XR82C684J-F View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR82C684J-F

CMOS Quad Channel UART (QUART)

Exar Corporation 

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XR82C684

D.2 Bit Rate Generator

5' *   3 )2% )(  2 % ''%  

((,  *   %'( 
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' '6 %(, *  44 '  & %  ' ('(

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note that the BRGs will only generate these standard bit

rates if the Oscillator Circuit is running at 3.6864 MHz (for

the bit rates presented in Table 15) or running at 7.3728

MHz (for the bit rates presented in Table 15A). The actual

clock frequencies output from the BRGs are at 16 times

these rates.

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

Channels A and B

 

9B

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