IPTR-DSPBUILDER Altera, IPTR-DSPBUILDER Datasheet - Page 234

• Manufacturer Part Number: IPTR-DSPBUILDER
• Description: DSP BUILDER SOFTWARE
• Manufacturer: Altera
• Type: DSPr

Specifications of IPTR-DSPBUILDER

• Function: DSP Builder
• License: Renewal License
• Software Application: IP CORE, DSP BUILDER
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Supported Families: Arria GX, Arria II GX, Cyclone, Stratix
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Not applicable / Not applicable

2–26
Table 2–39. Multiply Add Block Parameters
DSP Builder Standard Blockset Libraries
Number of Multipliers
Bus Type
Input [number of bits].[] >= 0
Input [].[number of bits] >= 0
Adder Mode
Pipeline Register
Use Dedicated Circuitry
One Input is Constant
Constant Values
Use Enable Port
Use Asynchronous Clear
Port
Name
Table 2–38. Multiply Add Block Inputs and Outputs
Table 2–39
Table 2–40
a0—a3
b0—b3
ena
aclr
y
2, 3, 4
Signed Integer,
Signed Fractional,
Unsigned Integer
(Parameterizable)
(Parameterizable)
Add Add, Add Sub,
Sub Add, Sub Sub
No Register, Inputs Only,
Multiplier Only, Adder Only,
Inputs and Multiplier,
Inputs and Adder,
Multiplier and Adder,
Inputs Multiplier and Adder
On or Off
On or Off
User Defined
On or Off
On or Off
Signal
shows the Multiply Add block parameters.
shows the Multiply Add block I/O formats.
Value
Input
Input
Input
Input
Output
Direction
The number multipliers you want to feed the adder.
The number format you want to use for the bus.
Specify the number of data input bits to the left of the binary point,
including the sign bit.
Specify the number of data input bits to the right of the binary
point. This option applies only to signed fractional formats.
The operation mode of the adder.
■
■
■
■
The elements to pipeline. The clock enable and asynchronous clear
ports are available only if the block is registered.
If you target devices that support DSP blocks, turn on to
implement the functionality in DSP blocks instead of with logic
elements. This option is not available if you select the Unsigned
Integer bus type.
Turn on to assign the operand b inputs to constant values. Use this
option with the Constant Values parameter but is not available
when you enable Use Dedicated Circuitry.
Type the constant values in this box as a MATLAB array. This
option is available only if One Input is Constant is on.
Turn on to use the clock enable input (ena).
Turn on to use the asynchronous clear input (aclr).
Preliminary
Operand a.
Operand b.
Optional clock enable.
Optional asynchronous clear
Result.
Add Add: Adds the products of each multiplier.
Add Sub: Adds the second product and subtracts the fourth.
Sub Add: Subtracts the second product and adds the fourth.
Sub Sub: Subtracts the second and fourth products.
Description
Description
© June 2010 Altera Corporation
Chapter 2: Arithmetic Library
Multiply Add