[Arch] Add a new example architecture where a DSP block occupies a 2x2 grid
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tangxifan
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<!--
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Low-cost homogeneous FPGA Architecture.
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- Skywater 130 nm technology
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- General purpose logic block:
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K = 4, N = 8, fracturable 4 LUTs (can operate as one 4-LUT or two 3-LUTs with all 3 inputs shared)
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with optionally registered outputs
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- Heterogeneous block
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8-bit multiplier
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- Routing architecture:
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- 10% L = 1, fc_in = 0.15, Fc_out = 0.10
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- 10% L = 2, fc_in = 0.15, Fc_out = 0.10
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- 80% L = 4, fc_in = 0.15, Fc_out = 0.10
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- 100 routing tracks per channel
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Authors: Xifan Tang
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-->
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<architecture>
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<!--
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ODIN II specific config begins
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Describes the types of user-specified netlist blocks (in blif, this corresponds to
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".model [type_of_block]") that this architecture supports.
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Note: Basic LUTs, I/Os, and flip-flops are not included here as there are
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already special structures in blif (.names, .input, .output, and .latch)
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that describe them.
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-->
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<models>
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<model name="mult_8">
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<input_ports>
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<port name="A" combinational_sink_ports="Y"/>
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<port name="B" combinational_sink_ports="Y"/>
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</input_ports>
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<output_ports>
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<port name="Y"/>
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</output_ports>
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</model>
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<model name="mult_16">
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<input_ports>
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<port name="A" combinational_sink_ports="Y"/>
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<port name="B" combinational_sink_ports="Y"/>
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</input_ports>
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<output_ports>
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<port name="Y"/>
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</output_ports>
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</model>
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<!-- A virtual model for I/O to be used in the physical mode of io block -->
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<model name="io">
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<input_ports>
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<port name="outpad"/>
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</input_ports>
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<output_ports>
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<port name="inpad"/>
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</output_ports>
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</model>
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<model name="adder_lut4">
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<input_ports>
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<port name="in" combinational_sink_ports="lut2_out lut4_out"/>
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</input_ports>
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<output_ports>
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<port name="lut2_out"/>
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<port name="lut4_out"/>
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</output_ports>
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</model>
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<model name="carry_follower">
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<input_ports>
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<port name="a" combinational_sink_ports="cout"/>
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<port name="b" combinational_sink_ports="cout"/>
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<port name="cin" combinational_sink_ports="cout"/>
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</input_ports>
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<output_ports>
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<port name="cout"/>
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</output_ports>
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</model>
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<model name="frac_lut4">
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<input_ports>
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<port name="in"/>
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</input_ports>
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<output_ports>
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<port name="lut2_out"/>
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<port name="lut3_out"/>
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<port name="lut4_out"/>
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</output_ports>
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</model>
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<model name="carry_follower_physical">
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<input_ports>
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<port name="a" combinational_sink_ports="cout"/>
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<port name="b" combinational_sink_ports="cout"/>
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<port name="cin" combinational_sink_ports="cout"/>
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</input_ports>
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<output_ports>
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<port name="cout"/>
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</output_ports>
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</model>
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<!-- A virtual model for scan-chain flip-flop to be used in the physical mode of FF -->
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<model name="scff">
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<input_ports>
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<port name="D" clock="clk"/>
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<port name="DI" clock="clk"/>
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<port name="reset" clock="clk"/>
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<port name="clk" is_clock="1"/>
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</input_ports>
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<output_ports>
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<port name="Q" clock="clk"/>
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</output_ports>
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</model>
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</models>
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<tiles>
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<!-- Do NOT add clock pins to I/O here!!! VPR does not build clock network in the way that OpenFPGA can support
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If you need to register the I/O, define clocks in the circuit models
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These clocks can be handled in back-end
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-->
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<!-- Top-side has 1 I/O per tile -->
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<tile name="io_top" capacity="9" area="0">
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<equivalent_sites>
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<site pb_type="io"/>
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</equivalent_sites>
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<input name="outpad" num_pins="1"/>
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<output name="inpad" num_pins="1"/>
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<fc in_type="frac" in_val="0.15" out_type="frac" out_val="0.10"/>
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<pinlocations pattern="custom">
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<loc side="bottom">io_top.outpad io_top.inpad</loc>
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</pinlocations>
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</tile>
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<!-- Right-side has 1 I/O per tile -->
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<tile name="io_right" capacity="9" area="0">
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<equivalent_sites>
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<site pb_type="io"/>
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</equivalent_sites>
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<input name="outpad" num_pins="1"/>
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<output name="inpad" num_pins="1"/>
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<fc in_type="frac" in_val="0.15" out_type="frac" out_val="0.10"/>
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<pinlocations pattern="custom">
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<loc side="left">io_right.outpad io_right.inpad</loc>
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</pinlocations>
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</tile>
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<!-- Bottom-side has 9 I/O per tile -->
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<tile name="io_bottom" capacity="9" area="0">
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<equivalent_sites>
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<site pb_type="io"/>
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</equivalent_sites>
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<input name="outpad" num_pins="1"/>
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<output name="inpad" num_pins="1"/>
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<fc in_type="frac" in_val="0.15" out_type="frac" out_val="0.10"/>
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<pinlocations pattern="custom">
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<loc side="top">io_bottom.outpad io_bottom.inpad</loc>
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</pinlocations>
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</tile>
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<!-- Left-side has 1 I/O per tile -->
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<tile name="io_left" capacity="9" area="0">
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<equivalent_sites>
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<site pb_type="io"/>
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</equivalent_sites>
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<input name="outpad" num_pins="1"/>
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<output name="inpad" num_pins="1"/>
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<fc in_type="frac" in_val="0.15" out_type="frac" out_val="0.10"/>
