* Add notes about FGA resources from dry-run on Spartan-6.
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README.txt
22
README.txt
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@ -105,7 +105,8 @@ These two wrappers are the only tested variants of the core.
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Accuracy of the sine/cosine output from the cores has been determined from
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a simulation of the VHDL code on all possible phase input values.
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----
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--
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Core variant sincos_gen_d18_p20 sincos_gen_d24_p26
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Phase input width 20 bits 26 bits
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Sin/cos output width 18 bits 24 bits
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@ -122,10 +123,27 @@ Spurious-free dynamic range 129.81 dB
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cos(x) == sin(x+pi/2) exact match
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sin(x) == - sin(x+pi) exact match
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----
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--
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FPGA resources
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--------------
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--
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FPGA type Xilinx Spartan-6 LX45-3
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Synthesizer Xilinx ISE 14.7
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Core variant d18_p20 d24_p26
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Flip-flops 134 250
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LUTs 136 211
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RAMB16BWER 2 2
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RAMB8BWER 0 2
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DSP48A1 2 4
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Clock freq 230 MHz 230 MHz
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--
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