XR20M1172G28-0B Datasheet, PDF (48/55 Pages) Exar Corporation – TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO

XR20M1172
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO
REV. 1.2.0
FIGURE 26. RECEIVE INTERRUPT
Start bit
Stop bit
Next
start
bit
RX
D0
D1
D2
D3
D4
D5
D6
D7
TD6
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
48