In the TDA4VM data sheet, it mentions that if we use Ethernet RGMII, the frequency accuracy should be ±50 ppm for WKUP_OSC0 and OSC1. It also specially remind that the system design must consider the temperature and aging characteristics of the crystal.
So what I want to ask is:
Does the frequency accuracy ±50ppm is the totally tolerance requirement, including frequency tolerance/ frequency stability/ aging, or it is the requirement for frequency tolerance?
Please kindly comment.
Thanks a lot.
