[Doc] Add example circuit models for multipliers and update technical highlight with links to the examples
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@ -1242,6 +1242,13 @@ Template
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Full Adder
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Full Adder
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``````````
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``````````
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.. figure:: ./figures/full_adder_1bit_circuit_model.svg
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:scale: 200%
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:alt: An example of a 1-bit full adder
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An example of a 1-bit full adder.
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The code describing the 1-bit full adder is:
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.. code-block:: xml
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.. code-block:: xml
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@ -1260,6 +1267,62 @@ This example shows:
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- A 1-bit full adder which is defined in a Verilog netlist ``adder.v`` and a SPICE netlist ``adder.sp``
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- A 1-bit full adder which is defined in a Verilog netlist ``adder.v`` and a SPICE netlist ``adder.sp``
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- The adder has three 1-bit inputs, i.e., ``a``, ``b`` and ``cin``, and two 2-bit outputs, i.e., ``cout``, ``sumout``.
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- The adder has three 1-bit inputs, i.e., ``a``, ``b`` and ``cin``, and two 2-bit outputs, i.e., ``cout``, ``sumout``.
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.. _circuit_model_single_mode_mult8x8_example:
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Multiplier
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``````````
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.. figure:: ./figures/single_mode_mult8x8_circuit_model.svg
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:scale: 200%
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:alt: An example of a 8-bit multiplier.
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An example of a 8-bit multiplier.
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The code describing the multiplier is:
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.. code-block:: xml
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<circuit_model type="hard_logic" name="mult8x8" prefix="mult8x8" spice_netlist="dsp.sp" verilog_netlist="dsp.v">
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<design_technology type="cmos"/>
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<input_buffer exist="true" circuit_model_name="inv1x"/>
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<output_buffer exist="true" circuit_model_name="inv1x"/>
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<port type="input" prefix="a" size="8"/>
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<port type="input" prefix="b" size="8"/>
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<port type="output" prefix="out" size="16"/>
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</circuit_model>
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This example shows:
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- A 8-bit multiplier which is defined in a Verilog netlist ``dsp.v`` and a SPICE netlist ``dsp.sp``
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.. _circuit_model_multi_mode_mult8x8_example:
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Multi-mode Multiplier
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`````````````````````
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.. figure:: ./figures/multi_mode_mult8x8_circuit_model.svg
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:scale: 200%
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:alt: An example of a 8-bit multiplier which can operating in two modes: (1) dual 4-bit multipliers; and (2) 8-bit multiplier
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An example of a 8-bit multiplier which can operating in two modes: (1) dual 4-bit multipliers; and (2) 8-bit multiplier
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The code describing the multiplier is:
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.. code-block:: xml
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<circuit_model type="hard_logic" name="frac_mult8x8" prefix="frac_mult8x8" spice_netlist="dsp.sp" verilog_netlist="dsp.v">
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<design_technology type="cmos"/>
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<input_buffer exist="true" circuit_model_name="inv1x"/>
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<output_buffer exist="true" circuit_model_name="inv1x"/>
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<port type="input" prefix="a" size="8"/>
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<port type="input" prefix="b" size="8"/>
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<port type="output" prefix="out" size="16"/>
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<port type="sram" prefix="mode" size="1" mode_select="true" circuit_model_name="CCFF" default_value="0"/>
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</circuit_model>
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This example shows:
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- A multi-mode 8-bit multiplier which is defined in a Verilog netlist ``dsp.v`` and a SPICE netlist ``dsp.sp``
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- The multi-mode multiplier can operating in two modes: (1) dual 4-bit multipliers; and (2) 8-bit multiplier
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- The mode-selection bit will be generated by a configurable memory outside the flip-flop, which will be implemented by a circuit model ``CCFF`` defined by users (see an example in :ref:`circuit_model_ccff_example`).
