XR20M1280 Datasheet, PDF (57/63 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 30. SPI WRITE MCR TO DTR OUTPUT SWITCH
CS#
SCLK
SI
GPIOx
R/W A3 A2 A1 A0 CH1 CH0 X
D7 D6 D5 D4 D3 D2 D1 D0
TD9
FIGURE 31. SPI WRITE MCR TO DTR OUTPUT SWITCH
CS#
SCLK
SI
DTR#
(GPIO5)
R/W A3 A2 A1 A0 CH1 CH0 X
D7 D6 D5 D4 D3 D2 D1 D0
TD10
57