EP1S40B956C5 Altera, EP1S40B956C5 Datasheet - Page 574

• Manufacturer Part Number: EP1S40B956C5
• Description: IC STRATIX FPGA 40K LE 956-BGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S40B956C5

• Number Of Logic Elements/cells: 41250
• Number Of Labs/clbs: 4125
• Total Ram Bits: 3423744
• Number Of I /o: 683
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 956-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

Operational Modes
6–24
Stratix Device Handbook, Volume 2
Figure 6–13. Complex Multiplier Implemented Using Two-Multiplier Adder
Mode
Four-Multiplier Adder Mode
In the four-multiplier adder mode, which you can use for 1-dimensional
and 2-dimensional filtering applications, the DSP block adds the results
of two adder/subtractor/accumulators in a final stage (the summation
block).
1
9- & 18-Bit Summation Blocks
A single DSP block can implement one 18
blocks (see
must be the same size.
You can only use the adder block if it follows multiplication
operations.
Figure 6–14 on page
18
A
C
B
D
A
D
B
C
18
18
18
18
18
18
18
18
36
36
36
36
6–25). The multiplier product widths
Subtractor
Adder
DSP Block
37
37
18 or two 9
(Imaginary Part)
A
A
(Real Part)
C - B
D + B
Altera Corporation
D
9 summation
C
July 2005