EP4SGX290KF40C3N Altera, EP4SGX290KF40C3N Datasheet - Page 105

• 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

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