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CDPCLK4 Scheda tecnica(PDF) 54 Page - Altera Corporation

Il numero della parte CDPCLK4
Spiegazioni elettronici  Cyclone III Device Handbook
PDF  274 Pages
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Produttore elettronici  ALTERA [Altera Corporation]
Homepage  http://www.altera.com
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CDPCLK4 Scheda tecnica(HTML) 54 Page - Altera Corporation

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4–2
Chapter 4: Embedded Multipliers in the Cyclone III Device Family
Embedded Multiplier Block Overview
Cyclone III Device Handbook
December 2011
Altera Corporation
Volume 1
Embedded Multiplier Block Overview
Figure 4–1 shows one of the embedded multiplier columns with the surrounding logic
array blocks (LABs). The embedded multiplier is configured as either one 18 × 18
multiplier or two 9 × 9 multipliers. For multiplications greater than 18 × 18, the
Quartus® II software cascades multiple embedded multiplier blocks together. There
are no restrictions on the data width of the multiplier, but the greater the data width,
the slower the multiplication process.
Table 4–1 lists the number of embedded multipliers and the multiplier modes that can
be implemented in the Cyclone III device family.
Figure 4–1. Embedded Multipliers Arranged in Columns with Adjacent LABs
Embedded
Multiplier
Embedded
Multiplier
Column
1 LAB
Row
Table 4–1. Number of Embedded Multipliers in the Cyclone III Device Family
Device Family
Device
Embedded Multipliers
9
× 9 Multipliers (1)
18
× 18 Multipliers (1)
Cyclone III
EP3C5
23
46
23
EP3C10
23
46
23
EP3C16
56
112
56
EP3C25
66
132
66
EP3C40
126
252
126
EP3C55
156
312
156
EP3C80
244
488
244
EP3C120
288
576
288
Cyclone III LS
EP3CLS70
200
400
200
EP3CLS100
276
552
276
EP3CLS150
320
640
320
EP3CLS200
396
792
396
Note to Table 4–1:
(1) These columns show the number of 9 × 9 or 18 × 18 multipliers for each device. The total number of multipliers for each device is not the sum
of all the multipliers.



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