XR16V654_0709 Datasheet, PDF (25/58 Pages) Exar Corporation – 2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO

REV. 1.0.2
XR16V654/654D
2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO
FIGURE 14. INTERNAL LOOP BACK IN CHANNEL A AND B
Transmit Shift Register
(THR/FIFO)
VCC
MCR bit-4=1
Receive Shift Register
(RHR/FIFO)
VCC
RTS#
CTS#
VCC
DTR#
DSR#
RI#
CD#
OP1#
OP2#
TX A-D
RX A-D
RTS# A-D
CTS# A-D
DTR# A-D
DSR# A-D
RI# A-D
CD# A-D
25