XR16C864 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XR16C864' PDF : 51 Pages View PDF
XR16C864
REV. 2.2.0
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
FIGURE 14. MODEM INPUT/OUTPUT TIMING FOR CHANNELS A-D
IO W #
IO W
RTS#
DTR#
A c tive
C h a n g e o f s ta te
T W DO
C h a n g e o f s ta te
CD#
CTS#
DSR#
IN T
IO R #
R I#
TMOD
C hang e of state
A c tive
A c tiv e
C h a n g e o f s ta te
T RSI
T MOD
A c tiv e
A c tive
A c tiv e
A c tiv e
TMOD
C h a n g e o f s ta te
FIGURE 15. 16 MODE (INTEL) DATA BUS READ TIMING FOR CHANNELS A-D
A0-A7
TAS
CS#
Valid Address
TCS
TRD
IOR#
D0-D7
TRDV
Valid Data
TAH
TDY
TDD
Valid Address
TAS
TCS
TAH
TRD
TRDV
TDD
Valid Data
RDTm
45
Share Link: 