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<pinlocations pattern="custom">
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<loc side="right">io_left.outpad io_left.inpad</loc>
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</pinlocations>
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</tile>
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<!-- CLB has most pins on the top and right sides -->
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<tile name="clb" area="53894">
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<equivalent_sites>
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<site pb_type="clb"/>
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</equivalent_sites>
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<input name="I0" num_pins="2" equivalent="full"/>
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<input name="I0i" num_pins="2" equivalent="none"/>
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<input name="I1" num_pins="2" equivalent="full"/>
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<input name="I1i" num_pins="2" equivalent="none"/>
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<input name="I2" num_pins="2" equivalent="full"/>
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<input name="I2i" num_pins="2" equivalent="none"/>
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<input name="I3" num_pins="2" equivalent="full"/>
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<input name="I3i" num_pins="2" equivalent="none"/>
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<input name="I4" num_pins="2" equivalent="full"/>
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<input name="I4i" num_pins="2" equivalent="none"/>
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<input name="I5" num_pins="2" equivalent="full"/>
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<input name="I5i" num_pins="2" equivalent="none"/>
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<input name="I6" num_pins="2" equivalent="full"/>
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<input name="I6i" num_pins="2" equivalent="none"/>
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<input name="I7" num_pins="2" equivalent="full"/>
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<input name="I7i" num_pins="2" equivalent="none"/>
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<input name="reg_in" num_pins="1"/>
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<input name="sc_in" num_pins="1"/>
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<input name="cin" num_pins="1"/>
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<input name="reset" num_pins="1" is_non_clock_global="true"/>
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<output name="O" num_pins="16" equivalent="none"/>
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<output name="reg_out" num_pins="1"/>
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<output name="sc_out" num_pins="1"/>
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<output name="cout" num_pins="1"/>
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<clock name="clk" num_pins="1"/>
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<fc in_type="frac" in_val="0.15" out_type="frac" out_val="0.10">
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<fc_override port_name="reg_in" fc_type="frac" fc_val="0"/>
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<fc_override port_name="reg_out" fc_type="frac" fc_val="0"/>
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<fc_override port_name="sc_in" fc_type="frac" fc_val="0"/>
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<fc_override port_name="sc_out" fc_type="frac" fc_val="0"/>
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<fc_override port_name="cin" fc_type="frac" fc_val="0"/>
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<fc_override port_name="cout" fc_type="frac" fc_val="0"/>
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<fc_override port_name="clk" fc_type="frac" fc_val="0"/>
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<fc_override port_name="reset" fc_type="frac" fc_val="0"/>
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</fc>
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<!--pinlocations pattern="spread"/-->
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<pinlocations pattern="custom">
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<loc side="left">clb.clk clb.reset</loc>
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<loc side="top">clb.reg_in clb.sc_in clb.cin clb.O[7:0] clb.I0 clb.I0i clb.I1 clb.I1i clb.I2 clb.I2i clb.I3 clb.I3i</loc>
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<loc side="right">clb.O[15:8] clb.I4 clb.I4i clb.I5 clb.I5i clb.I6 clb.I6i clb.I7 clb.I7i</loc>
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<loc side="bottom">clb.reg_out clb.sc_out clb.cout</loc>
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</pinlocations>
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</tile>
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<tile name="mult_16" height="2" width="2" area="396000">
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<equivalent_sites>
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<site pb_type="mult_16" pin_mapping="direct"/>
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</equivalent_sites>
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<input name="a" num_pins="16"/>
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<input name="b" num_pins="16"/>
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<output name="out" num_pins="32"/>
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<fc in_type="frac" in_val="0.15" out_type="frac" out_val="0.10"/>
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<!-- Highly recommand to customize pin location when direct connection is used!!! -->
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<!--pinlocations pattern="spread"/-->
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<pinlocations pattern="custom">
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<loc side="left" yoffset="0">mult_16.a[0:1] mult_16.b[0:1] mult_16.out[0:3]</loc>
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<loc side="left" yoffset="1">mult_16.a[2:3] mult_16.b[2:3] mult_16.out[4:7]</loc>
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<loc side="top" xoffset="0" yoffset="1">mult_16.a[4:5] mult_16.b[4:5] mult_16.out[8:11]</loc>
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<loc side="top" xoffset="1" yoffset="1">mult_16.a[6:7] mult_16.b[6:7] mult_16.out[12:15]</loc>
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<loc side="right" xoffset="1" yoffset="0">mult_16.a[8:9] mult_16.b[8:9] mult_16.out[16:19]</loc>
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<loc side="right" xoffset="1" yoffset="1">mult_16.a[10:11] mult_16.b[10:11] mult_16.out[20:23]</loc>
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<loc side="bottom" xoffset="0">mult_16.a[12:13] mult_16.b[12:13] mult_16.out[24:27]</loc>
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<loc side="bottom" xoffset="1">mult_16.a[14:15] mult_16.b[14:15] mult_16.out[28:31]</loc>
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</pinlocations>
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</tile>
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</tiles>
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<!-- ODIN II specific config ends -->
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<!-- Physical descriptions begin -->
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<layout tileable="true">
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<auto_layout aspect_ratio="1.0">
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<!--Perimeter of 'io' blocks with 'EMPTY' blocks at corners-->
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<row type="io_top" starty="H-1" priority="100"/>
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<row type="io_bottom" starty="0" priority="100"/>
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<col type="io_left" startx="0" priority="100"/>
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<col type="io_right" startx="W-1" priority="100"/>
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<corners type="EMPTY" priority="101"/>
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<!--Fill with 'clb'-->
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<fill type="clb" priority="10"/>
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<!--Column of 'mult_8' with 'EMPTY' blocks wherever a 'mult_8' does not fit. Vertical offset by 1 for perimeter.-->
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<col type="mult_16" startx="2" starty="1" repeatx="8" priority="20"/>
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</auto_layout>
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<fixed_layout name="4x4" width="6" height="6">
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<!--Perimeter of 'io' blocks with 'EMPTY' blocks at corners-->
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<row type="io_top" starty="H-1" priority="100"/>
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<row type="io_bottom" starty="0" priority="100"/>
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<col type="io_left" startx="0" priority="100"/>
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<col type="io_right" startx="W-1" priority="100"/>
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<corners type="EMPTY" priority="101"/>
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<!--Fill with 'clb'-->
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<fill type="clb" priority="10"/>
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<!--Column of 'mult_8' with 'EMPTY' blocks wherever a 'mult_8' does not fit. Vertical offset by 1 for perimeter.-->
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<col type="mult_16" startx="2" starty="1" repeatx="8" priority="20"/>
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</fixed_layout>
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<fixed_layout name="12x12" width="14" height="14">
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<!--Perimeter of 'io' blocks with 'EMPTY' blocks at corners-->
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<row type="io_top" starty="H-1" priority="100"/>
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<row type="io_bottom" starty="0" priority="100"/>
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<col type="io_left" startx="0" priority="100"/>
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<col type="io_right" startx="W-1" priority="100"/>
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<corners type="EMPTY" priority="101"/>
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<!--Fill with 'clb'-->
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<fill type="clb" priority="10"/>
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<!--Column of 'mult_8' with 'EMPTY' blocks wherever a 'mult_8' does not fit. Vertical offset by 1 for perimeter.-->
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<col type="mult_16" startx="2" starty="1" repeatx="8" priority="20"/>
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</fixed_layout>
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</layout>
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<device>
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<!-- VB & JL: Using Ian Kuon's transistor sizing and drive strength data for routing, at 40 nm. Ian used BPTM
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models. We are modifying the delay values however, to include metal C and R, which allows more architecture
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experimentation. We are also modifying the relative resistance of PMOS to be 1.8x that of NMOS
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(vs. Ian's 3x) as 1.8x lines up with Jeff G's data from a 45 nm process (and is more typical of
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45 nm in general). I'm upping the Rmin_nmos from Ian's just over 6k to nearly 9k, and dropping
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RminW_pmos from 18k to 16k to hit this 1.8x ratio, while keeping the delays of buffers approximately
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lined up with Stratix IV.
