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XR20V2172IL64 Datasheet(PDF) 8 Page - Exar Corporation

Part # XR20V2172IL64
Description  TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
Download  51 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XR20V2172IL64 Datasheet(HTML) 8 Page - Exar Corporation

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FIGURE 6. I C DATA FORMATS
SW
A
A
A
P
SLAVE
ADDRESS
DATA
DATA
Data transferred (n bytes + acknowledge)
Master write:
START condition
write
acknowledge
acknowledge
acknowledge
STOP condition
SR
A
A
NA
P
SLAVE
ADDRESS
DATA
DATA
Data transferred (n bytes + acknowledge)
Master read:
START condition
read
acknowledge
acknowledge
Not acknowledge
STOP condition
SR/W A
A
SLAVE
ADDRESS
R/W
SLAVE
ADDRESS
DATA
Data transferred (n bytes +
acknowledge)
Combined
formats:
START condition
Read or
write
acknowledge
acknowledge
Repeated
START condition
Read or
write
Sr
ADATA
A
P
Data transferred (n bytes +
acknowledge)
acknowledge
acknowledge
STOP condition
Direction of transfer may
change at this point
XR20V2172
PRELIMINARY
8
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
REV. P1.0.1
2


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