The invention relates to the technical field of high-speed digital interfaces, and discloses a JESD204B multi-device deterministic
delay synchronization system and method based on dynamic
clock phase compensation, and the
system comprises a main node which generates and dynamically distributes
clock signals, and constructs a dynamic
clock tree structure; the slave equipment is used for realizing
cascade error
elimination through a distributed compensation mechanism; the dynamic
phase compensation engine adopts a
hybrid phase detection framework and is combined with a digital-to-time converter (TDC) and an analog phase-locked loop (PLL); and the environment parameter compensation module is used for collecting temperature,
voltage and
operation time in real time, and calculating
phase compensation quantity through a formula that
delta phi = alpha * (T-T0) + beta * (V-V0) + gamma *
delta t. On the aspect of synchronization precision, the
phase error of a single device can be smaller than or equal to + / -200ps, the strict scene requirement is effectively met, the environment adaptability is high, the defects of traditional fixed compensation can be overcome,
cascade error accumulation can be efficiently restrained through distributed compensation of slave devices, and on the aspect of real-time performance, an online calibration module can conduct real-time calibration without interrupting services.