ &  
,   :: '$((

!(%%     9 (% '& + $ ' ''

&  ' '% +    (  
, % $

 H$I   #    % ' %'   (

C%  '' $  (        5E 

:: '$(( (   '  $ -(%%  %

(%  $ & %(- #MN $ #M6N +

' % $ *" %'(&

2' '  (% C($ ( %   -(%%

   %$  ($ ' $ ((- +  %

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

( %'(% +   $ %  9"  $($

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

%$ (   +(- %'(

G.3 Mode Registers, MR1n and MR2n

  $ -(%%"    %  %'(+&   '

%   .%  $ (3   '    

 % -(%% %    %  '+(-  

 ' %  -- ( $ $% 3(-

' (C%   (% ( ( ' +  % -(%% 

$(%'%%$ 

Bit 7

Rx RTS

Control

 J 8

 J E%

Bit 6

Rx Interrupt

Select

Bit 5

Error Mode

Select

J!E J
'

J ::

J *'3

Bit 4

Bit 3

Parity Mode

Select

 J A( ,(&

 J ' ,(&

 J 8 ,(&

 J ( $

Bit 2

Parity Type

 J 2

 J $$

Bit 1

Bit 0

Number of Bits

per Character

 J 6

 J /

 J @

 J <

Table 17. The Bit Format for Mode Registers MR1A and MR1B

 

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