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authorWerner Almesberger <werner@almesberger.net>2016-12-26 15:06:21 (GMT)
committerWerner Almesberger <werner@almesberger.net>2016-12-26 15:06:21 (GMT)
commit787450797e927bba03a410e2748c41340b2fc0ec (patch)
treefd8291a827b570c83ecab86a51ecb7929410fdac
parentafec76b8a18cea08312addae5575c355ade2b864 (diff)
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iox/iox.tex: resolve contradiction on FM nRESET; mention config input role
-rw-r--r--iox/iox.tex10
1 files changed, 3 insertions, 7 deletions
diff --git a/iox/iox.tex b/iox/iox.tex
index 1a8867f..938f6ee 100644
--- a/iox/iox.tex
+++ b/iox/iox.tex
@@ -783,7 +783,7 @@ of 100~ms (figure 5-5 in section 5.22.5 of \cite{WL1837}.} \\
\subsection{FM}
\begin{ioxdef}
- FM/TX & FM\_nINT & FM\_nINT & interrupt & medium \\
+ FM/TX & FM\_nINT & FM\_nINT & int./output & medium\\
& FM\_nRST & FM\_nRST & output & slow \\
\end{ioxdef}
@@ -807,12 +807,8 @@ Without further background research, we take this as our reference
rate and thus assume that interrupt latency should be significantly
below one ``A'' group time, i.e., 87.7~ms.
-\begin{ioxalt}
- FM/TX & nRST%
-\footnote{Pin name in schematics. The signal is not shown in the block
-diagram and has no individual signal name in the schematics.}
- & Companion chip (RESWARM) \\
-\end{ioxalt}
+The GPO2/nINT pin of the FM transceiver acts as configuration input (!)
+at reset, and must be held low to select the \iic\ interface.
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