SPRZ576 November   2024 AM2612

ADVANCE INFORMATION  

  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. 2.2 Silicon Revision 1.0 Advisories
      1.      i2189
      2.      i2310
      3.      i2311
      4.      i2345
      5.      i2351
      6.      i2352
      7.      i2353
      8.      i2354
      9.      i2356
      10.      i2357
      11.      i2358
      12.      i2359
      13.      i2374
      14.      i2383
      15.      i2411
      16.      i2412
      17.      i2427
      18.      i2428
      19.      i2433
      20.      i2439
      21.      i2440
  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.