Overview: Synchronization Management Unit for IEEE 1588 and 10G/40G/100G Synchronous Ethernet 82P33831
Datasheet HIGHLIGHTS
• Synchronization Management Unit (SMU) provides tools to manage physical layer and packet based synchronous clocks for IEEE 1588 / PTP Tele Profile applications
• Supports independent IEEE 1588 and Synchronous Ethernet (SyncE) timing paths
• bo mode provides SyncE physical layer frequency support for IEEE 1588 Tele Boundary Clocks (T-BC) and Tele Time Slave Clocks (T-TSC) per G.8273.2
• Digital PLL 1 (DPLL1) and DPLL 2 can be configured as Digitally Controlled Oscillators (DCOs) for PTP clock synthesis
• DCO frequency resolution is [(77760 / 1638400) * 2^-48] or ~1.686305041e-10 ppm
• DPLL1 and DPLL2 generate G.8262 pliant SyncE clocks • Two independent Time of Day (ToD) counters/time accumulators,
one associated with each of DPLL1 and DPLL2, can be used to track differences between the two time domains and to time-stamp external events • DPLL3 performs rate conversions to frequency synchronization interfaces or for other general purpose timing applications • APLL3 is Voltage Controlled Crystal Oscillator (VCXO) based and generates clocks with jitter <0.
