SPRZ580 December   2024 AM62D-Q1

 

  1.   1
  2. 1Usage Notes and Advisories Matrices
    1. 1.1 Devices Supported
  3. 2Silicon Usage Notes and Advisories
    1. 2.1 Silicon Usage Notes
      1.      i2351
      2.      i2372
    2. 2.2 Silicon Advisories
      1.      i2049
      2.      i2062
      3.      i2134
      4.      i2189
      5.      i2196
      6.      i2199
      7.      i2208
      8.      i2249
      9.      i2278
      10.      i2279
      11.      i2310
      12.      i2311
      13.      i2312
      14.      i2366
      15.      i2371
      16.      i2120
      17.      i2137
      18.      i2253
      19.      i2383
      20.      i2401
      21.      i2407
      22.      i2409
      23.      i2410
      24.      i2376
      25.      i2399
      26.      i2413
      27.      i2414
      28.      i2417
      29.      i2419
      30.      i2420
      31.      i2421
      32.      i2422
      33.      i2423
      34.      i2431
      35.      i2435
  4.   Trademarks
  5.   Revision History

i2420

Boot: XSPI Boot time is not consistent in SFDP mode

Details:

When using xSPI boot with SFDP enabled (i.e. booting in DDR mode at 25Mhz) there is boot time variation across cold or warm boot. The issue is related to asynch bridge crossing in the OSPI subsystem, it is causing a race condition between:

  1. OSPI IP finishing its prefetch of data
  2. The next read transaction being submitted to the OSPI IP by the TI OSPI wrapper.
This introduces enough of a delay to cause the OSPI controller to de-assert chip select hence slowing down the overall transfer.

Workaround(s):

None