External Memory Interface Handbook Volume 2: Design Guidelines

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ID 683385
Date 5/08/2017
Public
Document Table of Contents

9.6.2.2. I/O Timing9.6.3.2. I/O Timing

I/O timing analysis includes analysis of read capture, write, address and command, DQS gating, and write leveling.

The TimeQuest Timing Analyzer provides a breakdown of the timing budgets which details margin loss due to transmitter, receiver, and channel. TimeQuest displays the total margin in the last row of the timing report.

The I/O timing analysis described in the following topics is based on a 2 speed-grade device, interfacing with a DDR3 SDRAM UDIMM at 1066 MHz. A 1066 MHz DDR3 SDRAM UDIMM is used for the analysis.

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