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We are using Jeff G.'s capacitance data for 45 nm (in tech/ptm_45nm).
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Jeff's tables list C in for transistors with widths in multiples of the minimum feature size (45 nm).
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The minimum contactable transistor is 2.5 * 45 nm, so I need to multiply drive strength sizes in this file
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by 2.5x when looking up in Jeff's tables.
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The delay values are lined up with Stratix IV, which has an architecture similar to this
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proposed FPGA, and which is also 40 nm
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C_ipin_cblock: input capacitance of a track buffer, which VPR assumes is a single-stage
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4x minimum drive strength buffer. -->
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<sizing R_minW_nmos="8926" R_minW_pmos="16067"/>
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<!-- The grid_logic_tile_area below will be used for all blocks that do not explicitly set their own (non-routing)
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area; set to 0 since we explicitly set the area of all blocks currently in this architecture file.
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-->
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<area grid_logic_tile_area="0"/>
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<chan_width_distr>
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<x distr="uniform" peak="1.000000"/>
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<y distr="uniform" peak="1.000000"/>
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</chan_width_distr>
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<switch_block type="wilton" fs="3" sub_type="subset" sub_fs="3"/>
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<connection_block input_switch_name="ipin_cblock"/>
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</device>
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<switchlist>
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<!-- VB: the mux_trans_size and buf_size data below is in minimum width transistor *areas*, assuming the purple
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book area formula. This means the mux transistors are about 5x minimum drive strength.
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We assume the first stage of the buffer is 3x min drive strength to be reasonable given the large
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mux transistors, and this gives a reasonable stage ratio of a bit over 5x to the second stage. We assume
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the n and p transistors in the first stage are equal-sized to lower the buffer trip point, since it's fed
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by a pass transistor mux. We can then reverse engineer the buffer second stage to hit the specified
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buf_size (really buffer area) - 16.2x minimum drive nmos and 1.8*16.2 = 29.2x minimum drive.
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I then took the data from Jeff G.'s PTM modeling of 45 nm to get the Cin (gate of first stage) and Cout
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(diff of second stage) listed below. Jeff's models are in tech/ptm_45nm, and are in min feature multiples.
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The minimum contactable transistor is 2.5 * 45 nm, so I need to multiply the drive strength sizes above by
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2.5x when looking up in Jeff's tables.
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Finally, we choose a switch delay (58 ps) that leads to length 4 wires having a delay equal to that of SIV of 126 ps.
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This also leads to the switch being 46% of the total wire delay, which is reasonable. -->
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<switch type="mux" name="L1_mux" R="551" Cin=".77e-15" Cout="4e-15" Tdel="58e-12" mux_trans_size="2.630740" buf_size="27.645901"/>
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<switch type="mux" name="L2_mux" R="551" Cin=".77e-15" Cout="4e-15" Tdel="58e-12" mux_trans_size="2.630740" buf_size="27.645901"/>
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<switch type="mux" name="L4_mux" R="551" Cin=".77e-15" Cout="4e-15" Tdel="58e-12" mux_trans_size="2.630740" buf_size="27.645901"/>
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<!--switch ipin_cblock resistance set to yeild for 4x minimum drive strength buffer-->
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<switch type="mux" name="ipin_cblock" R="2231.5" Cout="0." Cin="1.47e-15" Tdel="7.247000e-11" mux_trans_size="1.222260" buf_size="auto"/>
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</switchlist>
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<segmentlist>
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<!--- VB & JL: using ITRS metal stack data, 96 nm half pitch wires, which are intermediate metal width/space.
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With the 96 nm half pitch, such wires would take 60 um of height, vs. a 90 nm high (approximated as square) Stratix IV tile so this seems
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reasonable. Using a tile length of 90 nm, corresponding to the length of a Stratix IV tile if it were square. -->
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<!-- GIVE a specific name for the segment! OpenFPGA appreciate that! -->
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<segment name="L1" freq="0.10" length="1" type="unidir" Rmetal="101" Cmetal="22.5e-15">
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<mux name="L1_mux"/>
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<sb type="pattern">1 1</sb>
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<cb type="pattern">1</cb>
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</segment>
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<segment name="L2" freq="0.10" length="2" type="unidir" Rmetal="101" Cmetal="22.5e-15">
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<mux name="L2_mux"/>
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<sb type="pattern">1 1 1</sb>
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<cb type="pattern">1 1</cb>
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</segment>
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<segment name="L4" freq="0.80" length="4" type="unidir" Rmetal="101" Cmetal="22.5e-15">
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<mux name="L4_mux"/>
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<sb type="pattern">1 1 1 1 1</sb>
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<cb type="pattern">1 1 1 1</cb>
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</segment>
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</segmentlist>
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<directlist>
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<direct name="carry_chain" from_pin="clb.cout" to_pin="clb.cin" x_offset="0" y_offset="-1" z_offset="0"/>
|
||||
<direct name="shift_register" from_pin="clb.reg_out" to_pin="clb.reg_in" x_offset="0" y_offset="-1" z_offset="0"/>
|
||||
<direct name="scan_chain" from_pin="clb.sc_out" to_pin="clb.sc_in" x_offset="0" y_offset="-1" z_offset="0"/>
|
||||
</directlist>
|
||||
<complexblocklist>
|
||||
<!-- Define input pads begin -->
|
||||
<pb_type name="io">
|
||||
<input name="outpad" num_pins="1"/>
|
||||
<output name="inpad" num_pins="1"/>
|
||||
<!-- Do NOT add clock pins to I/O here!!! VPR does not build clock network in the way that OpenFPGA can support
|
||||
If you need to register the I/O, define clocks in the circuit models
|
||||
These clocks can be handled in back-end
|
||||
-->
|
||||
<!-- A mode denotes the physical implementation of an I/O
|
||||
This mode will be not packable but is mainly used for fabric verilog generation
|
||||
-->
|
||||
<mode name="physical" disable_packing="true">
|
||||
<pb_type name="iopad" blif_model=".subckt io" num_pb="1">
|
||||
<input name="outpad" num_pins="1"/>
|
||||
<output name="inpad" num_pins="1"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="outpad" input="io.outpad" output="iopad.outpad">
|
||||
<delay_constant max="1.394e-11" in_port="io.outpad" out_port="iopad.outpad"/>
|
||||
</direct>
|
||||
<direct name="inpad" input="iopad.inpad" output="io.inpad">
|
||||
<delay_constant max="4.243e-11" in_port="iopad.inpad" out_port="io.inpad"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
</mode>
|
||||
|
||||
<!-- IOs can operate as either inputs or outputs.
|
||||
Delays below come from Ian Kuon. They are small, so they should be interpreted as
|
||||
the delays to and from registers in the I/O (and generally I/Os are registered
|
||||
today and that is when you timing analyze them.
