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Conv TTL Blocking
Commit 4bcd1c14 authored by gilsoriano's avatar gilsoriano
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Updated pdf of CONV-TTL-BLO issues

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pcb/doc/issues/conv-ttl-blo/02446_issues.tex
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......@@ -613,6 +613,58 @@ place a small load at the output when no external load is connected.
\pagebreak
\section{Other issues}
\subsection{Change of logic family for Schmitt triggers}
As done in CONV-TTL-RS485, ACT family is changed for LVT family for all the
Schmitt triggers.
\begin{table}[!htb]
\begin{center}
\newcolumntype{R}{>{\raggedleft\arraybackslash}X}%
\begin{tabularx}{13cm}{|l|R|}
\hline
\textbf{OHWR issue 603} & \url{http://www.ohwr.org/issues/603}\\
\hline
\hline
\multicolumn{2}{|l|}{
\begin{minipage}[t]{0.95\columnwidth}%
To allow better compatibility between different modules, LVT family
will subsitute ACT one because of its wider use as logic level
translator.
\end{minipage}}\tabularnewline
\hline
\end{tabularx}
\caption{Issue 603: Change of logic family for Schmitt triggers}
\end{center}
\end{table}
\subsection{Separate control lines for DACs}
As done in CONV-TTL-RS485, separate control of the DACs has been included.
\begin{table}[!htb]
\begin{center}
\newcolumntype{R}{>{\raggedleft\arraybackslash}X}%
\begin{tabularx}{13cm}{|l|R|}
\hline
\textbf{OHWR issue 604} & \url{http://www.ohwr.org/issues/604}\\
\hline
\hline
\multicolumn{2}{|l|}{
\begin{minipage}[t]{0.95\columnwidth}%
According to Javier's recommendation, now the control lines are
independent for every DAC.
\end{minipage}}\tabularnewline
\hline
\end{tabularx}
\caption{Issue 604: Separate control lines for DACs}
\end{center}
\end{table}
\subsection{Board Test Points}
\begin{table}[!htb]
......@@ -633,6 +685,8 @@ place a small load at the output when no external load is connected.
\end{center}
\end{table}
\pagebreak
\subsection{White Rabbit connector in front panel}
It has been detected in different boards (such as WR repetitors) that the
......@@ -680,7 +734,6 @@ however the issue is reported below:
\end{center}
\end{table}
\pagebreak
\subsection{Protection for misconnections of the inputs}
A double control mechanism must be added in the FPGA to avoid damage in the
Blocking output stage.\\
......@@ -711,8 +764,12 @@ Blocking output stage.\\
The proposal is to trigger event upon edge detection, and measure the level of
the inputs to report problems back through the I2C connection.\\
\pagebreak
\subsection{12 volts fuse to be added}
It was considered time ago. To be discussed in the meeting.
\begin{table}[!htb]
\begin{center}
\newcolumntype{R}{>{\raggedleft\arraybackslash}X}%
......@@ -739,7 +796,6 @@ the inputs to report problems back through the I2C connection.\\
\end{center}
\end{table}
\pagebreak
\subsection{Add silkscreen for fuses}
\begin{table}[!htb]
\begin{center}
......
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