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RTI-25
DMARQ
MEMCK
RCS
DATA BUS
ADDR OUT BUS
SYMBOL
PARAMETER
MINIMUM
MAXIMUM
UNITS
ADDR OUT valid to DMARQ active 3
DMARQ active to MEMCK active 3
MEMCK active to RCS active 4
MEMCK inactive to RCS inactive 4
MEMCK pulse width 1, 2, 4
Input DATA valid to MEMCK inactive 4
Input DATA valid after RCS inactive 4
883
992
0
-67
-61
50
-
-
45
5
Notes:
1. Allows a 20ns data valid set-up time before RCS and RRD/RWR go high.
2. The sum tb + te must not exceed 18.8ms.
3. Supplied as a design limit, but not guaranteed or tested.
4. Guaranteed by test.
Figure 11. RTI Memory Read
t11a
14.9
-
-
18.3
ns
ns
ns
ns
ns
ns
µs
µs
DMARQ active to MEMCK inactive 4
t11h
t11b
t11e
t11c
t11f
t11d
t11g
t11a
t11b
t11c
t11d
t11e
t11f
t11g
t11h