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Virtex-II Platform FPGAs: Functional Description
SelectRAM Blocks
SelectRAM Blocks
SelectRAM Blocks
ds031_38_101000
Figure 34: Block SelectRAM (2-column, 4-column, and 6-column)
Table 19: Virtex-II SelectRAM Memory Available
Total Amount of SelectRAM Memory
Table 19 shows the amount of block SelectRAM memory
available for each Virtex-II device. The 18 Kbit SelectRAM
blocks are cascadable to implement deeper or wider single- or
dual-port memory resources.
Total SelectRAM Memory
Device
Blocks
96
in Kbits
1,728
2,160
2,592
3,024
in Bits
XC2V3000
XC2V4000
XC2V6000
XC2V8000
1,769,472
2,211,840
2,654,208
3,096,576
Table 19: Virtex-II SelectRAM Memory Available
120
Total SelectRAM Memory
144
Device
XC2V40
Blocks
4
in Kbits
72
in Bits
73,728
168
18-Bit x 18-Bit Multipliers
XC2V80
8
144
147,456
442,368
589,824
737,280
884,736
1,032,192
Introduction
XC2V250
XC2V500
XC2V1000
XC2V1500
XC2V2000
24
432
A Virtex-II multiplier block is an 18-bit by 18-bit 2’s comple-
ment signed multiplier. Virtex-II devices incorporate many
embedded multiplier blocks. These multipliers can be asso-
ciated with an 18 Kbit block SelectRAM resource or can be
used independently. They are optimized for high-speed
operations and have a lower power consumption compared
to an 18-bit x 18-bit multiplier in slices.
32
576
40
720
48
864
56
1,008
DS031-2 (v4.0) April 7, 2014
Product Specification
www.xilinx.com
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