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.. _circuit_model_single_mode_dpram_example:
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.. _circuit_model_single_mode_dpram_example:
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@ -0,0 +1,76 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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<svg xmlns:dc="http://purl.org/dc/elements/1.1/" version="1.1" xmlns:xl="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" viewBox="155.08 312.04775 148.51908 123.62449" width="148.51908" height="123.62449">
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<defs>
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<font-face font-family="Times New Roman" font-size="14" panose-1="2 2 5 3 5 4 5 9 3 4" units-per-em="1000" underline-position="-108.88672" underline-thickness="48.828125" slope="-1166.6423" x-height="430.1758" cap-height="662.1094" ascent="891.1133" descent="-216.3086" font-style="italic" font-weight="400">
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<font-face-src>
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<font-face-name name="TimesNewRomanPS-ItalicMT"/>
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</font-face-src>
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</font-face>
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<font-face font-family="Times New Roman" font-size="13" panose-1="2 2 5 3 5 4 5 9 3 4" units-per-em="1000" underline-position="-108.88672" underline-thickness="48.828125" slope="-1256.384" x-height="430.1758" cap-height="662.1094" ascent="891.1133" descent="-216.3086" font-style="italic" font-weight="400">
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<font-face-src>
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<font-face-name name="TimesNewRomanPS-ItalicMT"/>
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</font-face-src>
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</font-face>
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<marker orient="auto" overflow="visible" markerUnits="strokeWidth" id="FilledArrow_Marker" stroke-linejoin="miter" stroke-miterlimit="10" viewBox="-1 -2 5 4" markerWidth="5" markerHeight="4" color="black">
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<g>
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<path d="M 2.4 0 L 0 -.9 L 0 .9 Z" fill="currentColor" stroke="currentColor" stroke-width="1"/>
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</g>
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</marker>
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</defs>
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<metadata> Produced by OmniGraffle 7.18.5\n2021-05-24 20:57:16 +0000</metadata>
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<g id="1-bit_full_adder" stroke-opacity="1" fill="none" stroke-dasharray="none" fill-opacity="1" stroke="none">
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<title>1-bit full adder</title>
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<g id="1-bit_full_adder_Layer_1">
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<title>Layer 1</title>
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<g id="Graphic_35772">
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<rect x="192.24" y="344.52" width="57.6" height="58.68" stroke="black" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"/>
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<text transform="translate(197.24 366.06263)" fill="black">
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="7.4689445" y="12">adder</tspan>
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</text>
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</g>
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<g id="Graphic_35773"/>
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<g id="Graphic_35774">
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<text transform="translate(211.44037 312.04775)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="1.6587038" y="12">cin</tspan>
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</text>
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</g>
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<g id="Graphic_35775">
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<text transform="translate(155.08 351.9)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="2.4363742" y="12">a</tspan>
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</text>
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</g>
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<g id="Graphic_35776">
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<text transform="translate(155.08 375.26)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="2.4363742" y="12">b</tspan>
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</text>
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</g>
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<g id="Line_35778">
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</g>
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</g>
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<g id="Graphic_35786">
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<text transform="translate(266.04 366.08387)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="0" y="12">sumout</tspan>
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</text>
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</g>
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<g id="Line_35787">
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</g>
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<g id="Graphic_35788">
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<text transform="translate(206.52018 420.12)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="3.3288927" y="12">cout</tspan>
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</text>
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</g>
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<g id="Line_35789">
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</g>
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</g>
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</g>
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</svg>
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After Width: | Height: | Size: 4.8 KiB |
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@ -0,0 +1,249 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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<svg xmlns:dc="http://purl.org/dc/elements/1.1/" version="1.1" xmlns:xl="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" viewBox="264.73112 332.86 459.72887 267.47224" width="459.72887" height="267.47224">
