Synchronous Ethernet SETS for 10GbE and 40GbE

The 82V3910 is a single-chip Synchronous Equipment Timing Source (SETS) for Synchronous Ethernet (SyncE). The 82V3910 complies with ITU-T G.8262 for EEC Options 1 and 2; and G.813 for SEC Options 1 and 2; it is suitable for SyncE, SONET, and SDH equipment. Its ultra-low jitter generation makes it particularly suitable for single-board systems where the SETS directly times 10GBASE-R, 10GBASE-W, OC-192/STM-64, or 40GBASE-R PHYs.

The high-integration architecture minimizes component count and board space by including a “T0” G.8262 compliant digital PLL (DPLL); and a “T4” rate converting DPLL to provide recovered line timing to a local Building Integrated Timing Supply (BITS) or Synchronization Supply Unit (SSU). Two independent jitter attenuating analog PLLs (APLLs) are also integrated; these APLLs generate clocks with jitter below 0.3ps RMS over the 10kHz to 20MHz integration range and can be used to directly time 10GbE or 40GbE network PHYs. The DPLLs lock to a wide variety of telecom and Ethernet reference frequencies and suppress incoming timing faults to generate highly reliable output clocks for optimal network performance. The T0 DPLL can lock directly to a one pulse-per-second (1 PPS) reference enabling the host system to use a low-cost GPS receiver for synchronization.

The 82V3910 offers a solution optimized for use in Ethernet switches, routers, multi-service switching platforms, wireless backhaul equipment, and other communications infrastructure. It is available in a 196-ball 15mm x 15mm CABGA package and supports the standard industrial temperature range from -40 °C to +85 °C.