SWRZ101B December   2021  – December 2023 AM2732 , AM2732-Q1

 

  1.   1
  2.   Abstract
  3. 1Silicon Usage Notes and Advisories Matrices
    1.     Devices Supported
  4. 2 Usage Notes and Advisories
    1.     Silicon Usage Notes
      1.      i2293
      2.      i2295
      3.      i2300
      4.      i2324
      5.      i2364
      6.      i2389
      7.      i2390
    2.     Silicon Advisories
      1.      i2162
      2.      i2288
      3.      i2289
      4.      i2294
      5.      i2297
      6.      i2298
      7.      i2299
      8.      i2301
      9.      i2302
      10.      i2309
      11.      i2315
      12.      i2318
      13.      i2329
      14.      i2336
      15.      i2337
      16.      i2338
      17.      i2339
      18.      i2340
      19.      i2341
      20.      i2342
      21.      i2344
      22.      i2345
      23.      i2387
      24.      i2392
      25.      i2394
      26.      i2386
  5.   Trademarks
  6. 3Revision 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