|
||||
-->
|
||||
<mode name="inpad">
|
||||
<pb_type name="inpad" blif_model=".input" num_pb="1">
|
||||
<output name="inpad" num_pins="1"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="inpad" input="inpad.inpad" output="io.inpad">
|
||||
<delay_constant max="4.243e-11" in_port="inpad.inpad" out_port="io.inpad"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<mode name="outpad">
|
||||
<pb_type name="outpad" blif_model=".output" num_pb="1">
|
||||
<input name="outpad" num_pins="1"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="outpad" input="io.outpad" output="outpad.outpad">
|
||||
<delay_constant max="1.394e-11" in_port="io.outpad" out_port="outpad.outpad"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<power method="ignore"/>
|
||||
</pb_type>
|
||||
<!-- Define I/O pads ends -->
|
||||
<!-- Define general purpose logic block (CLB) begin -->
|
||||
<!-- -Due to the absence of local routing,
|
||||
the 4 inputs of fracturable LUT4 are no longer equivalent,
|
||||
because the 4th input can not be switched when the dual-LUT3 modes are used.
|
||||
So pin equivalence should be applied to the first 3 inputs only
|
||||
-->
|
||||
<pb_type name="clb">
|
||||
<input name="I0" num_pins="2" equivalent="full"/>
|
||||
<input name="I0i" num_pins="2" equivalent="none"/>
|
||||
<input name="I1" num_pins="2" equivalent="full"/>
|
||||
<input name="I1i" num_pins="2" equivalent="none"/>
|
||||
<input name="I2" num_pins="2" equivalent="full"/>
|
||||
<input name="I2i" num_pins="2" equivalent="none"/>
|
||||
<input name="I3" num_pins="2" equivalent="full"/>
|
||||
<input name="I3i" num_pins="2" equivalent="none"/>
|
||||
<input name="I4" num_pins="2" equivalent="full"/>
|
||||
<input name="I4i" num_pins="2" equivalent="none"/>
|
||||
<input name="I5" num_pins="2" equivalent="full"/>
|
||||
<input name="I5i" num_pins="2" equivalent="none"/>
|
||||
<input name="I6" num_pins="2" equivalent="full"/>
|
||||
<input name="I6i" num_pins="2" equivalent="none"/>
|
||||
<input name="I7" num_pins="2" equivalent="full"/>
|
||||
<input name="I7i" num_pins="2" equivalent="none"/>
|
||||
<input name="reg_in" num_pins="1"/>
|
||||
<input name="sc_in" num_pins="1"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<input name="reset" num_pins="1" is_non_clock_global="true"/>
|
||||
<output name="O" num_pins="16" equivalent="none"/>
|
||||
<output name="reg_out" num_pins="1"/>
|
||||
<output name="sc_out" num_pins="1"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<!-- Describe fracturable logic element.
|
||||
Each fracturable logic element has a 6-LUT that can alternatively operate as two 5-LUTs with shared inputs.
|
||||
The outputs of the fracturable logic element can be optionally registered
|
||||
-->
|
||||
<pb_type name="fle" num_pb="8">
|
||||
<input name="in" num_pins="4"/>
|
||||
<input name="reg_in" num_pins="1"/>
|
||||
<input name="sc_in" num_pins="1"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<input name="reset" num_pins="1"/>
|
||||
<output name="out" num_pins="2"/>
|
||||
<output name="reg_out" num_pins="1"/>
|
||||
<output name="sc_out" num_pins="1"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<!-- Physical mode definition begin (physical implementation of the fle) -->
|
||||
<mode name="physical" disable_packing="true">
|
||||
<pb_type name="fabric" num_pb="1">
|
||||
<input name="in" num_pins="4"/>
|
||||
<input name="reg_in" num_pins="1"/>
|
||||
<input name="sc_in" num_pins="1"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<input name="reset" num_pins="1"/>
|
||||
<output name="out" num_pins="2"/>
|
||||
<output name="reg_out" num_pins="1"/>
|
||||
<output name="sc_out" num_pins="1"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<pb_type name="frac_logic" num_pb="1">
|
||||
<input name="in" num_pins="4"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<output name="out" num_pins="2"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<!-- Define LUT -->
|
||||
<pb_type name="frac_lut4" blif_model=".subckt frac_lut4" num_pb="1">
|
||||
<input name="in" num_pins="4"/>
|
||||
<output name="lut2_out" num_pins="2"/>
|
||||
<output name="lut3_out" num_pins="2"/>
|
||||
<output name="lut4_out" num_pins="1"/>
|
||||
</pb_type>
|
||||
<pb_type name="carry_follower" blif_model=".subckt carry_follower_physical" num_pb="1">
|
||||
<input name="a" num_pins="1"/>
|
||||
<input name="b" num_pins="1"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<delay_constant max="0.3e-9" in_port="carry_follower.a" out_port="carry_follower.cout"/>
|
||||
<delay_constant max="0.3e-9" in_port="carry_follower.b" out_port="carry_follower.cout"/>
|
||||
<delay_constant max="0.3e-9" in_port="carry_follower.cin" out_port="carry_follower.cout"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="frac_logic.in[0:1]" output="frac_lut4.in[0:1]"/>
|
||||
<direct name="direct2" input="frac_logic.in[3:3]" output="frac_lut4.in[3:3]"/>
|
||||
<direct name="direct3" input="frac_logic.cin" output="carry_follower.b"/>
|
||||
<direct name="direct4" input="frac_lut4.lut2_out[1:1]" output="carry_follower.a"/>
|
||||
<direct name="direct5" input="frac_lut4.lut2_out[0:0]" output="carry_follower.cin"/>
|
||||
<direct name="direct6" input="carry_follower.cout" output="frac_logic.cout"/>
|
||||
<direct name="direct7" input="frac_lut4.lut3_out[1]" output="frac_logic.out[1]"/>
|
||||
<!-- Xifan Tang: I use out[0] because the output of lut6 in lut6 mode is wired to the out[0] -->
|
||||
<mux name="mux1" input="frac_lut4.lut4_out frac_lut4.lut3_out[0]" output="frac_logic.out[0]"/>
|
||||
<mux name="mux2" input="frac_logic.cin frac_logic.in[2:2]" output="frac_lut4.in[2:2]"/>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<!-- Define flip-flop with scan-chain capability, DI is the scan-chain data input -->
|
||||
<pb_type name="ff" blif_model=".subckt scff" num_pb="2">
|
||||
<input name="D" num_pins="1"/>
|
||||
<input name="DI" num_pins="1"/>
|
||||
<input name="reset" num_pins="1"/>
|
||||
<output name="Q" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<T_setup value="66e-12" port="ff.D" clock="clk"/>
|
||||
<T_setup value="66e-12" port="ff.DI" clock="clk"/>
|
||||
<T_setup value="66e-12" port="ff.reset" clock="clk"/>
|
||||
<T_clock_to_Q max="124e-12" port="ff.Q" clock="clk"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="fabric.in" output="frac_logic.in"/>
|
||||
<direct name="direct2" input="fabric.cin" output="frac_logic.cin"/>
|
||||
<direct name="direct3" input="fabric.sc_in" output="ff[0].DI"/>
|
||||
