EP4SE530H40I3 Altera, EP4SE530H40I3 Datasheet - Page 100

• Manufacturer Part Number: EP4SE530H40I3
• Description: IC STRATIX IV FPGA 530K 1517HBGA
• Manufacturer: Altera
• Series: STRATIX® IV Er

Specifications of EP4SE530H40I3

• Number Of Logic Elements/cells: 531200
• Number Of Labs/clbs: 21248
• Total Ram Bits: 27376
• Number Of I /o: 976
• Voltage - Supply: 0.87 V ~ 0.93 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 1517-HBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

4–20
Stratix IV Device Handbook Volume 1
Double Multiplier
You can configure the Stratix IV DSP block to efficiently support a signed or unsigned
54 × 54-bit multiplier that is required to compute the mantissa portion of an IEEE
double-precision floating point multiplication. You can build a 54 × 54-bit multiplier
using basic 18 × 18 multipliers, shifters, and adders. In order to efficiently use the
Stratix IV DSP block’s built-in shifters and adders, a special double mode (partial
54 × 54 multiplier) is available that is a slight modification to the basic 36 × 36
multiplier mode, as shown in
Figure 4–12. Double Mode Shown for a Half DSP Block
dataa_0[35..18]
datab_0[35..18]
datab_0[35..18]
dataa_0[35..18]
dataa_0[17..0]
datab_0[17..0]
dataa_0[17..0]
datab_0[17..0]
clock[3..0]
ena[3..0]
aclr[3..0]
Half-DSP Block
Figure 4–12
signa
signb
+
+
and
Figure
Chapter 4: DSP Blocks in Stratix IV Devices
4–13.
+
Stratix IV Operational Mode Descriptions
February 2011 Altera Corporation
72
result[ ]