SPRACH9G November   2021  – December 2024 AWR1443 , AWR1642 , AWR1843 , AWR2544 , AWR2944 , AWR2944P , AWR6843 , AWR6843AOP , AWRL1432 , AWRL6432 , IWR1443 , IWR1642 , IWR1843 , IWR6443 , IWR6843 , IWR6843AOP , IWRL1432 , IWRL6432

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Definitions, Abbreviations, Acronyms
  5. 2Introduction
  6. 3Serial Data FLASH Supported
    1. 3.1 AWR1243, xWR1443 ES1.0, and ES2.0 Devices
    2. 3.2 AWR294x, AWR2x44P, AWR2544, xWR1642, xWR1843, xWR6843 Devices and AWR1243, xWR1443 ES3.0 Devices
      1. 3.2.1 Prerequisite
      2. 3.2.2 ROM-Assisted Download to the FLASH (Device Management Mode - SOP5)
      3. 3.2.3 ROM-Based Load From FLASH (Functional Mode – SOP4)
      4. 3.2.4 Recommendation
    3. 3.3 Known Issues (xWR1642 ES1.0 and xWR6843 ES1.0 Devices)
    4. 3.4 Flash Variants
      1. 3.4.1 Flash Variants
  7. 4Summary
  8. 5Revision History

3.2.3 ROM-Based Load From FLASH (Functional Mode – SOP4)

The ROM bootloader performs the read from the FLASH based on the highest capability mode (quad, dual, or single) as published by the SFLASH in response to the SFDP command. The commands used are as published by the SFDP response. Thus, if the quad read is supported, the expectation is that the Quad Enable (QE) bit is already set in the FLASH. The ROM bootloader uses the quad mode to perform the read operation.