Tbc Read Cycle With Bus Error; Tbc Read Cycle With Retry - Motorola MC68824 User Manual

CLK
(INPUT)
Al·A31
(OUTPUT)
FCO·FC3
(OUTPUT)
AS
(OUTPUT)
UoS. LOS
(OUTPUT)
R/W
(OUTPUT)
00·015
(INPUT)
oTACK
(INPUT)
BERR ON
BECO·BEC2
!INPUT)
BGACK
(OUTPUT)
SO SI S2 S3 S4 S5 S6 S7 S8 S9
~------------~)~----
~
--------------~)~----­
__________
~f'-----
\
\ ~
________
~f'-----
---1
(
'---__ ----J)>------
\ --------~I
------------------~~
SO SI S2 S3 S4 S5 S6 S7 S8 S9
<
>
\
\
EARLY ASYNCHRONOUS EXCEPTION LATE SYNCHRONOUS EXCEPTION
Figure 6-8. TBC Read Cycle with Bus Error
ClK
!INPUT)
BGACK
SO SI S2 S3 S4 S5 S6 S7 S8 S9 SO SI S2 S3 S4 S5 S6 S7
(OUTPUT) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Al·A31
(OUTPUT)
FCO·FC3
(OUTPUT)
~~------------------------------------------
~~------------------------------------------
AS - - - - ,
r--------.,
(OUTPUT) \\,., _ _ _ _ _ _ _
1
UDS, lOS \
I
(OUTPUT) . ,
R/W
I
(OUTPUT) - - '
00·015
!INPUT)
oTACK - - - - - . , \
1
(INPUT) \-. _ _ _ _ _ _ _ _ ,
RTY ON - - - - - - _ - , .
BECO·BEC2 \
I
(INPUT)
\ - . . . - - - - 1
Figure 6-9. TBC Read Cycle with RETRY
MC68824 USER'S MANUAL
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MOTOROLA
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