EP1S25F780C6 Altera, EP1S25F780C6 Datasheet - Page 82
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EP1S25F780C6
Manufacturer Part Number
EP1S25F780C6
Description
IC STRATIX FPGA 25K LE 780-FBGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F780C7.pdf
(276 pages)
Specifications of EP1S25F780C6
Number Of Logic Elements/cells
25660
Number Of Labs/clbs
2566
Total Ram Bits
1944576
Number Of I /o
597
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
780-FBGA
Family Name
Stratix
Number Of Logic Blocks/elements
25660
# I/os (max)
597
Frequency (max)
450.05MHz
Process Technology
0.13um (CMOS)
Operating Supply Voltage (typ)
1.5V
Logic Cells
25660
Ram Bits
1944576
Operating Supply Voltage (min)
1.425V
Operating Supply Voltage (max)
1.575V
Operating Temp Range
0C to 85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
780
Package Type
FC-FBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
Lead Free Status / Rohs Status
Not Compliant
Other names
544-1121
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Manufacturer
Quantity
Price
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1 045
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