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Refactor readback mux implementation. Improves performance (#155) and eliminates illegal streaming operator usage (#165)

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Alex Mykyta
2025-12-10 23:17:33 -08:00
parent 4201ce975e
commit 9fc95b8769
24 changed files with 1116 additions and 634 deletions
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9
docs/architecture.rst
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@@ -38,18 +38,15 @@ This section also assigns any hardware interface outputs.
Readback
--------
The readback layer aggregates and reduces all readable registers into a single
read response. During a read operation, the same address decode strobes are used
to select the active register that is being accessed.
This allows for a simple OR-reduction operation to be used to compute the read
data response.
The readback layer aggregates and MUXes all readable registers into a single
read response.
For designs with a large number of software-readable registers, an optional
fanin re-timing stage can be enabled. This stage is automatically inserted at a
balanced point in the read-data reduction so that fanin and logic-levels are
optimally reduced.
.. figure:: diagrams/readback.png
.. figure:: diagrams/rt-readback-fanin.png
:width: 65%
:align: center