UT1553B Datasheet, PDF (25/52 Pages) List of Unclassifed Manufacturers – RTI Remote Terminal Interface

DMARQ
MEMCK
RCS
DATA BUS
t_11a
t_11b
t_11h
t_11e
t_11d
t_11c
t_11f
t_11g
ADDR OUT BUS
Figure 11. RTI Memory Read
SYMBOL
t_11a
t_11b
t_11c
t_11d
t_11e
t_11f
t_11g
PARAMETER
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
t_11h
DMARQ active to MEMCK inactive ⁴
Notes:
1. Allows a 20ns data valid set-up time before RCS and RRD/RWR go high.
2. The sum t_b + t_e must not exceed 18.8ms.
3. Supplied as a design limit, but not guaranteed or tested.
4. Guaranteed by test.
MINIMUM
883
0
-
-
50
45
5
-
MAXIMUM
992
14.9
67
61
-
-
-
UNITS
ns
µs
ns
ns
ns
ns
ns
18.3
µs
RTI-25