pinmux/pinmux_chennai_2018.tex

   1 \documentclass[slidestop]{beamer}
   2 \usepackage{beamerthemesplit}
   3 \usepackage{graphics}
   4 \usepackage{pstricks}
   5
   6 \title{SIMD}
   7 \author{Rishabh Jain}
   8 \author{Luke Kenneth Casson Leighton}
   9
  10
  11 \begin{document}
  12
  13 \frame{
  14    \begin{center}
  15     \huge{Pin Multiplexer}\\
  16     \vspace{32pt}
  17     \Large{Auto-generating documentation, code \\
  18                         and resources for a Pinmux}\\
  19     \vspace{24pt}
  20     \Large{[proposed for] Chennai 9th RISC-V Workshop}\\
  21     \vspace{16pt}
  22     \large{\today}
  23   \end{center}
  24 }
  25
  26
  27 \frame{\frametitle{Credits and Acknowledgements}
  28
  29  \begin{itemize}
  30    \item TODO\vspace{10pt}
  31   \end{itemize}
  32 }
  33
  34
  35 \frame{\frametitle{Standard GPIO 4-way in/out Mux and I/O pad}
  36  \begin{center}
  37   \includegraphics[height=2.5in]{../shakti/m_class/mygpiomux.jpg}\\
  38   {\bf 4-in, 4-out, pullup/down, hysteresis, edge-detection (EINT)}
  39  \end{center}
  40 }
  41
  42
  43 \frame{\frametitle{Register-to-pad "control" settings}
  44  \begin{center}
  45   \includegraphics[height=2.5in]{reg_gpio_cap_ctrl.jpg}\\
  46   {\bf pullup/down, hysteresis, current, edge-detection}
  47  \end{center}
  48 }
  49
  50
  51 \frame{\frametitle{In/Out muxing, direction control}
  52  \begin{center}
  53   \includegraphics[height=2.5in]{reg_gpio_fn_ctrl.jpg}\\
  54   {\bf Note: function can control I/O direction}
  55  \end{center}
  56 }
  57
  58
  59 \frame{\frametitle{Simplified I/O pad Block Diagram}
  60  \begin{center}
  61   \includegraphics[height=2.5in]{reg_gpio_pinblock.jpg}\\
  62   {\bf 3 wires: IN, OUT, OUTEN (also = !INEN) }
  63  \end{center}
  64 }
  65
  66
  67 \frame{\frametitle{Output (and OUTEN) Wiring. 2 pins, 2 GPIO, 2 Fns}
  68  \begin{center}
  69   \includegraphics[height=2.5in]{reg_gpio_out_wiring.jpg}\\
  70   {\bf Reg0 for Pin0, Reg1 for Pin1, Output and OUTEN same mux }
  71  \end{center}
  72 }
  73
  74
  75 \frame{\frametitle{Input Selection and Priority Muxing}
  76  \begin{center}
  77   \includegraphics[height=0.75in]{reg_gpio_comparator.jpg}\\
  78   {\bf Muxer enables input selection}\\
  79   \vspace{10pt}
  80   \includegraphics[height=1.25in]{reg_gpio_in_prioritymux.jpg}\\
  81   {\bf However multiple inputs must be prioritised }
  82  \end{center}
  83 }
  84
  85
  86 \frame{\frametitle{Input Mux Wiring}
  87  \begin{center}
  88   \includegraphics[height=2.5in]{reg_gpio_in_wiring.jpg}\\
  89   {\bf Pin Mux selection vals NOT same as FN selection vals}
  90  \end{center}
  91 }
  92
  93
  94 \frame{\frametitle{Summary}
  95
  96  \begin{itemize}
  97    \item TODO
  98   \end{itemize}
  99 }
 100
 101
 102 \frame{
 103   \begin{center}
 104     {\Huge The end\vspace{20pt}\\
 105                    Thank you\vspace{20pt}\\
 106                    Questions?\vspace{20pt}
 107         }
 108   \end{center}
 109
 110   \begin{itemize}
 111         \item http://libre-riscv.org/shakti/m\_class/pinmux/
 112   \end{itemize}
 113 }
 114
 115
 116 \end{document}