XR82C684CJ-F Datasheet, PDF (70/107 Pages) Exar Corporation – CMOS Quad Channel UART(QUART)

XR82C684
Input Port
$+0
$+
$+
$+
$+
$+4
$+@
$+9
Alternate Function(s)


7
    
 (  * 
 

Note: This input is Active Low for the CTS func-
tion.

!7
    
 (  * 
  !
: 7  (% (  (% '( < 3 *   
 * '
( 

G587
 -( D 5" 
 '6 $ 
8

G587 5" 
 '6 (  *   %(

 

8

G587 5" 
 '6 (  *  '(

 

8
!G587 5" 
 '6 (  *   %(

  !
8
!G587 5" 
 '6 (  *  '(

  !
: 
Approach to Program Alternate Functions
$+0 '   ,  * '( %   

(  &
%( , 
P@Q L      ( (%'%%(  (%
* '( # % % Section G.3
$+ '   ,  * '( %   
! (  &
%( , !P@Q L      ( (%'%%(  (%
* '( # % % Section G.3
$+ '   ,  * '( %   "  ' '6
(  * 
 -( D & %( , 
P.7@Q L P# # Q
     ( (%'%%( (    **' *  (% '(
% % Section D.2
$+ '   ,  * '( %   "  ' '6
(  *     %( *
 
& %( ,

P47Q
L P# # # Q (    %  .8
 '6# 


P47Q L P# # # Q (     %  8

 '6
$+ '   ,  * '( %   "  ' '6
(  *    '( *
  ) & %( ,
)PB7@Q L
P# # # Q (    %  .8
 '6# 
)PB7@Q
L P# # # Q (     %  8
 '6
$+4 '   ,  * '( %   "  ' '6
(  *     %( *
  ! & %( ,
!P47Q
L P# # # Q (    %  .8
 '6# 

!P47Q L P# # # Q (     %  8

 '6
$+@ '   ,  * '( %   "  ' '6
(  *    '( *
  ! & %( ,
!PB7@Q L
P# # # Q (    %  .8
 '6# 
!PB7@Q
L P# # # Q (     %  8
 '6
:-
Note: “Shaded” Input Port pin and Alternate Functions are only available in the 68 Pin PLCC package.
Table 17. Listing of Alternate Function for the Input Port
E.2 Input Port Configuration Registers (IPCR1 and
IPCR2)

 , * % ' %   ( *  (  ( % $+
  , $+4   $+0   , $+  % ( % 
% &   40@ 6;J  *   )2 @ 6% "
.  (,   3   3  (,  %((   % ( 
%( ,  % 3 ' '6 ( %  "(& 9% 3(
,      ' % ( , ( (    (
Bit 7
! $+4
L:
 L H%
Bit 6
! $+
L:
 L H%
Bit 5
! $+
L:
 L H%
Bit 4
! $+
L:
 L H%
(    '  , ,(% $+
  $+
 3(  %#
 , ( &  % &  '  , * % % %  %
9%   ( *  * ' *   $+
% *  3%  
%% (% (    ( *   $+
 $+
PB7@Q 
$+
PB7@Q  ' 3    ,(% (%  &  

+   & '  , * % ' %   , 
,   (  (   /$  + 
 , * 1
( 
Bit 3
$+4
L< 3
 L ;(,
Bit 2
$+
L< 3
 L ;(,
Bit 1
$+
L< 3
 L ;(,
Bit 0
$+
L< 3
 L ;(,
 
Table 18. Input Port Configuration Register 1 - IPCR1
B