XR82C684CJ View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR82C684CJ

CMOS Quad Channel UART (QUART)

Exar Corporation 

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XR82C684

I. COMMENTS ABOUT THE XR82C684 IN 44 PIN

PLCC

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J. PROGRAMMING

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Bit 7

Rx RTS Con-

trol

L:

 L H%

Bit 6

Rx Int Select

Bit 5

Error Mode

L8!H

L<<

L


L ) '6

Bit 4

Bit 3

Parity Mode

Select

 L E( +(&

 L  ' +(&

 L : +(&

 L (!   

Bit 2

Parity

Select

 L 5

 L 

Table 28. Mode Registers 1: MR1A, MR1B, MR1C, MR1D

Bit 1

Bit 0

Number of Bits/Char.

 L 9

 L .

 L B

 L 0

Bit 7

Bit 6

Channel Mode

 L : 

 L  5'

 L < ' < 

 L   < 

Bit 5

Tx RTS

Control

L:

 L H%

Bit 4

CTS Enable

Tx

L:

 L H%

Bit 3

Bit 2

Bit 1

Stop Bit Length

Bit 0

 L 9.4

 L .9

 L .00

4 L B9

@ L 04

9 L 0B9

. L 40

B L 

0 L 9.4

 L .9

 L .00

) L B9

L 04

! L 0B9

5 L 40

 L 

Table 29. Mode Register 2: MR2A, MR2B, MR2C, MR2D

Bit 7

 

Bit 6

Bit 5

Receiver Clock Select

 Table 6

Bit 4

Bit 3

Bit 2

Bit 1

Transmitter Clock Select

 Table 6

Table 30. Clock Select Registers: CSRA, CSRB, CSRC, CSRD

9

Bit 0

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