EP4SGX290KF40C3N Altera, EP4SGX290KF40C3N Datasheet - Page 84

• Manufacturer Part Number: EP4SGX290KF40C3N
• Description: IC STRATIX IV GX 290K 1517FBGA
• Manufacturer: Altera
• Series: Stratix® IV GXr

Specifications of EP4SGX290KF40C3N

• Number Of Logic Elements/cells: 291200
• Number Of Labs/clbs: 11648
• Total Ram Bits: 17248
• Number Of I /o: 744
• Voltage - Supply: 0.87 V ~ 0.93 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 1517-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Other names: 544-2624

4–4
Stratix IV Simplified DSP Operation
Stratix IV Device Handbook Volume 1
1
In Stratix IV devices, the fundamental building block is a pair of 18 × 18-bit
multipliers followed by a first-stage 37-bit addition/subtraction unit, as shown in
Equation 4–1
All signed numbers, input, and output data are represented in 2’s-complement format
only.
Equation 4–1. Multiplier Equation
Figure 4–2. Basic Two-Multiplier Adder Building Block
The structure shown in
such as complex multipliers and 36 × 36 multipliers, as described in later sections.
Each Stratix IV DSP block contains four two-multiplier adder units (2 two-multiplier
adder units per half block). Therefore, there are eight 18 × 18 multiplier functionalities
per DSP block.
A0[17..0]
B0[17..0]
A1[17..0]
B1[17..0]
and
Figure
P[36..0] = A
Figure 4–2
D
D
4–2.
Q
Q
0
[17..0] × B
is useful for building more complex structures,
0
[17..0] ± A
1
[17..0] × B
Chapter 4: DSP Blocks in Stratix IV Devices
+/-
1
[17..0]
Stratix IV Simplified DSP Operation
February 2011 Altera Corporation
P[36..0]