SPRZ488E March   2022  – May 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1

 

  1.   1
  2. 1Usage Notes and Advisories Matrices
  3. 2Silicon Usage Notes
    1.     i2324
    2.     i2348
    3.     i2364
  4. 3Silicon Advisories
    1.     i2310
    2.     i2311
    3.     i2313
    4.     i2329
    5.     i2345
    6.     i2346
    7.     i2347
    8.     i2349
    9.     i2350
    10.     i2352
    11.     i2353
    12.     i2354
    13.     i2355
    14.     i2356
    15.     i2357
    16.     i2358
    17.     i2359
    18.     i2374
    19.     i2375
    20.     i2386
    21.     i2392
    22.     i2393
    23.     i2394
    24.     i2395
    25.     i2401
    26.     i2402
    27.     i2403
    28.     i2404
    29.     i2405
    30.     i2427
    31.     i2428
    32.     i2433
    33.     i2438
    34.     i2439
  5.   Trademarks
  6. 4Revision History

i2394

Race condition in interrupt and error aggregator capture registers resulting in events miss

Details:

Potential race condition in capture registers resulting in events getting lost while other events in the same register are being cleared by writing to the register. Following registers are impacted by this issue:

MSS_CTRL: *INTAGG_STATUS_REG, *TPCC_ERR/INTAGG_STATUS_RAW

Workaround(s):

Follow below steps in ISR:

1) Before exiting the ISR read the *_ERRAGG_RAW and check the bit-validity by "anding" with *_ERRAGG_MASK.

2) If any bit is set that-implies there is a interrupt/Error which got missed while clearing the *_ERRAGG_STATUS.

3) Service the corresponding bit in ISR and then exit the ISR. So ISR should be exited after both STATUS and "RAW&MASK" are zero