yosys/docs/source/cell/index_gate.rst

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.. _sec:celllib_gates:
Gate-level cells
----------------
For gate level logic networks, fixed function single bit cells are used that do
not provide any parameters.
Simulation models for these cells can be found in the file
:file:`techlibs/common/simcells.v` in the Yosys source tree.
In most cases gate level logic networks are created from RTL networks using the
techmap pass. The flip-flop cells from the gate level logic network can be
mapped to physical flip-flop cells from a Liberty file using the dfflibmap pass.
The combinatorial logic cells can be mapped to physical cells from a Liberty
file via ABC using the abc pass.
.. toctree::
:maxdepth: 2
/cell/gate_comb_simple
/cell/gate_comb_combined
/cell/gate_reg_ff
/cell/gate_reg_latch
/cell/gate_other