XRT72L54 Datasheet, PDF (62/484 Pages) Exar Corporation – FOUR CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L54
FOUR CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.2
áç
PRELIMINARY
FIGURE 21. MICROPROCESSOR INTERFACE TIMING - MOTOROLA TYPE PROGRAMMED I/O READ OPERATION
t₇₈
ALE_AS
A(10:0)
Address of Target Register
CS
D(7:0)
Not Valid
Valid Data
RD_DS
WR_R/W
RDY_DTCK
t₇₉
t₈₀
FIGURE 22. MICROPROCESSOR INTERFACE TIMING - MOTOROLA TYPE PROGRAMMED I/O WRITE OPERATION
t₇₈
ALE_AS
A(10:0)
Address of Target Register
CS
D(7:0)
RD_DS
WR_R/W
RDY_DTCK
Data to be Written
t₈₁
t₈₂
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