XR68C681J View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR68C681J

CMOS Dual Channel UART(DUART)

Exar Corporation 

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XR68C681

Transmitter

TX

Receiver

RX

TX Clock

RX Clock

Figure 10. Example of a Serial Data Transmission System

: % +  %%     '( (% ''3$ & 

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

$     '( (% & %(-   %( $ '

 ( ($ Figure 11 %%   %% +  (%

 

Figure 11. Receiver (1X) Sampling, if the RX clock is slightly faster

than the TX clock.

Figure 11 % %      % (% (   

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

' -(- #  (% '%"   '( (% %(- '

%( $ (" ( $ ( (   ( ($" (

' %''%%( $ (  (%   (% 3 %

'( $(+ #+   (%  ''( + '( $(+"

  (  & % (   %(%%( $

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

Figure 12.

 

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