SPRACU8B August   2021  – January 2023 AM68 , AM68 , AM68A , AM68A , AM69 , AM69 , AM69A , AM69A , DRA821U , DRA821U , DRA829V , DRA829V , TDA4VM , TDA4VM

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
    1. 1.1 Features
      1. 1.1.1 Supported Features (version 0.10.0)
      2. 1.1.2 Unsupported Features (version 0.10.0)
    2. 1.2 Spreadsheet Overview
      1. 1.2.1 Input Worksheets
      2. 1.2.2 Output Worksheets
      3. 1.2.3 Other Worksheets
    3. 1.3 Default SDK Configurations
  4. 2Customizing DDR Configuration
    1. 2.1 Config Worksheet
      1. 2.1.1 System Configuration
      2. 2.1.2 Memory Burst Configuration
    2. 2.2 DRAMTiming Worksheet
      1. 2.2.1 Latency Parameters
      2. 2.2.2 Non-Latency Parameters
    3. 2.3 IO Control Worksheet
      1. 2.3.1 Determining IO Settings
      2. 2.3.2 Processor/DDR Controller IO
      3. 2.3.3 DRAM I/O
  5. 3Software Considerations
    1. 3.1 Updating U-Boot
      1. 3.1.1 Updating DDR Register Settings
      2. 3.1.2 Updating Source to Set Available Memory Size
    2. 3.2 Updating RTOS PDK
      1. 3.2.1 Updating DDR Register Settings
  6. 4Troubleshoot Guide
    1. 4.1 Topics/Issues
      1. 4.1.1 Topic 1
      2. 4.1.2 Topic 2
      3. 4.1.3 Topic 3
  7. 5References
  8.   Revision History

Abstract

At the center of every application is the need for memory. With limited on-chip processor memory, external memory serves as a solution for large software systems and data storage, and an unstable external memory interface can result in system failures or hinder software development. To prevent potential system level anomalies and ensure robust systems, hardware must be configured correctly and tested thoroughly.

The Jacinto 7 DDRSS Register Configuration Tool focuses on post layout activities, and provides a simplified solution to configure the Texas Instruments (TI) Jacinto 7 processors for accessing the specific double data rate (DDR) memory part number that is selected for a system. This document provides a detailed description on how to use the associated application files to generate appropriate register settings for a unique system and memory component, updating the source code of supported software development kits (SDKs), and address common questions or issues that may arise. The document introduction provides a complete list of processors and memory types supported by the Jacinto 7 DDRSS Register Configuration Tool.

The spreadsheet discussed in this document can be downloaded from the following URL: https://www.ti.com/lit/zip/spracu8.

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