XR72L52 Datasheet, PDF (52/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L52
REV. 1.0.1
xr
TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
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
36