<direct name="direct4" input="ff[0].Q" output="ff[1].DI"/>
|
||||
<direct name="direct5" input="ff[1].Q" output="fabric.sc_out"/>
|
||||
<direct name="direct6" input="ff[1].Q" output="fabric.reg_out"/>
|
||||
<direct name="direct7" input="frac_logic.cout" output="fabric.cout"/>
|
||||
<complete name="complete1" input="fabric.clk" output="ff[1:0].clk"/>
|
||||
<complete name="complete2" input="fabric.reset" output="ff[1:0].reset"/>
|
||||
<mux name="mux1" input="frac_logic.out[0:0] fabric.reg_in" output="ff[0:0].D">
|
||||
<delay_constant max="25e-12" in_port="frac_logic.out[0:0]" out_port="ff[0:0].D"/>
|
||||
<delay_constant max="45e-12" in_port="fabric.reg_in" out_port="ff[0:0].D"/>
|
||||
</mux>
|
||||
<mux name="mux2" input="frac_logic.out[1:1] ff[0:0].Q" output="ff[1:1].D">
|
||||
<delay_constant max="25e-12" in_port="frac_logic.out[1:1]" out_port="ff[1:1].D"/>
|
||||
<delay_constant max="45e-12" in_port="ff[0:0].Q" out_port="ff[1:1].D"/>
|
||||
</mux>
|
||||
<mux name="mux3" input="ff[0].Q frac_logic.out[0]" output="fabric.out[0]">
|
||||
<!-- LUT to output is faster than FF to output on a Stratix IV -->
|
||||
<delay_constant max="25e-12" in_port="frac_logic.out[0]" out_port="fabric.out[0]"/>
|
||||
<delay_constant max="45e-12" in_port="ff[0].Q" out_port="fabric.out[0]"/>
|
||||
</mux>
|
||||
<mux name="mux4" input="ff[1].Q frac_logic.out[1]" output="fabric.out[1]">
|
||||
<!-- LUT to output is faster than FF to output on a Stratix IV -->
|
||||
<delay_constant max="25e-12" in_port="frac_logic.out[1]" out_port="fabric.out[1]"/>
|
||||
<delay_constant max="45e-12" in_port="ff[1].Q" out_port="fabric.out[1]"/>
|
||||
</mux>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="fle.in" output="fabric.in"/>
|
||||
<direct name="direct2" input="fle.reg_in" output="fabric.reg_in"/>
|
||||
<direct name="direct3" input="fle.sc_in" output="fabric.sc_in"/>
|
||||
<direct name="direct4" input="fle.cin" output="fabric.cin"/>
|
||||
<direct name="direct5" input="fabric.out" output="fle.out"/>
|
||||
<direct name="direct6" input="fabric.reg_out" output="fle.reg_out"/>
|
||||
<direct name="direct7" input="fabric.sc_out" output="fle.sc_out"/>
|
||||
<direct name="direct8" input="fabric.cout" output="fle.cout"/>
|
||||
<direct name="direct9" input="fle.clk" output="fabric.clk"/>
|
||||
<direct name="direct10" input="fle.reset" output="fabric.reset"/>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<!-- Physical mode definition end (physical implementation of the fle) -->
|
||||
<!-- Arithmetic mode definition begin -->
|
||||
<mode name="arithmetic">
|
||||
<pb_type name="soft_adder" num_pb="1">
|
||||
<input name="in" num_pins="4"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<output name="sumout" num_pins="1"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<!-- Define special LUT marco to be used as adder -->
|
||||
<pb_type name="adder_lut4" blif_model=".subckt adder_lut4" num_pb="1">
|
||||
<input name="in" num_pins="4"/>
|
||||
<output name="lut2_out" num_pins="2"/>
|
||||
<output name="lut4_out" num_pins="1"/>
|
||||
<delay_constant max="0.3e-9" in_port="adder_lut4.in" out_port="adder_lut4.lut2_out"/>
|
||||
<delay_constant max="0.3e-9" in_port="adder_lut4.in" out_port="adder_lut4.lut4_out"/>
|
||||
</pb_type>
|
||||
<pb_type name="carry_follower" blif_model=".subckt carry_follower" num_pb="1">
|
||||
<input name="a" num_pins="1"/>
|
||||
<input name="b" num_pins="1"/>
|
||||
<input name="cin" num_pins="1"/>
|
||||
<output name="cout" num_pins="1"/>
|
||||
<delay_constant max="0.3e-9" in_port="carry_follower.a" out_port="carry_follower.cout"/>
|
||||
<delay_constant max="0.3e-9" in_port="carry_follower.b" out_port="carry_follower.cout"/>
|
||||
<delay_constant max="0.3e-9" in_port="carry_follower.cin" out_port="carry_follower.cout"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="soft_adder.in[0:1]" output="adder_lut4.in[0:1]"/>
|
||||
<direct name="direct2" input="soft_adder.in[3:3]" output="adder_lut4.in[3:3]"/>
|
||||
<direct name="direct3" input="soft_adder.cin" output="carry_follower.b">
|
||||
<!-- Pack pattern to build an adder chain connection considered by packer -->
|
||||
<pack_pattern name="chain" in_port="soft_adder.cin" out_port="carry_follower.b"/>
|
||||
</direct>
|
||||
<direct name="direct4" input="adder_lut4.lut2_out[1:1]" output="carry_follower.a">
|
||||
<!-- Pack pattern to pair adder_lut4 and carry_follower into a molecule
|
||||
considered by packer -->
|
||||
<pack_pattern name="lut_follower" in_port="adder_lut4.lut2_out[1:1]" out_port="carry_follower.a"/>
|
||||
</direct>
|
||||
<direct name="direct5" input="adder_lut4.lut2_out[0:0]" output="carry_follower.cin">
|
||||
</direct>
|
||||
<direct name="direct6" input="carry_follower.cout" output="soft_adder.cout">
|
||||
<!-- Pack pattern to build an adder chain connection considered by packer -->
|
||||
<pack_pattern name="chain" in_port="carry_follower.cout" out_port="soft_adder.cout"/>
|
||||
</direct>
|
||||
<direct name="direct7" input="adder_lut4.lut4_out" output="soft_adder.sumout[0:0]">
|
||||
</direct>
|
||||
<mux name="mux1" input="soft_adder.cin soft_adder.in[2:2]" output="adder_lut4.in[2:2]">
|
||||
</mux>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="fle.in" output="soft_adder.in"/>
|
||||
<direct name="direct2" input="fle.cin" output="soft_adder.cin">
|
||||
<!-- Pack pattern to build an adder chain connection considered by packer -->
|
||||
<pack_pattern name="chain" in_port="fle.cin" out_port="soft_adder.cin"/>
|
||||
</direct>
|
||||
<direct name="direct3" input="soft_adder.sumout" output="fle.out[0:0]"/>
|
||||
<direct name="direct4" input="soft_adder.cout" output="fle.cout">
|
||||
<!-- Pack pattern to build an adder chain connection considered by packer -->
|
||||
<pack_pattern name="chain" in_port="soft_adder.cout" out_port="fle.cout"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<!-- Arithmetic mode definition end -->
|
||||
<!-- Dual 3-LUT mode definition begin -->
|
||||
<mode name="n2_lut3">
|
||||
<pb_type name="lut3inter" num_pb="1">
|
||||
<input name="in" num_pins="3"/>
|
||||
<output name="out" num_pins="2"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<pb_type name="ble3" num_pb="2">
|
||||
<input name="in" num_pins="3"/>
|
||||
<output name="out" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<!-- Define the LUT -->
|
||||
<pb_type name="lut3" blif_model=".names" num_pb="1" class="lut">
|
||||
<input name="in" num_pins="3" port_class="lut_in"/>
|
||||
<output name="out" num_pins="1" port_class="lut_out"/>
