XR28V382IL32-0A Datasheet, PDF (16/39 Pages) Exar Corporation – 3.3V DUAL LPC UART WITH 128-BYTE FIFO

XR28V382
3.3V DUAL LPC UART WITH 128-BYTE FIFO
REV. 1.0.1
1.5 Serial Transceiver Interface
The V382 is typically used with RS-232, RS-485 and IR transceivers. The following figure shows typical
connections from the UART to the different transceivers. For more information on RS-232 and RS-485/422
transceivers, go to www.exar.com or send an e-mail to [e-mail].
FIGURE 9. XR28V382 TYPICAL SERIAL INTERFACE CONNECTIONS
VCC
UART
TX
RX
DTR#
RTS#
CTS#
DSR#
CD#
R I#
GND
VCC
R S-232
T ransceiver
T1 IN
R1OUT
T 2 IN
T 3 IN
R2OUT
R3OUT
R4OUT
R5OUT
GND
R S -232 Fu ll-M od em S erial Interface
VCC
UART
TX
RX
RTS#
DTR#
CTS#
DSR#
CD#
RI #
VCC
NC
VCC
NC
RS-485
Transceiver _TX+
DI
Full-duplex
RO
TX-
VCC
RX+
DE
RX-
RE#
GND
RS-485 Full-Duplex Serial Interface
16