From: Andrey Miroshnikov <andrey@technepisteme.xyz>
Date: Tue, 31 May 2022 22:51:30 +0000 (+0100)
Subject: Added comment
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=86d9a5e3f1309a6b3534fa696c982c9e83297496;p=pinmux.git

Added comment
---

diff --git a/src/spec/iomux.py b/src/spec/iomux.py
index 83f22d1..d69e94a 100644
--- a/src/spec/iomux.py
+++ b/src/spec/iomux.py
@@ -28,6 +28,11 @@ io_layout = (("i", 1),
              ("o", 1)
             )
 
+# This block produces an N-to-1 mux with N 3-bit bank ports and one pad port.
+# The bank ports are intended to be wired to peripheral functions,
+# while the pad port will connect to the I/O pad.
+# Each port has o/oe/i signals, and the bank signal is used to select
+# between the bank ports.
 class IOMuxBlockSingle(Elaboratable):
 
     def __init__(self, n_banks=4):