XR68C681J-F Datasheet, PDF (13/75 Pages) Exar Corporation – CMOS Dual Channel UART(DUART)

XR68C681
Address
(HEX)

Read Mode Registers
Register Name
Symbol
$ -(%" '  
 " 

% -(%" '  


%3$ #  %
-(%
1
! 9$( - -(%"
'  
=
#  ,
 -
-(%
6
#  % -(%
/

 .( 
*& -(%
@

 .( :
*& -(%
<
$ -(%" '   *

% -(%" '  
*

22;2

#
9
#,

#



:
*" *
*
*
! 9$( - -(%"
'   *


#  ;' -(%

#  ,
9*
#;
#,
2

 .(

 $


 .(

 $





Write Mode Registers
Register Name
Symbol
$ -(%"
'  

'3 ' -(%"
'  

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




9


#  %3 -(%

 .( 
*& -(%

 .( :
*& -(%
$ -(%" '   *

'3 ' -(%"
'   *

 $ -(%"
'   *
! 9$( - -(%"
'   *
#  ;' -(%
 ,
 +(-(
-(% ,  ,@
  , *(%

 $

  , *(% 

 $
#



:
*" *

*

*
9*
#;
,

,*


,*

Table 1. DUART Port And Register Addressing
Note:
The shaded blocks are not Read/Write registers but rather, “Address-Triggered” Commands.
 
1