DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 105

• Manufacturer Part Number: DK-DEV-4SGX230N
• Description: KIT DEVELOPMENT STRATIX IV
• Manufacturer: Altera
• Series: Stratix® IVr
• Type: FPGAr

Specifications of DK-DEV-4SGX230N

• Contents: Development Board, Universal Power Supply, Cables and Software
• Silicon Manufacturer: Altera
• Core Architecture: FPGA
• Core Sub-architecture: Stratix
• Silicon Core Number: EP4S
• Silicon Family Name: Stratix IV GX
• Rohs Compliant: Yes
• For Use With/related Products: EP4SGX230K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 544-2594

Chapter 4: DSP Blocks in Stratix IV Devices
Stratix IV Operational Mode Descriptions
February 2011 Altera Corporation
To implement this complex multiplication within the DSP block, the real part
((a × c) – (b × d)) is implemented using two multipliers feeding one subtractor block
while the imaginary part ((a × d) + (b × c)) is implemented using another two
multipliers feeding an adder block.
multiplication. This mode automatically assumes all inputs are using signed
numbers.
Figure 4–16. Complex Multiplier Using Two-Multiplier Adder Mode
A
C
B
D
clock[3..0]
ena[3..0]
aclr[3..0]
Half-DSP Block
signa
signb
Figure 4–16
shows an 18-bit complex
Stratix IV Device Handbook Volume 1
36
36
Imaginary Part
A
A
x
x
Real Part
C
D
B
B
x
x
D
C
4–25