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

4.1.2 Topic 2

Issue: When I change inputs to the worksheets and save the register settings, I notice that the values are the same as they were before (as shown in Figure 4-3).

GUID-BF59F449-E8E3-4EEF-8823-4A3A8C61C038-low.png Figure 4-3 Workbook Ouput Not Updating Based on User Input

Solution: Try one of the following two options:

  1. Turn on automatic formula calculations from the workbook Formulas Ribbon (as shown in Figure 4-4).
  2. Select the "Calculate Now" button from the workbook Formulas Ribbon (as shown in Figure 4-4).

GUID-21D40190-AA22-4E0D-9F90-A521B2433820-low.png Figure 4-4 Enablement of Formula Calculations

Explanation: The register settings are generated with formulas and not macros. The formulas must either be calculated automatically or by selecting the "Calculate Now" button from the workbook Formulas Ribbon.