Given a network of four microcontrollers with the following

Given a network of four microcontrollers with the following oscillators:

f₁ = 4 MHz ± 10 PPM

f₂ = 4 MHz ± 100 PPM

f₃ = 4 MHz ± 120 PPM

f₄ = 4 MHz ± 50 PPM

a) Given a maximum allowable offset (precision) of what is the maximum resynchronization interval that is required?

b) What is meant by the “Convergence Function”?

Solution

a] T=10^5/10=10000s

b] A convergence function is denotes the offset of the tome values immediately after the resynchronization