XR16L651 Datasheet, PDF (46/56 Pages) Exar Corporation – 2.25V TO 5.5V UART WITH 32-BYTE FIFO

XR16L651
2.25V TO 5.5V UART WITH 32-BYTE FIFO
FIGURE 19. 16 MODE (INTEL) DATA BUS WRITE TIMING WITH AS# TIED TO GND
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REV. 1.3.0
A0-
A2
CS2#
CS1
CS0
IOW#
IOW
D0-D7
Valid
Address
T_AS
T_CS
T_WR
T_DS1
Valid
Data
T_AH
T_AS
T_DY
T_DH1
Valid
Address
T_CS
T_WR
T_DS1
Valid
Data
T_AH
T_DH1
Note: Only one chipselect and one write strobe should be used.
FIGURE 20. 16 MODE (INTEL) DATA BUS READ TIMING USING AS#
AS#
T_AS1
A0-A2
CS2#
T_CS1
CS0 or CS1
IOR#
IOR
DDIS#
T_ASW
T_AH1
Valid
Address
T_CS
T_CSH
T_RD1
T_RD
T_DIS
D0-D7
T_RDV
Valid
Data
T_AS2
T_CS2
T_DY
T_ASW
T_AH2
Valid
Address
T_CS
T_CSH
T_RD2
T_RD
T_DIS
T_DD
T_RDV
T_DD
Valid
Data
Note: Only one chipselect and one read strobe should be used.
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