The solution is based on the Marvell Alaska C family of high-speed Ethernet transceivers, Silicon Labs’ Si5348 low-jitter network synchronizer clock and the Calnex Paragon-100G test platform. 4G and 5G networks have stringent requirements for phase and frequency synchronization to mitigate interference and more effectively share user bandwidth between adjacent cell sites and mobile backhaul and fronthaul networks will use a combination of IEEE 1588 and SyncE to distribute phase and frequency synchronization across the network. The joint Silicon Labs and Marvell solution enables equipment providers to extend SyncE to their highest speed backhaul and fronthaul networks and design with confidence using a proven solution for packet network synchronization. It uses Silicon Labs’ Si5348 low-jitter network synchronizer in combination with the Marvell Alaska C 88X5123 and 88X5113 25GbE/100GbE industrial temperature-capable Ethernet transceivers. The Si5348 synchronizer has an industry-leading jitter performance of 100 fs rms (typ) which helps minimize system-level bit-error rates. The device supports three fully independent frequency flexible DSPLLs, enabling a single clock IC to support SyncE clock synchronization and clock generation as well as general-purpose timing for FPGAs, processors and other devices.
The solution was tested using the Calnex Paragon-100G, a fully SyncE-compliant test platform that provides automated wander, jitter, transient and IEEE-1588 precision time protocol testing with industry-leading measurement precision. It was fully tested for compliance with ITU-T G.8262, showing significant margin to G.8262 Ethernet Equipment Clock (EEC) Option 1 and Option 2 jitter generation and jitter tolerance requirements.