XRT72L50 Datasheet, PDF (47/471 Pages) Exar Corporation – SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

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XRT72L50
SINGLE CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. 1.2.1
FIGURE 19. MICROPROCESSOR INTERFACE TIMING - MOTOROLA-TYPE PROGRAMMED I/O READ OPERATION
A[8:0]
CS
AS
DS
RW
D[7:0]
Address Valid
t64
t68
t65
t70
t69
Data Valid
t66
t71
DTACK
FIGURE 20. MICROPROCESSOR INTERFACE TIMING - MOTOROLA-TYPE PROGRAMMED I/O WRITE OPERATION
A[8:0]
CS
AS
DS
RW
D[7:0]
DTACK
Valid Address
t64
t68
t65
t70
t67
t69
Data to be W ritten
t66
t71
FIGURE 21. MICROPROCESSOR INTERFACE TIMING - RESET PULSE WIDTH
t90
Reset
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