IEEE 1588 Software Combined with Renesas’ Leading Timing Silicon for a Comprehensive Timing Solution with Increased Flexibility and Excellent Packet Delay Variation

February 2, 2021

TOKYO, Japan ― Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced semiconductor solutions, today introduced PTP (Precision Time Protocol) Clock Manager, the industry’s first Linux-based clock management software, providing an easy-to-use and accessible timing synchronization solution for telecom networks, including 4G, 5G, and open radio access network (O-RAN), including both fronthaul and backhaul systems.

The new IEEE 1588 Renesas PTP Clock Manager includes APIs to connect Renesas timing ICs with any network processor via the Linux standard PTP stack, offering broad access to PTP synchronization without the need for time-intensive customization. This time stamp unit (TSU)-agnostic approach provides customers access to their processor/clock combination of choice and eliminates the need to create their own APIs, allowing them greater design flexibility while reducing development costs. When used with Renesas clock solutions, the PTP Clock Manager is provided under a “no fees” license.

“Timing precision becomes more critical as carriers migrate to 5G networks. The open-source Linux environment offers the flexibility to create IEEE 1588-aware systems with a TSU and clock combination of choice for optimum timing performance,” said Bobby Matinpour, Vice President, Data Center Business Division at Renesas. “Providing PTP synchronization alongside a suite of best-in-class timing solutions without license fees reshapes the network system development landscape. We are excited to continue driving innovation that fosters and enables new vendors to succeed, consistent with initiatives like O-RAN.”

“We are collaborating closely with Renesas to develop joint reference designs that help to simplify and accelerate the time to market for our customers,” said Gilles Garcia, Senior Director of Marketing, Wired and Wireless Group, Xilinx, Inc. “5G networks demand high accuracy 1588 PTP for time and phase synchronization. Renesas’ PTP Clock Manager is an important enabler for our Versal AI Core Series VCK190 and Zynq UltraScale+ RFSoC ZCU216 evaluation kits, along with Xilinx Ethernet Solutions.”

The new Linux-based PTP Clock Manager also works with Renesas’ ClockMatrix™ 8A3400x family of high-performance, precision, multi-channel timing devices and IEEE 1588-compliant 82P339xx devices to simplify the integration of telecom PTP solutions.

Key Features of the PTP Clock Manager

  • Extremely effective packet delay variation (PDV) filter for IEEE 1588 networks
  • Linux kernel PHC subsystem supports Renesas ClockMatrix timing devices
  • Backwards compatibility with Linux v3.0 or later
  • Reduces the impact of packet-delayed variations caused by random queuing delays
  • Enables worldwide compliance with ITU-T synchronization recommendations
  • Available as clear source code to simplify debugging

As the market leader in silicon timing, Renesas offers the only “one-stop-shop” for timing solutions, offering expertise and products from full-featured system solutions to simple clock building-block devices. The new PTP clock manager extends this comprehensive portfolio to include both silicon and software solutions to support a full range of clocking needs.


The Linux-based PTP Clock Manager is available now free of charge under license. For more information, please visit

About Renesas Electronics Corporation

Renesas Electronics Corporation (TSE: 6723) delivers trusted embedded design innovation with complete semiconductor solutions that enable billions of connected, intelligent devices to enhance the way people work and live. A global leader in microcontrollers, analog, power, and SoC products, Renesas provides comprehensive solutions for a broad range of automotive, industrial, infrastructure, and IoT applications that help shape a limitless future. Learn more at Follow us on LinkedIn, Facebook, Twitter, and YouTube.

(Remarks). ClockMatrix is a trademark of Renesas Electronics Corporation. All other names of products or services mentioned in this press release are trademarks or registered trademarks of their respective owners.

The content in the press release, including, but not limited to, product prices and specifications, is based on the information as of the date indicated on the document, but may be subject to change without prior notice.

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