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XR16L2750 Datasheet, PDF (40/49 Pages) Exar Corporation – 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
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XR16L2750
2.25V TO 5.5V DUART WITH 64-BYTE FIFO
REV. 1.0.0
FIGURE 15. MODEM INPUT/OUTPUT TIMING FOR CHANNELS A & B
IOW #
RTS#
DTR#
Active
Change of state
TWDO
Change of state
CD#
CTS#
DSR#
INT
IOR#
RI#
TMOD
Change of state
Change of state
Active
Active
TMOD
TRSI
Active
Active
Active
Active
TMOD
Change of state
FIGURE 16. DATA BUS READ TIMING
A0-A2
TAS
CSA#/
CSB#
IOR#
Valid Address
TCS
TRD
D0-D7
TRDV
Valid Data
TAH
TDY
TDD
Valid Address
TAS
TCS
TAH
TRD
TRDV
TDD
Valid Data
RDTm
40