Parallel_add (parallel adder), Feature, Resource utilization and performance – Altera Integer Arithmetic IP User Manual
Page 151: Parallel_add (parallel adder) -1, Feature -1, Resource utilization and performance -1
PARALLEL_ADD (Parallel Adder)
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2014.12.19
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The PARALLEL_ADD megafunction performs add or subtract operations on a selected number of inputs
to produce a single sum result. You can add or subtract more than two operands and automatically shift
the input operands upon entering the function. The method of shifting input operands is useful for serial
FIR filter structures requiring a shift-and-accumulate of the partial products.
The following figure shows the ports for the PARALLEL_ADD megafunction.
Figure 12-1: PARALLEL_ADD Ports
data[][]
inst
PARALLEL_ADD
clock
aclr
result[]
Feature
The PARALLEL_ADD megafunction offers the following features:
• Performs add or subtract operations on a number of inputs to produce a single sum result
• Supports data width of 8–128 bits
• Supports signed and unsigned data representation format
• Supports pipelining with configurable output latency
• Supports shifting data vectors
• Supports addition or subtraction of the most-significant input operands
• Supports optional asynchronous clear and clock enable ports
Resource Utilization and Performance
The following table provides resource utilization and performance information for the PARALLEL_ADD
megafunction.
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