XR20V2172 Datasheet, PDF (47/51 Pages) Exar Corporation – TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER

REV. P1.0.1
PRELIMINARY
XR20V2172
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
FIGURE 25. 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 26. 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
47