XR82C684CJ View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR82C684CJ

CMOS Quad Channel UART (QUART)

Exar Corporation 

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XR82C684


PB7@Q

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Figure 31A. Block Diagram of the Bit Rate Generator portion of the Timing Control Block, for

Channels C and D

D.3 Counter/Timers

  ((,
  ) '6 % ' (% 3 . (

-(% 
-D 
-D 5'
- (% 

 , . (  3'  3 (' ' %  *

% ((, % '% % (% ( Figure 32 

Figure 32A %%   '6 (, *   '('(&

% (,
-D 
-D# %'(&  

%'( *  % ((, % '% * 
-(% D

 D '   & 3((,    (  


P.7@Q  
P.7@Q# %'(& Please see

 4 and  4 for the relationship between the

Counter/Timer mode, the Timing Source and ACR[6:4]

for Counter/Timers #1 and #2, respectively.  
-

# *   
-%# (% (   
 '6 '

,(%% *  % %   , (  , 

*   *  %(%  '(% Please note that

the QUARTs, packaged in the 44 pin PLCC have limited

options in regards to Timing Source, as depicted in

Table 13 and Table 13A.

 

90

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