XC2VP20-6FF1152C Xilinx, Inc., XC2VP20-6FF1152C Datasheet - Page 30

• Manufacturer Part Number: XC2VP20-6FF1152C
• Description: Pro Platform FPGA
• Manufacturer: Xilinx, Inc.

Functional Description: FPGA
Configurable Logic Blocks (CLBs)
The Virtex-II Pro configurable logic blocks (CLB) are orga-
nized in an array and are used to build combinatorial and
synchronous logic designs. Each CLB element is tied to a
switch matrix to access the general routing matrix, as
shown in
slices, with fast local feedback within the CLB. The four
slices are split in two columns of two slices with two inde-
pendent carry logic chains and one common shift chain.
30
Switch
Matrix
Figure 20: Virtex-II Pro CLB Element
Figure
TBUF
TBUF
20. A CLB element comprises 4 similar
X0Y1
X0Y0
Slice
Slice
COUT
CIN
SHIFT
X1Y1
X1Y0
Slice
Slice
COUT
CIN
DS083-2_32_122001
Fast
Connects
to neighbors
www.xilinx.com
1-800-255-7778
Slice Description
Each slice includes two 4-input function generators, carry
logic, arithmetic logic gates, wide function multiplexers and
two storage elements. As shown in
function generator is programmable as a 4-input LUT, 16
bits of distributed SelectRAM memory, or a 16-bit vari-
able-tap shift register element.
Figure 21: Virtex-II Pro Slice Configuration
RAM16
RAM16
SRL16
SRL16
LUT
LUT
G
F
Arithmetic Logic
MUXF5
MUXFx
DS083-2 (v1.0) January 31, 2002
CY
CY
ORCY
Advance Product Specification
Figure
Register/
Register/
Latch
Latch
DS083-2_31_122001
21, each 4-input
R