|
||||
<!-- LUT timing using delay matrix -->
|
||||
<!-- These are the physical delay inputs on a Stratix IV LUT but because VPR cannot do LUT rebalancing,
|
||||
we instead take the average of these numbers to get more stable results
|
||||
82e-12
|
||||
173e-12
|
||||
261e-12
|
||||
263e-12
|
||||
398e-12
|
||||
-->
|
||||
<delay_matrix type="max" in_port="lut3.in" out_port="lut3.out">
|
||||
235e-12
|
||||
235e-12
|
||||
235e-12
|
||||
</delay_matrix>
|
||||
</pb_type>
|
||||
<!-- Define the flip-flop -->
|
||||
<pb_type name="ff" blif_model=".latch" num_pb="1" class="flipflop">
|
||||
<input name="D" num_pins="1" port_class="D"/>
|
||||
<output name="Q" num_pins="1" port_class="Q"/>
|
||||
<clock name="clk" num_pins="1" port_class="clock"/>
|
||||
<T_setup value="66e-12" port="ff.D" clock="clk"/>
|
||||
<T_clock_to_Q max="124e-12" port="ff.Q" clock="clk"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="ble3.in[2:0]" output="lut3[0:0].in[2:0]"/>
|
||||
<direct name="direct2" input="lut3[0:0].out" output="ff[0:0].D">
|
||||
<!-- Advanced user option that tells CAD tool to find LUT+FF pairs in netlist -->
|
||||
<pack_pattern name="ble3" in_port="lut3[0:0].out" out_port="ff[0:0].D"/>
|
||||
</direct>
|
||||
<direct name="direct3" input="ble3.clk" output="ff[0:0].clk"/>
|
||||
<mux name="mux1" input="ff[0:0].Q lut3.out[0:0]" output="ble3.out[0:0]">
|
||||
<!-- LUT to output is faster than FF to output on a Stratix IV -->
|
||||
<delay_constant max="25e-12" in_port="lut3.out[0:0]" out_port="ble3.out[0:0]"/>
|
||||
<delay_constant max="45e-12" in_port="ff[0:0].Q" out_port="ble3.out[0:0]"/>
|
||||
</mux>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="lut3inter.in" output="ble3[0:0].in"/>
|
||||
<direct name="direct2" input="lut3inter.in" output="ble3[1:1].in"/>
|
||||
<direct name="direct3" input="ble3[1:0].out" output="lut3inter.out"/>
|
||||
<complete name="complete1" input="lut3inter.clk" output="ble3[1:0].clk"/>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="fle.in[2:0]" output="lut3inter.in"/>
|
||||
<direct name="direct2" input="lut3inter.out" output="fle.out"/>
|
||||
<direct name="direct3" input="fle.clk" output="lut3inter.clk"/>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<!-- Dual 3-LUT mode definition end -->
|
||||
<!-- 4-LUT mode definition begin -->
|
||||
<mode name="n1_lut4">
|
||||
<!-- Define 4-LUT mode -->
|
||||
<pb_type name="ble4" num_pb="1">
|
||||
<input name="in" num_pins="4"/>
|
||||
<output name="out" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<!-- Define LUT -->
|
||||
<pb_type name="lut4" blif_model=".names" num_pb="1" class="lut">
|
||||
<input name="in" num_pins="4" port_class="lut_in"/>
|
||||
<output name="out" num_pins="1" port_class="lut_out"/>
|
||||
<!-- LUT timing using delay matrix -->
|
||||
<!-- These are the physical delay inputs on a Stratix IV LUT but because VPR cannot do LUT rebalancing,
|
||||
we instead take the average of these numbers to get more stable results
|
||||
82e-12
|
||||
173e-12
|
||||
261e-12
|
||||
263e-12
|
||||
398e-12
|
||||
397e-12
|
||||
-->
|
||||
<delay_matrix type="max" in_port="lut4.in" out_port="lut4.out">
|
||||
261e-12
|
||||
261e-12
|
||||
261e-12
|
||||
261e-12
|
||||
</delay_matrix>
|
||||
</pb_type>
|
||||
<!-- Define flip-flop -->
|
||||
<pb_type name="ff" blif_model=".latch" num_pb="1" class="flipflop">
|
||||
<input name="D" num_pins="1" port_class="D"/>
|
||||
<output name="Q" num_pins="1" port_class="Q"/>
|
||||
<clock name="clk" num_pins="1" port_class="clock"/>
|
||||
<T_setup value="66e-12" port="ff.D" clock="clk"/>
|
||||
<T_clock_to_Q max="124e-12" port="ff.Q" clock="clk"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="ble4.in" output="lut4[0:0].in"/>
|
||||
<direct name="direct2" input="lut4.out" output="ff.D">
|
||||
<!-- Advanced user option that tells CAD tool to find LUT+FF pairs in netlist -->
|
||||
<pack_pattern name="ble4" in_port="lut4.out" out_port="ff.D"/>
|
||||
</direct>
|
||||
<direct name="direct3" input="ble4.clk" output="ff.clk"/>
|
||||
<mux name="mux1" input="ff.Q lut4.out" output="ble4.out">
|
||||
<!-- LUT to output is faster than FF to output on a Stratix IV -->
|
||||
<delay_constant max="25e-12" in_port="lut4.out" out_port="ble4.out"/>
|
||||
<delay_constant max="45e-12" in_port="ff.Q" out_port="ble4.out"/>
|
||||
</mux>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="fle.in" output="ble4.in"/>
|
||||
<direct name="direct2" input="ble4.out" output="fle.out[0:0]"/>
|
||||
<direct name="direct3" input="fle.clk" output="ble4.clk"/>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<!-- 4-LUT mode definition end -->
|
||||
<!-- Define shift register begin -->
|
||||
<mode name="shift_register">
|
||||
<pb_type name="shift_reg" num_pb="1">
|
||||
<input name="reg_in" num_pins="1"/>
|
||||
<output name="ff_out" num_pins="2"/>
|
||||
<output name="reg_out" num_pins="1"/>
|
||||
<clock name="clk" num_pins="1"/>
|
||||
<pb_type name="ff" blif_model=".latch" num_pb="2" class="flipflop">
|
||||
<input name="D" num_pins="1" port_class="D"/>
|
||||
<output name="Q" num_pins="1" port_class="Q"/>
|
||||
<clock name="clk" num_pins="1" port_class="clock"/>
|
||||
<T_setup value="66e-12" port="ff.D" clock="clk"/>
|
||||
<T_clock_to_Q max="124e-12" port="ff.Q" clock="clk"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="shift_reg.reg_in" output="ff[0].D"/>
|
||||
<direct name="direct2" input="ff[0].Q" output="ff[1].D"/>
|
||||
<direct name="direct3" input="ff[1].Q" output="shift_reg.reg_out"/>
|
||||
<direct name="direct4" input="ff[0].Q" output="shift_reg.ff_out[0:0]"/>
|
||||
<direct name="direct5" input="ff[1].Q" output="shift_reg.ff_out[1:1]"/>
|
||||
<complete name="complete1" input="shift_reg.clk" output="ff.clk"/>
|
||||
</interconnect>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="direct1" input="fle.reg_in" output="shift_reg.reg_in"/>
|
||||
<direct name="direct2" input="shift_reg.reg_out" output="fle.reg_out"/>
|
||||
<direct name="direct3" input="shift_reg.ff_out" output="fle.out"/>
|
||||
<direct name="direct4" input="fle.clk" output="shift_reg.clk"/>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<!-- Define shift register end -->
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<!-- We use direct connections to reduce the area to the most
|
||||
The global local routing is going to compensate the loss in routability
|
||||
-->
|
||||
<!-- FIXME: The implicit port definition results in I0[0] connected to
|
||||
in[2]. Such twisted connection is not expected.