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<defs>
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<font-face font-family="Times New Roman" font-size="14" panose-1="2 2 5 3 5 4 5 9 3 4" units-per-em="1000" underline-position="-108.88672" underline-thickness="48.828125" slope="-1166.6423" x-height="430.1758" cap-height="662.1094" ascent="891.1133" descent="-216.3086" font-style="italic" font-weight="400">
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<font-face-src>
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<font-face-name name="TimesNewRomanPS-ItalicMT"/>
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</font-face-src>
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</font-face>
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<font-face font-family="Times New Roman" font-size="13" panose-1="2 2 5 3 5 4 5 9 3 4" units-per-em="1000" underline-position="-108.88672" underline-thickness="48.828125" slope="-1256.384" x-height="430.1758" cap-height="662.1094" ascent="891.1133" descent="-216.3086" font-style="italic" font-weight="400">
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<font-face-src>
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<font-face-name name="TimesNewRomanPS-ItalicMT"/>
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</font-face-src>
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</font-face>
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<marker orient="auto" overflow="visible" markerUnits="strokeWidth" id="FilledArrow_Marker" stroke-linejoin="miter" stroke-miterlimit="10" viewBox="-1 -2 5 4" markerWidth="5" markerHeight="4" color="black">
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<g>
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<path d="M 2.4 0 L 0 -.9 L 0 .9 Z" fill="currentColor" stroke="currentColor" stroke-width="1"/>
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</g>
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</marker>
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|
<font-face font-family="Times New Roman" font-size="13" panose-1="2 2 6 3 5 4 5 2 3 4" units-per-em="1000" underline-position="-108.88672" underline-thickness="48.828125" slope="0" x-height="447.2656" cap-height="662.1094" ascent="891.1133" descent="-216.3086" font-weight="400">
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<font-face-src>
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<font-face-name name="TimesNewRomanPSMT"/>
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</font-face-src>
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</font-face>
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</defs>
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<metadata> Produced by OmniGraffle 7.18.5\n2021-05-24 21:09:05 +0000</metadata>
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<g id="multi_mode_mult_8x8" stroke-opacity="1" fill="none" stroke-dasharray="none" fill-opacity="1" stroke="none">
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<title>multi_mode_mult_8x8</title>
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<g id="multi_mode_mult_8x8_Layer_1">
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<title>Layer 1</title>
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<text transform="translate(341.2311 455.10526)" fill="black">
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="5.2677727" y="12">MULT</tspan>
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="13.693066" y="27.594727">8x8</tspan>
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</text>
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</g>
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<g id="Graphic_10">
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<text transform="translate(265.23112 449.24)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="5.632742" y="12">a[7:0]</tspan>
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</text>
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</g>
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<g id="Graphic_9">
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<g id="Graphic_5">
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<text transform="translate(419.61837 462.92387)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="0" y="12">out[15:0]</tspan>
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<text transform="translate(588.28 360.5479)" fill="black">
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="5.2677727" y="12">MULT</tspan>
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="13.693066" y="27.594727">4x4</tspan>
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="14.851757" y="43.189453">[0]</tspan>
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</text>
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</g>
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<g id="Graphic_23">
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<text transform="translate(512.28 362.48)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="5.632742" y="12">a[7:4]</tspan>
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="5.2677727" y="12">MULT</tspan>
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|
<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="13.693066" y="27.594727">4x4</tspan>
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<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="14.851757" y="43.189453">[1]</tspan>
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</g>
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="0" y="12">out[7:0]</tspan>
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</g>
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<g id="Graphic_34">
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<text transform="translate(515.34 335.52)" fill="black">
|
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|
<tspan font-family="Times New Roman" font-size="13" font-weight="400" fill="black" x="0" y="12">Operating mode 1: Dual 4x4 multiplier</tspan>
|
||||||
|
</text>
|
||||||
|
</g>
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<g id="Line_36">
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<line x1="365.0311" y1="516.51" x2="365.0311" y2="509.14" marker-end="url(#FilledArrow_Marker)" stroke="black" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"/>
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</g>
