SPRUJ53C April 2024 – February 2025 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
If the clock to the PGA is disabled while the PGA is outputting a voltage, the output voltage remains unaffected but the PGA registers are no longer updated with register writes. Enabling the clock resumes register writes.