XR68C681CJ EXAR [Exar Corporation], XR68C681CJ Datasheet - Page 51
XR68C681CJ
Manufacturer Part Number
XR68C681CJ
Description
CMOS Dual Channel UART (DUART)
Manufacturer
EXAR [Exar Corporation]
Datasheet
1.XR68C681CJ.pdf
(75 pages)
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Remote Loopback Mode
MR2n[5] - Transmitter Request-to-Send Control
Figure 22. A Block Diagram Depicting “Remote Loopback Mode” Operation
Note: The CPU has no access to the Serial Data during Remote Loopback Mode.
Figure 22
Figure 26
MR2n[4] - Clear to Send Control
XR68C681
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