External Memory Interface Handbook Volume 3: Reference Material

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

2.4.3. Stratix® 10 EMIF Architecture: I/O SSM

Each column includes one I/O subsystem manager (I/O SSM), which contains a hardened Nios II processor with dedicated memory. The I/O SSM is responsible for calibration of all the EMIFs in the column.

The I/O SSM includes dedicated memory which stores both the calibration algorithm and calibration run-time data. The hardened Nios II processor and the dedicated memory can be used only by an external memory interface, and cannot be employed for any other use. The I/O SSM can interface with soft logic, such as the debug toolkit, via an Avalon-MM bus.

The I/O SSM is clocked by an on-die oscillator, and therefore does not consume a PLL.

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