cancel
Showing results for 
Search instead for 
Did you mean: 

RM0456 discrepancy in ADC oversampling right shift

nicolas
Senior II

In the RM0456 at 33.4.31 Oversampler it say:

The division coefficient M consists of a right bit shift up to 10 bits, and is defined using the OVSS[3:0] bits in the ADC_CFGR2 register.

But at 33.6.5 ADC configuration register 2 (ADC_CFGR2), it allow up to 11 bits:

Bits 8:5 OVSS[3:0]: Oversampling right shift
1011: 11-bit right shift

1 ACCEPTED SOLUTION

Accepted Solutions
mƎALLEm
ST Employee

Hello @nicolas ,

OVSS[3:0] supports up to 15 bit. Therefore, limit to 10 bit and reserved values in bitfield description will be removed. in RM0456.

 

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

View solution in original post

3 REPLIES 3
mƎALLEm
ST Employee

Hello @nicolas,

I will ask internally what's the correct the oversampling right shift available and fix the document accordingly.

Thank you for your contribution. Internal ticket 221624.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
mƎALLEm
ST Employee

Sorry I need to unmark the solution until an answer is provided :)

mALLEm_0-1763460142578.png

 

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
mƎALLEm
ST Employee

Hello @nicolas ,

OVSS[3:0] supports up to 15 bit. Therefore, limit to 10 bit and reserved values in bitfield description will be removed. in RM0456.

 

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.