DK-DEV-5SGXEA7/ES Altera, DK-DEV-5SGXEA7/ES Datasheet - Page 131

• Manufacturer Part Number: DK-DEV-5SGXEA7/ES
• Description: KIT DEV STRATIX V FPGA 5SGXEA7
• Manufacturer: Altera
• Series: Stratix® Vr
• Type: FPGAr

Specifications of DK-DEV-5SGXEA7/ES

• Contents: Board
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: Stratix® V 5SGXEA7
• Other names: 544-2725

Chapter 3: Variable Precision DSP Blocks in Stratix V Devices
Operational Mode Descriptions
Figure 3–12. 18
May 2011 Altera Corporation
b[24..0]
a[24..0]
d[17..0]
d[17..0]
b[24..0]
d[17..0]
a[24..0]
c[17..0]
c[17..0]
x 25 Complex Multiplier with Three Variable Precision DSP Blocks for Stratix V Devices
25
25
18
18
18
25
18
18
25
Variable Precision DSP Block 1
Variable Precision DSP Block 3
You can write an 18 x 25 complex multiplication with three variable precision DSP
blocks, as shown in
Equation 3–2. 18 × 25 Complex Multiplication Equation
Figure 3–12
DSP blocks.
Variable Precision DSP Block 2
(a + jb) × (c + jd) = (c - d) × a + (a - b) × d + j [(c + d) × b + (a - b) × d]
shows an 18 x 25 complex multiplication with three variable precision
Multiplier
Multiplier
Multiplier
Equation
x
x
x
3–2.
Stratix V Device Handbook Volume 2: Device Interfaces and Integration
Chainout
Chainout
Adder
Adder
+
+
44
44
[(c + d) b + (a - b) d]
[(c - d) a + (a - b) d]
3–15