P60 IEEE 1588 Prototyping Board

Emerging applications in 4G, LTE-Advanced Infrastructure, 5G, and the migration of transmission and distribution substations towards the smart grid have been fueling the need for higher precision time synchronization. Silicon Lab’s Managed Timing Engine (MTE) board P60, is a best of breed solution for network equipment vendors looking to implement a time synchronization system using IEEE 1588 PTP packet timing to deliver a full, high performance, robust timing solution.

The P60 can operate as either a PTP ordinary clock in either master or slave mode, or as a gateway clock, in which it functions as a PTP boundary clock while also optionally accepting a time-of-day input from a GNSS receiver to allow multiple sources of time to be used simultaneously.

Pass-Through Technology

One of the innovative features of the P60 is that it can be integrated into an existing communication path. It features a low latency, fully transparent data communication channel at gigabit speed, allowing for daisy chaining architectures.

Advanced Time Recovery Algorithms

The P60 has industry leading algorithms that enable it to extract precise time from a remote master over a real-world network in which the timing packets experience packet delay variation (PDV) caused by multiple switches handling interacting traffic flows.

In addition, the P60 has cutting-edge patented technology that allows simultaneous operation with both PTP and a local GNSS-based source of time. The ability to use multiple synchronization inputs is particularly powerful in today’s applications, where a host system may need to be versatile and deployable in diverse environments.

System Features

  • IEEE 1588-2008 master. slave and gateway (boundary) clocks
  • Fully compliant to telecom, power and default profiles
  • Transparent clock support
  • ITU-T G.8261 frequency accuracy better than 10 ppb1
  • ITU-T G.8261 phase accuracy better than ±1 µs1

Network Interface

  • One Upstream/Downstream gigabit Ethernet RJ45
  • One Upstream/Downstream gigabit Ethernet SFP
  • Wire speed low latency pass-through
  • Integrated TCP/IP stack
  • PTP operation using, Ethernet, IPv4 or IPv6

1Measured in ITU-T G.8261 tests conducted at internal labs and 3rd party labs – details available on request



  • Full IEEE 1588 -2008 grandmaster, slave and gateway clock functionality
  • One-step and two-step clock capability
  • Can interwork with networks using end-to-end or peer-to-peer transparent clocks
  • Support multicast and unicast
  • 1PPS, 5, 10, 20 or 25 MHz frequency and ToD output
  • Telecom, power and default profiles
  • Fully transparent, low latency pass through traffic
  • Industry leading algorithms for accute time recovery


  • Macro eNodeBs
  • Carrier Ethernet switches and routers
  • PTP Edge Grandmasters
  • Power grid time synchronization server & client systems
  • Internet of Things & industrial precise time synchronization


  • Simple integration into host system
  • Low power consumption
  • Rapid time to market
  • Low total cost of ownership
  • Custom options for enhanced holdover performance

Technical Specifications


  • Wire speed gigabit pass-through

PTP Master

  • Accuracy with GNSS as reference better than ±25ns
  • Supports one-step and two-step operation
  • Unicast and multicast operation
  • Combined message rate (split across all slaves): 350 messages per second

PTP Slave

  • Time alignment, better than ±1 μs on a managed 10-switch GbE network under G.8261 test conditions2
  • Frequency alignment, better than ±10 ppb on a managed 10-switch gigabit Ethernet network under G.8261 test conditions2
  • Unicast and multicast operation
  • Compatible with one-step and two-step masters
  • Fifteen minutes holdover with standard TCXO

Other Features

  • DHCP client
  • FTP server
  • TELNET server
  • SSH server
  • Serial terminal
  • Remote firmware upgrade
  • Command line interface configuration (Telnet, SSH or serial port terminal)

Input Synchronization Interfaces

  • PTP: Ethernet (L2) or UDP IPv4/IPv6 (L3)
  • 1PPS
  • ToD in: TTL, 4800/9600 bps, via dedicated pin port up to 115200 bps via serial port

Output Synchronization Interfaces

  • Frequency out: 5, 10, 20 or 25 MHz
  • 1PPS
  • ToD out: TTL 4800/9600 bps on dedicated pin. Up to 115200 bps on serial port
  • PTP: Ethernet (L2) or UDP IPv4/IPv6 (L3)

ToD Format (output)

  • NMEA
  • China Mobile binary format

Other Interfaces

  • 40-pin host connector providing control interface, external reference clock support and clock input and outputs
  • SMA connectors for ToD input and output and frequency output

Operating Specifications

  • Power supply: 3.3 V or 5 V +/- 10%
  • Power consumption: 1.1 W (excluding SFP)
  • Operating temperature: 0°C to 70°C
  • RoHS & WEEE compliant
  • Size: 100 mm x 60 mm x 15/25 mm

    2 With industry standard PDV profiles of switches and network conditions.

Loading Results