SPRZ544B March   2023  – December 2024 AM62A3 , AM62A3-Q1 , AM62A7 , AM62A7-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
      3.      i2424
    2. 2.2 Silicon Advisories
      1.      i2049
      2.      i2062
      3.      i2097
      4.      i2134
      5.      i2189
      6.      i2196
      7.      i2199
      8.      i2208
      9.      i2249
      10.      i2278
      11.      i2279
      12.      i2310
      13.      i2311
      14.      i2312
      15.      i2366
      16.      i2371
      17.      i2120
      18.      i2137
      19.      i2190
      20.      i2253
      21.      i2373
      22.      i2383
      23.      i2401
      24.      i2407
      25.      i2409
      26.      i2410
      27.      i2376
      28.      i2399
      29.      i2413
      30.      i2414
      31.      i2419
      32.      i2420
      33.      i2421
      34.      i2422
      35.      i2423
      36.      i2431
      37.      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