|
||||
I[0] should be connected to in[0]
|
||||
-->
|
||||
<direct name="direct_fle0" input="clb.I0[0:1]" output="fle[0:0].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle0i" input="clb.I0i[0:1]" output="fle[0:0].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle1" input="clb.I1[0:1]" output="fle[1:1].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle1i" input="clb.I1i[0:1]" output="fle[1:1].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle2" input="clb.I2[0:1]" output="fle[2:2].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle2i" input="clb.I2i[0:1]" output="fle[2:2].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle3" input="clb.I3[0:1]" output="fle[3:3].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle3i" input="clb.I3i[0:1]" output="fle[3:3].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle4" input="clb.I4[0:1]" output="fle[4:4].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle4i" input="clb.I4i[0:1]" output="fle[4:4].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle5" input="clb.I5[0:1]" output="fle[5:5].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle5i" input="clb.I5i[0:1]" output="fle[5:5].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle6" input="clb.I6[0:1]" output="fle[6:6].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle6i" input="clb.I6i[0:1]" output="fle[6:6].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle7" input="clb.I7[0:1]" output="fle[7:7].in[0:1]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<direct name="direct_fle7i" input="clb.I7i[0:1]" output="fle[7:7].in[2:3]">
|
||||
<!-- TODO: Timing should be backannotated from post-PnR results -->
|
||||
</direct>
|
||||
<complete name="clks" input="clb.clk" output="fle[7:0].clk">
|
||||
</complete>
|
||||
<complete name="resets" input="clb.reset" output="fle[7:0].reset">
|
||||
</complete>
|
||||
<!-- This way of specifying direct connection to clb outputs is important because this architecture uses automatic spreading of opins.
|
||||
By grouping to output pins in this fashion, if a logic block is completely filled by 6-LUTs,
|
||||
then the outputs those 6-LUTs take get evenly distributed across all four sides of the CLB instead of clumped on two sides (which is what happens with a more
|
||||
naive specification).
|
||||
-->
|
||||
<direct name="clbouts1" input="fle[3:0].out[0:1]" output="clb.O[7:0]"/>
|
||||
<direct name="clbouts2" input="fle[7:4].out[0:1]" output="clb.O[15:8]"/>
|
||||
<!-- Shift register chain links -->
|
||||
<direct name="shift_register_in" input="clb.reg_in" output="fle[0:0].reg_in">
|
||||
<!-- Put all inter-block carry chain delay on this one edge -->
|
||||
<delay_constant max="0.16e-9" in_port="clb.reg_in" out_port="fle[0:0].reg_in"/>
|
||||
<!--pack_pattern name="chain" in_port="clb.reg_in" out_port="fle[0:0].reg_in"/-->
|
||||
</direct>
|
||||
<direct name="shift_register_out" input="fle[7:7].reg_out" output="clb.reg_out">
|
||||
<!--pack_pattern name="chain" in_port="fle[7:7].reg_out" out_port="clb.reg_out"/-->
|
||||
</direct>
|
||||
<direct name="shift_register_link" input="fle[6:0].reg_out" output="fle[7:1].reg_in">
|
||||
<!--pack_pattern name="chain" in_port="fle[6:0].reg_out" out_port="fle[7:1].reg_in"/-->
|
||||
</direct>
|
||||
<!-- Scan chain links -->
|
||||
<direct name="scan_chain_in" input="clb.sc_in" output="fle[0:0].sc_in">
|
||||
<!-- Put all inter-block carry chain delay on this one edge -->
|
||||
<delay_constant max="0.16e-9" in_port="clb.sc_in" out_port="fle[0:0].sc_in"/>
|
||||
</direct>
|
||||
<direct name="scan_chain_out" input="fle[7:7].sc_out" output="clb.sc_out">
|
||||
</direct>
|
||||
<direct name="scan_chain_link" input="fle[6:0].sc_out" output="fle[7:1].sc_in">
|
||||
</direct>
|
||||
<!-- Carry chain links -->
|
||||
<direct name="carry_chain_in" input="clb.cin" output="fle[0:0].cin">
|
||||
<!-- Put all inter-block carry chain delay on this one edge -->
|
||||
<pack_pattern name="chain" in_port="clb.cin" out_port="fle[0:0].cin"/>
|
||||
<delay_constant max="0.16e-9" in_port="clb.cin" out_port="fle[0:0].cin"/>
|
||||
</direct>
|
||||
<direct name="carry_chain_out" input="fle[7:7].cout" output="clb.cout">
|
||||
<pack_pattern name="chain" in_port="fle[7:7].cout" out_port="clb.cout"/>
|
||||
</direct>
|
||||
<direct name="carry_chain_link" input="fle[6:0].cout" output="fle[7:1].cin">
|
||||
<pack_pattern name="chain" in_port="fle[6:0].cout" out_port="fle[7:1].cin"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
<!-- Every input pin is driven by 15% of the tracks in a channel, every output pin is driven by 10% of the tracks in a channel -->
|
||||
<!-- Place this general purpose logic block in any unspecified column -->
|
||||
</pb_type>
|
||||
<!-- Define general purpose logic block (CLB) ends -->
|
||||
<!-- Define fracturable multiplier begin -->
|
||||
<pb_type name="mult_16">
