XR20M1280L32-0B Datasheet, PDF (55/63 Pages) Exar Corporation – I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS

REV. 1.0.0
XR20M1280
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
FIGURE 26. RECEIVE INTERRUPT
Start bit
Stop bit
Next
start
bit
RX
D0
D1
D2
D3
D4
D5
D6
D7
T_D6
IRQ#
FIGURE 27. RECEIVE INTERRUPT CLEAR
SDA
SLAVE
ADDRESS
WA
RHR
AS
SLAVE
ADDRESS
RA
DATA
AP
IRQ#
TD7
FIGURE 28. TRANSMIT INTERRUPT CLEAR
SDA
SLAVE
ADDRESS
W A THR REGISTER A
DATA
A
DATA
A
IRQ#
TD8
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