xr20m1280 Exar Corporation, xr20m1280 Datasheet - Page 54

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

XR20M1280
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
F
F
IGURE
IGURE
MODEM pin
G P IO n
IRQ#
IR Q #
SDA
S D A
24. M
25. GPIO P
ODEM
A D D R E S S
ADDRESS
IN
I
SLAVE
S L A V E
NPUT
I
NTERRUPT
P
IN
I
NTERRUPT
W
W
T
D2
A
A
MSR REGISTER
G P IO L V L R E G .
T
D 4
PRELIMINARY
A C K fro m sla ve
54
A
A
S
S
A D D R E S S
ADDRESS
SLAVE
S LA V E
A C K fro m sla ve
R
R
A
A
T
T
DATA
D3
D A T A
D 5
A C K fro m m a ste r
A
A
REV. P1.1.1
P