docs: cover amaranth.lib.cdc.

docs/conf.py

@@ -30,6 +30,7 @@ todo_include_todos = True
 napoleon_google_docstring = False
 napoleon_numpy_docstring = True
 napoleon_use_ivar = True
+napoleon_custom_sections = ["Platform overrides"]
 
 html_theme = "sphinx_rtd_theme"
 html_static_path = ["_static"]

docs/stdlib.rst

@@ -9,3 +9,4 @@ Standard library
    :maxdepth: 2
 
    stdlib/coding
+   stdlib/cdc

docs/stdlib/cdc.rst

@@ -0,0 +1,13 @@
+Clock domain crossing
+#####################
+
+.. py:module:: amaranth.lib.cdc
+
+The ``amaranth.lib.cdc`` package provides modules for transferring data between clock domains.
+
+
+.. autoclass:: FFSynchronizer()
+.. autoclass:: AsyncFFSynchronizer()
+.. autoclass:: ResetSynchronizer()
+.. autoclass:: PulseSynchronizer()
+