Sigma delta ADC implementation for MPC5777C

[Amrit1]

Hi,

I currently have a COSINE differential signal connected to ANA16_SDB0 (COS_HI) and ANA17_SDB1 (COS_LO) of MPC5777C. Could you please guide me on how to implement Sigma delta ADC (SDADC) module so that we can get a single ADC counts for the COS signal. Any sample code would be highly helpful to understand the registers to be configured for this specific case?

[davidtosenovjan · Accepted solution]

I can offer following examples:

https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5777C-SDADC-simple-GHS614/ta-p/112027...

https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/Example-MPC5777C-SDADC-eTPU-triggered-GHS714/ta-...

In your case it is needed to redefine pin settings, SDADC_MCR and CSR registers