XR16V2551 Datasheet, PDF (41/51 Pages) Exar Corporation – HIGH PERFORMANCE DUART WITH 16-BYTE FIFO AND POWERSAVE FEATURE

PRELIMINARY
XR16V2551
REV. P1.0.0
HIGH PERFORMANCE DUART WITH 16-BYTE FIFO AND POWERSAVE FEATURE
FIGURE 14. MODEM INPUT/OUTPUT TIMING FOR CHANNELS A & B
IOW #
RTS#
DTR#
Active
Change of state
T _{W DO}
Change of state
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
FIGURE 15. 16 MODE (INTEL) DATA BUS READ TIMING
A0-A2
T_AS
CSA#/
CSB#
IOR#
Valid Address
T_CS
T_RD
D0-D7
T_RDV
Valid Data
T_AH
T_DY
T_DD
Valid Address
T_AS
T_CS
T_AH
T_RD
T_RDV
T_DD
Valid Data
RDTm
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