XR16L2450_05 Datasheet, PDF (23/30 Pages) Exar Corporation – 2.25V TO 5.5V DUART

xr
REV. 1.1.1
FIGURE 8. CLOCK TIMING
EXTERNAL
CLOCK
CLK
CLK
OSC
FIGURE 9. MODEM INPUT/OUTPUT TIMING FOR CHANNELS A & B
IOW #
RTS#
DTR#
Active
Change of state
T _{W DO}
Change of state
XR16L2450
2.25V TO 5.5V DUART
CD#
CTS#
DSR#
INT
IOR#
RI#
T_MOD
Change of state
Change of state
Active
Active
T_MOD
T_RSI
Active
Active
Active
Active
T_MOD
Change of state
23