EP4SGX290KF40C3N Altera, EP4SGX290KF40C3N Datasheet - Page 104

• 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

4–24
Figure 4–15. Loopback Mode for a Half DSP Block
Note to
(1) Block output for accumulator overflow and saturate overflow.
Stratix IV Device Handbook Volume 1
Figure
dataa_0[17..0]
datab_0[17..0]
dataa_1[17..0]
datab_1[17..0]
18 x 18 Complex Multiply
4–15:
zero_loopback
You can configure the DSP block to implement complex multipliers using
two-multiplier adder mode. A single half DSP block can implement one 18-bit
complex multiplier.
Equation 4–4
Equation 4–4. Complex Multiplication Equation
Half-DSP Block
loopback
clock[3..0]
ena[3..0]
aclr[3..0]
shows a complex multiplication.
(a + jb) × (c + jd) = ((a × c) – (b × d)) + j((a × d) + (b × c))
output_saturate
+
output_round
signa
signb
Chapter 4: DSP Blocks in Stratix IV Devices
Stratix IV Operational Mode Descriptions
February 2011 Altera Corporation
overflow (1)
result[ ]