Knowledge Base Article

What is the correct polarity of the accum_sload and sload_accum ports of the Arria10 Altera_Mult_Add IP Core?

Description

The sload_accum port of the Arria® 10 Altera_Mult_Add IP is active high.

The accum_sload port of the Arria 10 Altera_Mult_Add IP port is active low.

This is incorrectly stated in the 2016.06.10 version of the Integer Arithmetic IP Cores User Guide:

https://www.intel.com/content/dam/altera-www/global/en_US/pdfs/literature/ug/ug_lpm_alt_mfug.pdf

Resolution

A future version of the Integer Arithmetic IP Cores User Guide will be updated to reflect the correct polarity as stated below:

sload_accum:

Dynamically specifies whether the accumulator value is

constant. If the sload_accum port is high, then the multiplier

output is loaded into the accumulator. Do not use accum_

sload and sload_accum simultaneously.

accum_sload:

Dynamically specifies whether the accumulator value is

constant. If the accum_sload port is low, then the multiplier

output is loaded into the accumulator. Do not use accum_

sload and sload_accum simultaneously.

Updated 20 days ago
Version 3.0
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