SWRZ138A July   2023  – August 2024 AWRL1432

 

  1.   1
  2. 1Introduction
  3. 2Device Nomenclature
  4. 3Device Markings
  5. 4Advisory to Silicon Variant / Revision Map
  6. 5Known Design Exceptions to Functional Specifications
    1. 5.1  ANA #51
    2. 5.2  ANA #52
    3. 5.3  DIG #1
    4. 5.4  DIG #2
    5. 5.5  DIG #3
    6. 5.6  DIG #4
    7. 5.7  DIG #5
    8. 5.8  DIG #6
    9. 5.9  DIG #7
    10. 5.10 DIG #8
    11. 5.11 DIG #9
    12. 5.12 DIG #10
    13. 5.13 DIG #14
    14. 5.14 DIG #15
    15. 5.15 DIG #16
  7. 6Trademarks
  8.   Revision History

5.1 ANA #51

Continuous Wave Streaming CZ mode: Sudden jump in RX output codes every 20.97152 msec

Revision(s) Affected

AWRL1432ES1.1, ES2.0

Details

On Continuous Wave Streaming CZ mode, the Rx data shows a sudden jump in output codes every 20.97152 milliseconds.

This is not an issue in the Radar Functional mode when chirps are used. However, this issue will be seen when testing Rx chain in lab using continuous stream mode.

Workaround

In order to use Continuous stream (CW) mode for testing, it is recommended to start data capturing from the first sample itself to make sure the glitch occurs at deterministic samples. Please follow the below sequence to achieve this:

  • Configure the RDIF (Radar Data Interface)
  • Arm the DCA1000 (Data capture card)
  • Enable the continuous stream mode.

The glitch will not be seen with this sequence. For example, if the user analyzes first 20ms of data or between 21 and 41ms.