The DLATR component is a level-sensitive digital register with a high enable and a configurable reset input.
The strength parameter specifies a map on logic signals. Its value consists of a symbol, , with being one of the following: . The three subscripts define the map:
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–
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A U always maps to a U.
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–
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{X,Y,W,-} map to the first subscript ().
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–
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{0,L} map to the second subscript ().
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–
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{1,H} map to the third subscript (h).
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For example, means {X,Y,W,-} map to X, {0,L} map to 0, {1,H} map to H.
The ResetMap parameter ia a one-dimensional 9-element array that maps the reset input to the integers 1 to 4, inclusive. The following table defines the output signal levels associated with each integer. Each symbol in a cell corresponds to an output level; the actual output level is determined by the strength parameter map.
d = dataIn
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DataIn
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Enable
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Reset
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DataOut
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Map
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*
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*
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U
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U
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1
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*
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*
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1
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0
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2
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*
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0
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0
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NC
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3
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*
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1
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0
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DataIn
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3
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*
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X
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0
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X or U or NC
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3
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*
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U
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1
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U
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4
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*
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U
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X
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X or U or 0 or NC
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4
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Truth Table for active-low reset:
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DataIn
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Enable
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Reset
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DataOut
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Map
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*
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*
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U
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U
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1
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*
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*
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0
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0
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2
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*
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0
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1
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NC
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3
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*
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1
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1
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DataIn
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3
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*
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X
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1
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X or U or NC
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3
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*
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U
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0
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U
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4
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*
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U
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X
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X or U or 0 or NC
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4
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