XR16L651 Datasheet, PDF (47/56 Pages) Exar Corporation – 2.25V TO 5.5V UART WITH 32-BYTE FIFO

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REV. 1.3.0
XR16L651
2.25V TO 5.5V UART WITH 32-BYTE FIFO
FIGURE 21. 16 MODE (INTEL) DATA BUS WRITE TIMING USING AS#
AS#
A0-A2
CS2#
CS0 or CS1
IOW#
IOW
D0-D7
T_AS1
T_CS1
T_ASW
T_AH1
Valid
Address
T_CS
T_CSH
T_WR1
T_WR
T_DS2
Valid
Data
T_AS2
T_CS1
T_DY
T_DH2
Note: Only one chipselect and one write strobe should be used.
FIGURE 22. 68 MODE (MOTOROLA) DATA BUS READ TIMING
T_ASW
T_AH2
Valid
Address
T_CS
T_CSH
T_WR1
T_WR
T_DS2
Valid
Data
T_DH2
A0-A2
CS#
R/W#
D0-D7
T_ADS
Valid
Address
T_CSL
T_ADH
T_RWS
T_RDA
T_CSD
T_RWH
Valid
Data
T_RDH
Valid
Address
Valid
Data
68Read
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