Timing over Packet Networks (ToPSync)
  • ACS9593T
    • ToPSync® Timing-over-packet synchronization technology slave 1588 device
  • ACS9510
    • ToPSync® Timing-over-packet synchronization technology
Semtech ACS9550

Semtech ACS9550

ToPSync® Timing-over-packet synchronization technology slave 1588 device

The ACS9550 provides standards-based timing for equipment used in packet switched networks. Control is exercised by an API. The device has a Self-Test capability that checks for defective operation prior to use.

There are many applications where it is necessary to lock a remote clock signal to a central frequency source, and there are other applications which require the alignment of a clock to a central source of time. The ACS9550 contains Semtech's ToPSync technology and, in conjunction with an appropriate PTP Grandmaster, can be used for both applications.

ToPSync technology combines the IEEE 1588 v2 protocol with Semtech's patented packet delay filtering algorithms, which allow a reference clock to be transported across a packet switched network without special adaptations of switches or routers in the network. It is ideal for carrying timing across a legacy packet switched network. Press Release >>

All ToPSync products come with a full support package including:

  • Datasheet
  • User Guide
  • Evaluation system
  • Application schematics and layouts
  • API driver code and messaging system with documentation
  • PTP Network management GUI tool
  • ToPSim network simulator and delay data analysis tool

For complete datasheet and software email Support_TOP@semtech.com.

Features


  • Fully integrated - IEEE1588 (PTP) Slave function providing reference frequency output. Time-of-Day (ToD) output andone pulse per second (PPS) output. Powerful integrated processor running clock recovery algorithm (a combination of PTP and adaptive packet delay filtering).
  • PTP Grandmaster selection - configured or automatic (according to the PTP Best Master Clock algorithm). Multiple Grandmasters supported. 
  • Powerful network delay analysis delivers full time alignment in the slave over hostile networks (including Layer 2 & 3 routed).
  • Dynamic adaptation - to delay variations. Tolerant to network loading changes (ramps and steps), routing changes and temporary outages.
  • Operational support - unicast and multicast operation.
  • Configurable DiffServ codepoint - for high priority packet routing.
  • Precision holdover.
  • Interfaces for:
    • Time-aligned output pair:
      1 PPS and 125 MHz divided by n (n = 4 to 125000).
    • Six frequency-aligned outputs:
      1 Hz and programmable frequency 1 kHz to 62.5 MHz.
    • Media Independent Interface (Ethernet port).
    • Serial peripheral interface (SPI).
    • Local oscillator (reference frequency for internal clock
      frequency).
    • SRAM port.
    • JTAG boundary scan port.
  • Supports operation with a local oscillator of frequency accuracy to ±20 ppm or better.
  • Time alignment performance better than ±1 μs on a managed 5-switch GbE network under G.8261 test conditions.*
  • Frequency alignment performance better than ±10 ppb on a managed 5-switch GbE network under G.8261 test conditions.*
  • Standard compliance - Standard compliance - IEEE 1588 v2, G.8261.
  • BGA package - 360 pin, 20 mm x 20 mm, 1 mm pitch.
  • Lead-free version available - RoHS and WEEE compliant.

* This is an indication of Semtech tested performance and is not guaranteed across all types of switches and netwok conditions. Please contact Semtech ToPSync support for further details.

Applications


Packaging

BGA (360 pin 1mm pitch)

Order Codes

  • ACS 9550: Timing-over-packet synchronization technology slave 1588 device
  • ACS9550T: Lead (Pb)-free packaged version of ACS9550. RoHS and WEEE compliant.