XR16C850_05 Datasheet, PDF (45/56 Pages) Exar Corporation – 2.97V TO 5.5V UART WITH 128-BYTE FIFO

xr
REV. 2.3.1
FIGURE 17. CLOCK TIMING
EXTERNAL
CLOCK
CLK
CLK
OSC
XR16C850
2.97V TO 5.5V UART WITH 128-BYTE FIFO
FIGURE 18. MODEM INPUT/OUTPUT TIMING
IOW #
IOW
RTS#
DTR#
Active
TW DO
Change of state
Change of state
CD#
CTS#
DSR#
INT
IOR#
IOR
RI#
Change of state
Change of state
TMOD
Active
TMOD
TRSI
Active
Active
Active
Active
Active
TMOD
Change of state
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