External Memory Interface Handbook Volume 3: Reference Material

ID 683841
Date 7/24/2019
Document Table of Contents

2.5.1. I/O SSM Sharing

The I/O SSM contains a hard Nios-II processor and dedicated memory storing the calibration software code and data.

When a column contains multiple memory interfaces, the hard Nios-II processor calibrates each interface serially. Interfaces placed within the same I/O column always share the same I/O SSM. The Quartus Prime Fitter handles I/O SSM sharing automatically.

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