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Unchecked: The lookup table definition remains unchanged after the dialog is closed.ĭefault value of lookup table output if the input value is not found in the lookup table.Checked: The lookup table will be redefined after the dialog is closed.Number of output bits for the digital lookup tableĭetermines whether the lookup table is to be redefined after the dialog is closed. Number of input bits for the digital lookup table Make the appropriate changes to the fields described in the table below the image.ĭelay from when the input state changes until the output changes.Double click the symbol on the schematic to open the editing dialog to the Parameters tab.To configure the digital lookup table with don't care input definitions, follow these steps: SIMPLIS_DIGI1_D_LOOKUP_TABLE_DONTCARE_Y: With Ground ReferenceĮditing the Digital Lookup Table with Don't Care Input Definitions.SIMPLIS_DIGI1_D_LOOKUP_TABLE_DONTCARE_N: Without Ground Reference.None - the device model is generated before simulation. None - the symbol is automatically generated when placed or edited. This device is compatible with the SIMPLIS simulator. Editing the Digital Lookup Table with Don't Care Input Definitions.The points definition of the digital lookup table is more flexible and it is slightly easier to configure. If you do not require input definitions which include don't care states, see Digital Lookup Table. Using the lookup table with don't care input definitions, you can easily implement, test, and revise extremely complex logic, all without changing the schematic view of the design. The digital lookup table with don't care input definitions is even more powerful than the digital lookup table, especially for defining state machines or complex logic. A default output state determines the output if the input state is not defined in the table. Unlike the Digital Lookup Table, this device allows the input space to include don't care inputs. The truth table maps logical combinations of input states to output states. The Digital Lookup Table with Don't Care Input Definitions models combinatorial logic defined with a truth table.
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Digital Lookup Table with Don't Care Input Definitions