SPRZ570C November   2023  – July 2025 AM263P2-Q1 , AM263P4 , AM263P4-Q1

 

  1.   1
  2.   Abstract
  3. 1Usage Notes and Advisories Matrices
  4. 2Silicon Revision 1.0 Usage Notes and Advisories
    1. 2.1 Silicon Revision 1.0 Usage Notes
      1.      i2324
      2.      i2488
    2. 2.2 Silicon Revision 1.0 Advisories
      1.      i2189
      2.      i2310
      3.      i2374
      4.      i2311
      5.      i2345
      6.      i2351
      7.      i2352
      8.      i2353
      9.      i2354
      10.      i2356
      11.      i2357
      12.      i2358
      13.      i2359
      14.      i2383
      15.      i2392
      16.      i2393
      17.      i2394
      18.      i2401
      19.      i2404
      20.      i2405
      21.      i2426
      22.      i2427
      23.      i2428
      24.      i2433
      25.      i2438
      26.      i2439
      27.      i2485
      28.      i2486
  5. 3Trademarks
  6. 4Revision History

i2439

CPSW: Host to Ethernet Timestamp Accuracy Issue

Details:

When a packet is sent from the Host to Ethernet with a timestamp to be generated on Ethernet egress, a packet length with 0xD5 in the lower 8-bits results in a timestamp error.

Using timestamp for PTP messages should not be impacted as the PTP messages are usually much shorter than 0xD5 packet length.

Workaround(s):

Ethernet timestamp should be enabled only for PTP messages on Host Tx.