Differences

This shows you the differences between two versions of the page.

--- tools:netgen [2020/12/02 01:00]
127.0.0.1 external edit
+++ tools:netgen [2022/05/21 08:44]
rajit [Attributes]
@@ Line 134: / Line 134: @@
 ^ Attribute ^ Meaning ^
-| keeper | If set to 0 does not generate a staticizer automatically, even though the node is state-holding |
+| keeper | The production rules for a signal are analyzed to determine if the pull-up and pull-down networks are perfect complements of each other. If they aren't, then a keeper is generated. There are two common scenarios when this behavior is undesired: (i) the gate is intended to be dynamic, and so it is state-holding but a staticizer should not be generated. Set ''keeper'' to ''0'' for this behavior. (ii) the gate looks state-holding, but it is actually a combinational gate because certain inputs are supposed to be complements of each other. In this case, set ''keeper'' to ''2''. |
 | comb | If set to 1, uses combinational feedback rather than a weak inverter for the staticizer; if 0, uses a weak inverter instead of combinational feedback |
 | iskeeper | used to let prs2net know that the specified production rule is in fact the manually  specified staticizer/keeper circuit. prs2net labels transistors used for keepers in the spice netlist, and this attribute can be used to ensure that manually specified keepers are also labeled (with ''_keeper''). |