Flat Spin...
It is not dependant on config as far as I know... which since one of the "functions" of the call out would be to alert you to advancing ground, a bit silly if imhibited because you forgot to configure, or were simply below MSA and descending unaware. Certainly not gear dependant, because unlikely to be down at this point.
It provides a good check that you have the correct QNH set, when relating it to airfield elevation, often in advance of any fix glidepath checks - although adjustment needs to be allowed for if terrain fluctautates between this ~8NM point and the af. Our SOPs actually require a verbal confirmation that the callout is at a sensible point when related to the servo alts.
There must be some software (as in the GPWS) to avoid nuisance calls for aircraft in the hold etc. - I frequently see the RAlt read here, but can't recall hearing the voice.
NoD