xr20m1280 Exar Corporation, xr20m1280 Datasheet - Page 55

• Manufacturer Part Number: xr20m1280
• Description: I2c/spi Uart With 128-byte Fifo And Integrated Level Shifters
• Manufacturer: Exar Corporation

REV. P1.1.1
F
F
F
IGURE
IGURE
IGURE
RX
IRQ#
IRQ#
SDA
IRQ#
SDA
26. R
27. R
28. T
RANSMIT
ECEIVE
ECEIVE
ADDRESS
SLAVE
Start bit
ADDRESS
I
I
SLAVE
NTERRUPT
NTERRUPT
I
NTERRUPT
D0
W
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
W
C
C
A
LEAR
LEAR
D1
A
THR REGISTER
RHR
D2
PRELIMINARY
D3
A
A
55
S
D4
DATA
ADDRESS
SLAVE
D5
A
D6
R
DATA
A
T
D7
D7
DATA
Stop bit
T
A
D8
XR20M1280
T
Next
start
D6
bit
A
P