SPRZ575 March   2024 AM67 , AM67A , TDA4AEN-Q1 , TDA4VEN-Q1

 

  1.   1
  2. 1Modules Affected
  3. 2Nomenclature, Package Symbolization, and Revision Identification
    1. 2.1 Device and Development-Support Tool Nomenclature
    2. 2.2 Devices Supported
    3. 2.3 Package Symbolization and Revision Identification
  4. 3Silicon Revision 1.0 Usage Notes and Advisories
    1. 3.1 Silicon Revision 1.0 Usage Notes
      1.      i2134
    2. 3.2 Silicon Revision 1.0 Advisories
      1.      i2049
      2.      i2062
      3.      i2097
      4.      i2120
      5.      i2137
      6.      i2189
      7.      i2190
      8.      i2196
      9.      i2199
      10.      i2208
      11.      i2242
      12.      i2243
      13.      i2249
      14.      i2253
      15.      i2278
      16.      i2279
      17.      i2310
      18.      i2311
      19.      i2312
      20.      i2326
      21.      i2351
      22.      i2362
      23.      i2366
      24.      i2372
      25.      i2383
      26.      i2399
      27.      i2401
      28.      i2407
      29.      i2409
      30.      i2410
  5.   Trademarks
  6. 4Revision History

i2366

Boot: ROM does not comprehend specific JEDEC SFDP features for 8D-8D-8D operation

Details:

JEDEC spec JESD216 - SERIAL FLASH DISCOVERABLE PARAMETERS (SFDP) details the parameter table used in certain serial flash devices to describe features and how to communicate/configure the device. The ROM interprets relevant portions of the SFDP for a device's features (such as a how to change from 1S-1S-1S to 8D-8D-8D mode), but does not properly comprehend a flash device that requires:

  • A swapped byte order in 8D-8D-8D mode compared to 1S-1S-1S mode
  • A command extension that in 8D-8D-8D mode that requires a different command than the first byte sent (such as an inversion of the opcode or another unique byte)

Workaround(s):

Review the SFDP table of any candidate flash memory that is compliant with JEDEC JESD216; in most cases vendors do not publish this table and can instead be requested from the flash vendor. If the 18th DWORD of the JEDEC Basic Flash Parameter table has bit 31 with a value of "1b", then the memory must be programmed with a swapped byte order from the factory or programmed with the SoC. If bits [30:29] have a value other than "00b" then it will not work with any bootmodes in 8D-8D-8D mode. Avoid using any 8D-8D-8D bootmodes with that flash device as a result.