SWRZ099B April   2020  – March 2022 AWR6843AOP

 

  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#25
    2.     MSS#26
    3.     MSS#27
    4.     MSS#28
    5.     MSS#29
    6.     MSS#30
    7.     MSS#31
    8.     MSS#32
    9.     MSS#33
    10.     MSS#34
    11.     MSS#36
    12.     MSS#37B
    13.     MSS#38A
    14.     MSS#39
    15.     MSS#40
    16.     MSS#41
    17.     MSS#42A
    18.     MSS#43A
    19.     MSS#44A
    20.     MSS#45
    21. 6.1 MSS#50
    22. 6.2 MSS#51
    23.     ANA#11B
    24.     ANA#12A
    25.     ANA#13B
    26.     ANA#14
    27.     ANA#16
    28.     ANA#17A
    29.     ANA#18B
    30.     ANA#19
    31.     ANA#20
    32.     ANA#22A
    33.     ANA#27A
    34.     ANA#30
    35.     ANA#31
    36.     PACKAGE#02
  7. 7Trademarks
  8. 8Revision History

MSS#39

The state of the MSS DMA is left pending and uncleared on any DMA MPU fault

Revision(s) Affected:

AWR6843AOP ES2.0

Description:

The state of the MSS DMA is left pending and uncleared on any DMA MPU fault. The transfer that caused this MPU fault is left pending inside the DMA IP.

Any trigger on DMA REQ lines (could be caused by any module/IP that is hooked up to DMA in h/w) can re-trigger DMA to start executing the above pending transfer irrespective of whether that trigger is actually valid/enabled in DMA or that module/IP

Workaround(s):

For devices where the Boot ROM is executing the MSS DMA MPU Self tests. As part of application initialization, if the MSS DMA will be used, the following register field should be used to reset the MSS DMA IP so that the uncleared transfer is reset

  1. Write MSS_RCM:SOFTRST1[31:24] 0xAD
  2. Write MSS_RCM:SOFTRST1[31:24] 0x0

It is not recommended to use this configuration at any another instance other than that recommended here in this Errata.

On an actual Real time MPU Error, this error should be treated as a non-recoverable error and a warm reset should be issued to recover.