XR82C684J/44-F Exar Corporation, XR82C684J/44-F Datasheet - Page 67
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XR82C684J/44-F
Manufacturer Part Number
XR82C684J/44-F
Description
Quad Channel UART
Manufacturer
Exar Corporation
Datasheet
1.XR82C684CJ44-F.pdf
(107 pages)
Specifications of XR82C684J/44-F
Features
*
Number Of Channels
4, QUART
Fifo's
3 Byte
Voltage - Supply
5V
Mounting Type
Surface Mount
Package / Case
44-LCC (J-Lead)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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XR82C684J/44-F
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OPNEXT
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Manufacturer:
Exar Corporation
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Example B: Programming the Bit Rate via the
Counter/Timer
bit rate is not offered by the BRG. In this case the user can
do the following.
Please note that when the QUART is programmed in this
configuration, the C/T output represents a 16X over
sample of the Transmitted and Received data. Therefore,
the chip circuitry will divide the 1 MHz square wave by 16,
just like for clock signals originating from the BRG.
Please note that this particular
Table 14
Table 15
Thus: Bit Rate = 1 MHz/16 = 62.5 kbps.
Example C: Using the External Input Ports
Note: x = don’t care
Please note that if the user were to apply this example,
he/she would be responsible for ensuring that the
incoming serial data stream is synchronous with the 1
MHz (1X) clock signal; in order to minimize bit errors.
XR82C684
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