SLAAE57 June   2022 TAS2563


  1.   Abstract
  2.   Trademarks
  3. 1PDM Microphone
    1. 1.1 PDM Microphone Hardware Connections
    2. 1.2 PDM Input Function Modes
  4. 2Echo Reference
  5. 3SDOUT Data Arrangement
    1. 3.1 Data Slot
    2. 3.2 Data Enable
    3. 3.3 Data Length
  6. 4Practical Configurations Using PPC3
    1. 4.1 Tuning and Audio Processing
  7. 5References

Data Length

The bits 7–6 on register 0x08 (IVMON_LEN) set the length of the data specifically for I sense, V sense, PDM, echo reference, estimated excursion, estimated temperature, audio in and audio out. Only three of these can be output at the same time, and all of these will have the same data length based on IVMON_LEN settings. As previously mentioned in this application note, the data length is independent of slot allocation, which is always based on 8-bit slots. This means the user has to consider a higher count of slots depending on data length.