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authorWerner Almesberger <werner@almesberger.net>2016-12-26 14:49:28 (GMT)
committerWerner Almesberger <werner@almesberger.net>2016-12-26 14:49:28 (GMT)
commit5ee7b02d287cdeffc95d30a412c3845fd177dd2e (patch)
tree722ebfa7425e0b0d468e6575e1d4c49b70aba33d
parente6d8a699f774e78d97d3d99195e7c81f56b308ef (diff)
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iox/iox.tex, n900.map: the keyboard controller uses nRESWARM
-rw-r--r--iox/iox.tex8
-rw-r--r--iox/n900.map1
2 files changed, 5 insertions, 4 deletions
diff --git a/iox/iox.tex b/iox/iox.tex
index 932f110..3a05f25 100644
--- a/iox/iox.tex
+++ b/iox/iox.tex
@@ -621,9 +621,6 @@ Exceptions are discussed below.
Kbd scan & KEYIRQ & KEYIRQ & interrupt & medium%
\footnote{The minimum debounce time is 25~ms (section 8.6.2.15 of
\cite{TCA818}), the maximum debounce time is 60~ms (section 6.9).} \\
- & RESET & & output & slow%
-\footnote{The minimum reset pulse duration is 120~$\mu$s, time to perform
-a reset is also 120~$\mu$s (section 6.7 of \cite{TCA818}).} \\
3.5 mm & HEADPH\_IND & HEADPH\_IND & interrupt & slow \\
& present & MIC\_nPRESENT & interrupt & slow \\
Batt. lid mag. & BAT\_LID & BATT\_LID & interrupt & slow \\
@@ -649,6 +646,11 @@ releases the shutter, which we consider medium-speed.
Power & POWERON & POWERON & Companion chip \\
\end{ioxalt}
+The keyboard controller requires a reset pulse with a minimum duration of
+120~$\mu$s. The time to perform a reset is also 120~$\mu$s (section 6.7 of
+\cite{TCA818}). We use nRESWARM (instead of a dedicated reset signal),
+which has a default duration of about 183~$\mu$s.
+
% - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
\subsection{Environmental sensors}
diff --git a/iox/n900.map b/iox/n900.map
index e33cc8f..7594602 100644
--- a/iox/n900.map
+++ b/iox/n900.map
@@ -3,7 +3,6 @@
Slide mag. sensor SLIDE_SW taken GPIO71
Stylus stylus -
Kbd scan KEYIRQ -
- RESET -
Touch scrn ctrl TSC_RST GPIO104
PEN_INT GPIO100
Main flex connector PROXY taken GPIO89