P50 - IEEE 1588 Sub-System

Conemtech M50 P50 IEEE 1588 Sub-System


  • IEEE 1588-2008 Grandmaster or Ordinary Clock with three different oscillator alternatives: IC internal, TCXO, OCXO
  • Grandmaster operation with PPS and ToD input from GPS or other Time Source
  • PPS, ToD and syntonized frequency output
  • Compact OEM design.


  • Two Ethernet 10/100 RJ-45 connectors with auto sensing PHYs
  • Second Ethernet also available on MII/RMII connector
  • Three asynchronous serial ports
  • SPI port
  • Debug port
  • Three internal oscillator alternatives, one external input
  • PPS and ToD input from GPS or other time source, for Grandmaster mode
  • PPS and ToD inputs and outputs plus a syntonized frequency output
  • Time and Frequency signals available on five SMA coaxial connectors.


The P50 is intended for the development of compact Grandmasters, high precision slaves or general ordinary clocks in the IEEE1588 network. It is based on the C34 microcontroller located on an M50-34 subsystem-module.

The functionality of the system is delivered by the C34 controller which is a dedicated device for time synchronized applications. Its outstanding features stem from its ability to analyze and act on gate level, in real time.

The system has the ability to sustain processing of almost 20 Mbit/s of IP dataflow, while running the IEEE 1588 Protocol software in the background. The M50-34 module embeds a complete software platform including real-time operating system, flash file system, TCP/IP communication stack, FTP and telnet server. For the execution of the IEEE1588-2008 protocol, a software stack with fully compliant Ordinary Clock implementation is integrated. The development environment enables the application designer to manage projects with configurations for different clock modes and precisions.

Block Diagram

P50 Block Diagram

The P50 is designed for an optimized IEEE 1588 communication application and the Grandmaster mode. The standard P50 comes set with an on board TCXO oscillator, but the socket board can be adapted for different oscillators: on-module, on-board, external. The kit has an optional input for an external reference (eg. GPS).

A host system interfaces to the board via the SPI port and a separate debug port connects to the development system via the trace adapter.

Technical Specifications

  • Processor: Qulsar C34 a on a M50 module, 8 MB SDRAM, 2 MB Flash
  • Standard oscillator: voltage-controlled, temperature compensated CFPT-125TS with
    0.9 ppm temperature stability (-20 to 70oC)
  • Input/Output: 40-pin connector with serial interfaces, timing signals etc
  • ToD and PPS input/output and synthonized frequency also available on SMA coax
  • Serial interface: three High Speed serial RS232 interfaces (CMOS level)
  • Ethernet: two 10/100 Base-T with auto sensing PHYs and RJ-45 connectors, second also as RMII
  • Clock frequency: 150 MHz
  • Supply Voltage: 3.3 or 5V
  • Overall Dimensions: 100 x 60 x 15 mm
  • Operating Temperature: 0 – +70 °C
  • RoHS compliant.

Ordering Information

  • C34 integrated circuit (BGA180)
  • M50-34 processor module with C34
  • P50 assembled OEM board with M50
  • DK5 development kit and design system, one channel, P50 base

Qulsar may make changes to specifications and product descriptions in this document at any time, without notice.

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