DLPS074 February 2017 DLPC4422
PRODUCTION DATA.
TI strongly recommends that the VDD18_PLLD, VDD18_PLLM1, and VDD18_PLLM2 power feeding internal PLLs be derived from an isolated linear regulator in order to minimize the AC Noise component. It is acceptable for VDD11_PLLD, VDD11_PLLM1, VDD11_PLLM2, and VDD11_PLLS to be derived from the same regulator as the core VDD11, but they should be filtered.