Mainly used to implement arithmetic logic functions and exists in each slide and runs along each column of CLBs as well as the top and bottom CLBs.
FPGA Spartan-3 Family 5M Gates 74880 Cells 630MHz 90nm Technology 1.2V 676-Pin FBGA
FPGA Spartan-IIE Family 50K Gates 1728 Cells 357MHz 0.15um Technology 1.8V 208-Pin HSPQFP EP
FPGA Spartan Family 5K Gates 238 Cells 166MHz 5V 100-Pin VTQFP
FPGA Spartan-3E Family 500K Gates 10476 Cells 572MHz 90nm Technology 1.2V 132-Pin CSBGA
FPGA Spartan-3E Family 500K Gates 10476 Cells 572MHz 90nm Technology 1.2V 320-Pin FBGA
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