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<g id="Graphic_37">
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<text transform="translate(342.42474 516.51)" fill="black">
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<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="8.527273" y="12">mode</tspan>
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</g>
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<text transform="translate(268.29112 415.98)" fill="black">
|
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|
<tspan font-family="Times New Roman" font-size="13" font-weight="400" fill="black" x="0" y="12">Schematic: multi-mode 8x8 multiplier</tspan>
|
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|
</text>
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|
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<text transform="translate(588.28 525.30526)" fill="black">
|
||||||
|
<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="5.2677727" y="12">MULT</tspan>
|
||||||
|
<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="13.693066" y="27.594727">8x8</tspan>
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|
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|
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|
<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="5.632742" y="12">a[7:0]</tspan>
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|
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|
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|
</g>
|
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|
<g id="Graphic_56">
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|
<text transform="translate(515.34 542.3)" fill="black">
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|
<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="2.5727406" y="12">b[7:0]</tspan>
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|
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|
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|
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|
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|
</g>
|
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|
<g id="Graphic_52">
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|
<text transform="translate(666.6672 533.12386)" fill="black">
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|
<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="0" y="12">out[15:0]</tspan>
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|
</text>
|
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|
</g>
|
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|
</g>
|
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|
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</g>
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|
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|
<tspan font-family="Times New Roman" font-size="13" font-weight="400" fill="black" x="0" y="12">Operating mode 2: 8x8 multiplier</tspan>
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
After Width: | Height: | Size: 16 KiB |
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|
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|
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|
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|
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|
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|
<font-face font-family="Times New Roman" font-size="13" panose-1="2 2 5 3 5 4 5 9 3 4" units-per-em="1000" underline-position="-108.88672" underline-thickness="48.828125" slope="-1256.384" x-height="430.1758" cap-height="662.1094" ascent="891.1133" descent="-216.3086" font-style="italic" font-weight="400">
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
<title>single_mode_mult_8x8</title>
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|
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|
<title>Layer 1</title>
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|
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|
<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="5.2677727" y="12">MULT</tspan>
|
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|
<tspan font-family="Times New Roman" font-size="14" font-style="italic" font-weight="400" fill="black" x="13.693066" y="27.594727">8x8</tspan>
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|
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|
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|
<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="5.632742" y="12">a[7:0]</tspan>
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|
<tspan font-family="Times New Roman" font-size="13" font-style="italic" font-weight="400" fill="black" x="2.5727406" y="12">b[7:0]</tspan>
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||||||
|
<line x1="320.67975" y1="405.48224" x2="315" y2="416.1745" stroke="black" stroke-linecap="round" stroke-linejoin="round" stroke-width="1"/>
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</g>
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</g>
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</g>
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</svg>
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After Width: | Height: | Size: 4.3 KiB |
|
|
@ -54,8 +54,9 @@ Supported Circuit Designs
|
||||||
| | | | - :ref:`circuit_model_multi_mode_dpram_example` |
|
| | | | - :ref:`circuit_model_multi_mode_dpram_example` |
|
||||||
+-----------------+--------------+-----------+-----------------------------------------------------+
|
+-----------------+--------------+-----------+-----------------------------------------------------+
|
||||||
| | Arithmetic | No | Yes | - **Any size** |
|
| | Arithmetic | No | Yes | - **Any size** |
|
||||||
| | Units | | | - Multiplier |
|
| | Units | | | - :ref:`circuit_model_full_adder_example` |
|
||||||
| | | | - :ref:`circuit_model_full_adder_example` |
|
| | | | - :ref:`circuit_model_single_mode_mult8x8_example` |
|
||||||
|
| | | | - :ref:`circuit_model_multi_mode_mult8x8_example` |
|
||||||
+-----------------+--------------+-----------+-----------------------------------------------------+
|
+-----------------+--------------+-----------+-----------------------------------------------------+
|
||||||
| I/O | No | Yes | - :ref:`circuit_model_gpio_example` |
|
| I/O | No | Yes | - :ref:`circuit_model_gpio_example` |
|
||||||
| | | | - Bi-directional buffer |
|
| | | | - Bi-directional buffer |
|
||||||
|
|
|
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Loading…
Reference in New Issue