|
||||
<input name="a" num_pins="16"/>
|
||||
<input name="b" num_pins="16"/>
|
||||
<output name="out" num_pins="32"/>
|
||||
<mode name="mult_8x8">
|
||||
<pb_type name="mult_8x8_slice" num_pb="2">
|
||||
<input name="A_cfg" num_pins="8"/>
|
||||
<input name="B_cfg" num_pins="8"/>
|
||||
<output name="OUT_cfg" num_pins="16"/>
|
||||
<pb_type name="mult_8x8" blif_model=".subckt mult_8" num_pb="1">
|
||||
<input name="A" num_pins="8"/>
|
||||
<input name="B" num_pins="8"/>
|
||||
<output name="Y" num_pins="16"/>
|
||||
<delay_constant max="1.523e-9" min="0.776e-9" in_port="mult_8x8.A" out_port="mult_8x8.Y"/>
|
||||
<delay_constant max="1.523e-9" min="0.776e-9" in_port="mult_8x8.B" out_port="mult_8x8.Y"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="a2a" input="mult_8x8_slice.A_cfg" output="mult_8x8.A">
|
||||
</direct>
|
||||
<direct name="b2b" input="mult_8x8_slice.B_cfg" output="mult_8x8.B">
|
||||
</direct>
|
||||
<direct name="out2out" input="mult_8x8.Y" output="mult_8x8_slice.OUT_cfg">
|
||||
</direct>
|
||||
</interconnect>
|
||||
<power method="pin-toggle">
|
||||
<port name="A_cfg" energy_per_toggle="2.13e-12"/>
|
||||
<port name="B_cfg" energy_per_toggle="2.13e-12"/>
|
||||
<static_power power_per_instance="0.0"/>
|
||||
</power>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="a2a_0" input="mult_16.a[0:7]" output="mult_8x8_slice[0].A_cfg[0:7]">
|
||||
<delay_constant max="134e-12" min="74e-12" in_port="mult_16.a[0:7]" out_port="mult_8x8_slice[0].A_cfg[0:7]"/>
|
||||
</direct>
|
||||
<direct name="a2a_1" input="mult_16.a[8:15]" output="mult_8x8_slice[1].A_cfg[0:7]">
|
||||
<delay_constant max="134e-12" min="74e-12" in_port="mult_16.a[8:15]" out_port="mult_8x8_slice[1].A_cfg[0:7]"/>
|
||||
</direct>
|
||||
<direct name="b2b_0" input="mult_16.b[0:7]" output="mult_8x8_slice[0].B_cfg[0:7]">
|
||||
<delay_constant max="134e-12" min="74e-12" in_port="mult_16.b[0:7]" out_port="mult_8x8_slice[0].B_cfg[0:7]"/>
|
||||
</direct>
|
||||
<direct name="b2b_1" input="mult_16.b[8:15]" output="mult_8x8_slice[1].B_cfg[0:7]">
|
||||
<delay_constant max="134e-12" min="74e-12" in_port="mult_16.b[8:15]" out_port="mult_8x8_slice[1].B_cfg[0:7]"/>
|
||||
</direct>
|
||||
<direct name="out2out_0" input="mult_8x8_slice[0].OUT_cfg[0:15]" output="mult_16.out[0:15]">
|
||||
<delay_constant max="1.93e-9" min="74e-12" in_port="mult_8x8_slice[0].OUT_cfg[0:15]" out_port="mult_16.out[0:15]"/>
|
||||
</direct>
|
||||
<direct name="out2out_1" input="mult_8x8_slice[1].OUT_cfg[0:15]" output="mult_16.out[16:31]">
|
||||
<delay_constant max="1.93e-9" min="74e-12" in_port="mult_8x8_slice[1].OUT_cfg[0:15]" out_port="mult_16.out[16:31]"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<mode name="mult_16x16">
|
||||
<pb_type name="mult_16x16_slice" num_pb="1">
|
||||
<input name="A_cfg" num_pins="16"/>
|
||||
<input name="B_cfg" num_pins="16"/>
|
||||
<output name="OUT_cfg" num_pins="32"/>
|
||||
<pb_type name="mult_16x16" blif_model=".subckt mult_16" num_pb="1">
|
||||
<input name="A" num_pins="16"/>
|
||||
<input name="B" num_pins="16"/>
|
||||
<output name="Y" num_pins="32"/>
|
||||
<delay_constant max="1.523e-9" min="0.776e-9" in_port="mult_16x16.A" out_port="mult_16x16.Y"/>
|
||||
<delay_constant max="1.523e-9" min="0.776e-9" in_port="mult_16x16.B" out_port="mult_16x16.Y"/>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="a2a" input="mult_16x16_slice.A_cfg" output="mult_16x16.A">
|
||||
</direct>
|
||||
<direct name="b2b" input="mult_16x16_slice.B_cfg" output="mult_16x16.B">
|
||||
</direct>
|
||||
<direct name="out2out" input="mult_16x16.Y" output="mult_16x16_slice.OUT_cfg">
|
||||
</direct>
|
||||
</interconnect>
|
||||
<power method="pin-toggle">
|
||||
<port name="A_cfg" energy_per_toggle="2.13e-12"/>
|
||||
<port name="B_cfg" energy_per_toggle="2.13e-12"/>
|
||||
<static_power power_per_instance="0.0"/>
|
||||
</power>
|
||||
</pb_type>
|
||||
<interconnect>
|
||||
<direct name="a2a" input="mult_16.a" output="mult_16x16_slice.A_cfg">
|
||||
<delay_constant max="134e-12" min="74e-12" in_port="mult_16.a" out_port="mult_16x16_slice.A_cfg"/>
|
||||
</direct>
|
||||
<direct name="b2b" input="mult_16.b" output="mult_16x16_slice.B_cfg">
|
||||
<delay_constant max="134e-12" min="74e-12" in_port="mult_16.b" out_port="mult_16x16_slice.B_cfg"/>
|
||||
</direct>
|
||||
<direct name="out2out" input="mult_16x16_slice.OUT_cfg" output="mult_16.out">
|
||||
<delay_constant max="1.93e-9" min="74e-12" in_port="mult_16x16_slice.OUT_cfg" out_port="mult_16.out"/>
|
||||
</direct>
|
||||
</interconnect>
|
||||
</mode>
|
||||
<!-- Place this multiplier block every 8 columns from (and including) the sixth column -->
|
||||
<power method="sum-of-children"/>
|
||||
</pb_type>
|
||||
<!-- Define fracturable multiplier end -->
|
||||
</complexblocklist>
|
||||
</architecture>
|
||||
Loading…
Reference in New Issue