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MSPM0G3519: MSPM0Gx51x How many FIFO locations are available for ADC on a given device variant

Eugene K
Intellectual 340 points

Part Number: MSPM0G3519
Other Parts Discussed in Thread: SYSCONFIG

Looking into MSPM0G3519 DS I see

image.png

and assuming that there are 16 MEMRESx registers and thus 8 32b FIFO locations. Sysconfig, however only shows 11. 

image.png

  1. How many  MEMRESx locations are actually available to use as ADC FIFO?
  2. What does missing ("-") A0_10 mean?

Regards,

Eugene

  • 0
    TI__Expert 8681 points

    Hi Eugene,

    There are 12 MEMRESx storage registers:

    The "-" in the cell for ADC0 Channel 10 means there is no mapped ADC channel.

    Best,

    Owen

  • 0 in reply to Owen Li
    Intellectual 340 points

    What does "no mapped ADC channel" mean? Can it be used in the context of 12 MEMRESx locations?

  • +1 in reply to Eugene K
    TI__Expert 8681 points

    Hi Eugene,

    There is no channel 10 for the ADC0 module.

    I think you may be confusing input channels with memory configurations. You can have up to 12 ADC Conversion Memory x Configurations, where you can configure an ADC channel accordingly. The SysConfig file below is from an ADC example from the SDK. There are 4 configurations utilizing MEMRES[0:3]. The Input Channel value of Channel 2 represents ADC0 Channel 2 (A0_2).

    You can use all 12 MEMRESx storage registers, however, there is no ADC0 Channel 10 that can be configured as the Input Channel for that memory configuration.

    Best,

    Owen