XC2VP70 Xilinx, Inc., XC2VP70 Datasheet - Page 40

• Manufacturer Part Number: XC2VP70
• Description: Virtex-ii Pro Field Programmable Gate Array
• Manufacturer: Xilinx, Inc.

Sum of Products
Each Virtex-II Pro slice has a dedicated OR gate named
ORCY, ORing together outputs from the slices carryout and
the ORCY from an adjacent slice. The ORCY gate with the
dedicated Sum of Products (SOP) chain are designed for
LUTs and MUXCYs can implement large AND gates or
other combinatorial logic functions.
DS083-2 (v2.9) October 14, 2003
Advance Product Specification
4
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R
LUT
LUT
LUT
LUT
4
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4
MUXCY
MUXCY
MUXCY
MUXCY
ORCY
Slice 1
Slice 0
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CC
4
4
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4
LUT
LUT
LUT
LUT
LUT
LUT
Figure 35: Wide-Input AND Gate (16 Inputs)
LUT
LUT
Figure 35
Figure 34: Horizontal Cascade Chain
MUXCY
MUXCY
MUXCY
MUXCY
ORCY
Slice 3
Slice 2
V
illustrates
CC
“0”
“0”
“0”
CLB
0
0
0
0
MUXCY
MUXCY
MUXCY
MUXCY
www.xilinx.com
1-800-255-7778
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1
1
1
1
CC
4
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Slice
Slice
implementing large, flexible SOP chains. One input of each
ORCY is connected through the fast SOP chain to the output
of the previous ORCY in the same slice row. The second input
is connected to the output of the top MUXCY in the same slice,
as shown in
LUT and MUXCY resources configured as a 16-input AND
gate.
Virtex-II Pro™ Platform FPGAs: Functional Description
LUT
LUT
LUT
LUT
OUT
MUXCY
MUXCY
MUXCY
MUXCY
Figure
ORCY
Slice 0
Slice 1
V
CC
34.
16
4
4
4
4
LUT
LUT
LUT
LUT
AND
DS031_41_110600
MUXCY
MUXCY
MUXCY
MUXCY
OUT
ORCY
Slice 3
Slice 2
V
CC
CLB
ds031_64_110300
SOP
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