what's the real function of DSADC's MFSC ?

[User17818]

hi.

Background Information:

Document: TC27x D-Step
Page: 4107 or 26-64

Delta-Sigma Analog-to-Digital Converter (DSADC)

FCFGCx (x = 0 - 5)
Filter Configuration Register x, Main CIC Filter
__________________________________________________________________________________________
| MFSC | [13:12] | rw | Main Filter Shift Control
| | | | Selects the displacement caused by the data shifter at the main CIC filter output.
| | | | 00B No shift, use full range
| | | | 01B Shift by 1
| | | | 10B Shift by 2
| | | | 11B Shift by 3
------------------------------------------------------------------------------------------------------------------------------------------------------

Q1: If MFSC = 11B and the main CIC filter's original output = 8,
After the displacement caused by the data shifter, the final output = (8>>3) = 1?

thx.

[User21153]

Do you have any idea now? I'm also wondering how the data shifter works. There's too little description about it in the documentation.