SWRZ089C December   2018  – December 2020 AWR1843

 

  1. 1Introduction
  2. 2Device Nomenclature
  3. 3Device Markings
  4. 4Usage Notes
    1. 4.1 MSS: SPI Speed in 3-Wire Mode Usage Note
  5. 5Advisory to Silicon Variant / Revision Map
  6. 6Known Design Exceptions to Functional Specifications
    1.     MSS#03
    2.     MSS#04A
    3.     MSS#05A
    4.     MSS#13
    5.     MSS#17
    6.     MSS#18
    7.     MSS#19
    8.     MSS#20
    9.     MSS#21A
    10.     MSS#22
    11.     MSS#23
    12.     MSS#24
    13.     MSS#25
    14.     MSS#26
    15.     MSS#27
    16.     MSS#28
    17.     MSS#29
    18.     MSS#30
    19.     MSS#31
    20.     MSS#32
    21.     MSS#33
    22.     MSS#34
    23.     MSS#35
    24.     MSS#37B
    25.     MSS#38A
    26.     MSS#39
    27.     MSS#40
    28.     MSS#42
    29.     MSS#43
    30.     MSS#44
    31.     MSS#45
    32.     ANA#08A
    33.     ANA#09A
    34.     ANA#10
    35.     ANA#11A
    36.     ANA#12A
    37.     ANA#13
    38.     ANA#15
    39.     ANA#16
    40.     ANA#17A
    41.     ANA#18B
    42.     ANA#20
    43.     ANA#21A
    44.     ANA#22A
    45.     ANA#24A
    46.     ANA#27
  7. 7Trademarks
  8. 8Revision History

MSS#23

HWA Read Registers Cannot be Read Reliably When the HWA is Executing a ParamSet Instruction

Revision(s) Affected:

AWR1843 ES1.0

Description:

Any read from the HWA configuration or status registers can be corrupted, if the read access is performed when the HWA is active. Reads from the HWA registers can be performed correctly, only after the execution of the entire ParamSet (i.e., after the ACC_DONE_INTR interrupt) or when the HWA is in IDLE mode waiting for the trigger to the start the execution of the next ParamSet instruction.

Workaround(s):

Perform the following:

  • Read-back of signature registers: Software needs to maintain a soft copy of the one-hot encoded signature registers and use that copy location for the EDMA programming.
  • Read-back of static registers on the HWA ParamSet interrupt. There is no reliable way to read the HWA static registers, if the HWA is active.
  • Read-back of Debug/status registers: The User can only read these registers when the HWA is not active.