Section 4 Layout:
1-bit circuit layout:
Size of the 3-bit Absolute Difference Value calculator: 31.440 um * 26.820um=843 um^2
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3-bit circuit layout:
The layout of the 4-bit accumulator is shown below. The Cout1, Cout2, Cout3 of previous bit and Cin1, Cin2, Cin3 of following bit are connected, respectively. The Cout3 of final bit is connected with D3 of previous bits.
Size of the 3-bit Absolute Difference Value calculator: 31.660 um * 95.580um =0.03 mm^2
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Section 5: Layout Functionality Verification (IRSIM and HSPICE)
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