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II
SO Sl
S2
S3 S4 S5 SW SW S6 S7
SO Sl S2 S3 S4 S5 SW SW S6 S7
ClK
(INPUTI
Al-A31
(OUTPUTI
BGACK
(OUTPUTI
AS
(OUTPUTI
R/W
(OUTPUTI
00-015
(INPUn
OTACK
(INPUn
RTY ON
BECO-BEC2
(lNPUn
OTACK
(lNPUTI
RTY ON
i
BECO-BEC2
(INPUTI
CASE ONE: If DTACK satisfies 1 then 48 and 58 are required. If DTACK is active but does not satisfy 1 then 49 and 57 are required.
CASE TWO: If DTACK is not active then 59 is required for the exception active set-up time. Parameter 61 is always required for the exception inactive
set-up time.
MOTOROLA
R.1n
Figure 8·7.TBC Read Cycle with RETRY
MC68824 USER'S MANUAL
CASE
ONE
CASE
TWO
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