EP1S10F780C6 Altera, EP1S10F780C6 Datasheet - Page 82
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EP1S10F780C6
Manufacturer Part Number
EP1S10F780C6
Description
IC STRATIX FPGA 10K LE 780-FBGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F780C7.pdf
(276 pages)
Specifications of EP1S10F780C6
Number Of Logic Elements/cells
10570
Number Of Labs/clbs
1057
Total Ram Bits
920448
Number Of I /o
426
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
780-FBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
Other names
544-1111
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Digital Signal Processing Block
2–68
Stratix Device Handbook, Volume 1
single DSP block can implement two sums or differences from two
18 × 18-bit multipliers each or four sums or differences from two 9 × 9-bit
multipliers each.
You can use the two-multipliers adder mode for complex multiplications,
which are written as:
The two-multipliers adder mode allows a single DSP block to calculate
the real part [(a × c) – (b × d)] using one subtractor and the imaginary part
[(a × d) + (b × c)] using one adder, for data widths up to 18 bits. Two
complex multiplications are possible for data widths up to 9 bits using
four adder/subtractor/accumulator blocks.
two-multipliers adder.
Figure 2–38. Two-Multipliers Adder Mode Implementing Complex Multiply
Four-Multipliers Adder Mode
In the four-multipliers adder mode, the DSP block adds the results of two
first -stage adder/subtractor blocks. One sum of four 18 × 18-bit
multipliers or two different sums of two sets of four 9 × 9-bit multipliers
can be implemented in a single DSP block. The product width for each
multiplier must be the same size. The four-multipliers adder mode is
useful for FIR filter applications.
adder mode.
(a + jb) × (c + jd) = [(a × c) – (b × d)] + j × [(a × d) + (b × c)]
18
18
18
18
A
C
B
D
A
D
B
C
18
18
18
18
18
18
18
18
36
36
36
36
Figure 2–39
Subtractor
Adder
DSP Block
Figure 2–38
shows the four multipliers
37
37
(Imaginary Part)
(A × C) − (B × D)
(A × D) + (B × C)
(Real Part)
Altera Corporation
shows an 18-bit
July 2005