Changeset 10142 for firmware


Ignore:
Timestamp:
Feb 8, 2011, 12:44:49 PM (9 years ago)
Author:
neise
Message:
 
File:
1 edited

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  • firmware/FAD/doc/memory_manager.tex

    r10140 r10142  
    2828\newpage
    2929
    30 \section{\tt memory manager.vhd}
    3130
    32 The Memory Manager is used to calculate:
    33 \begin{itemize}
    34 \item
    35 \end{itemize}
     31\section{data order in 64bit address space}
    3632
    37 \subsection{data order in 64bit address space}
    38 
    39 When data is input into Data-RAM by the DataGenerator, the data is fed in as words of 64bit,
    40 because the 13bits of each of the four ADCs is processed in a parallel manner.
     33When data is input into Data-RAM by the DataGenerator, the data is fed in as words of 64bit.
    4134
    4235Each Event constists of an EventHeader, the so called ChannelData, and a small EventFooter.
     
    84770x23A5  & data adc3     & data adc2     & data adc1     & data adc0     & ADC Data end of ROI \\
    8578\hline
    86 0x23A6  & ??    & ??    & ??    & ??    & FOOTER \\
     790x23A6  & 0x0000        & 0x0000        & 0x04FE        & 0x4242        & FOOTER \\
    8780\hline
    8881\end {tabular}
    8982
    90 \caption{word order of event in Data RAM. 64bit addressing.}
     83\caption{word order of event in Data RAM. 64bit addressing. As of 08.02.2011}
    9184\label{64bitRAM}
    9285\end{table}
     
    9992Then the EventFooter is added and the Readout is finished.
    10093
    101 \subsection{role of memory manager for DataGenerator}
    102 After FAD-configuration memory manager informs data generator, whether additional Data may be read out or not.
    103 {\tt ram write ea } is used to inform DataGenerator.\\
    104 
    105 DataGenerator needs to know how many samples to read out of each channel.
    106 {\tt roi max} is carriing this information. \\
    107 
    108 
    109 \appendix
    110 
    11194
    11295\end{document}
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