The 8A34002 System Synchronizer for IEEE 1588 generates ultra-low jitter; precision timing signals based on the IEEE 1588 Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE). The device can be used as a single timing and synchronization source for a system or two of them can be used as a redundant pair for improved system reliability. Digitally Controlled Oscillators (DCOs) are available to be controlled by IEEE 1588 clock recovery servo software running on an external processor. The device supports physical layer timing with Digital PLLs (DPLLs) and other timing blocks necessary to implement a Synchronous Equipment Timing Source (SETS) for SyncE. The DCOs can be controlled using IEEE 1588 information alone, or they can combine IEEE 1588 time information with physical layer frequency information from SyncE in accordance with ITU-T G.8273.2. The device can be used to actively measure and compensate for clock propagation delays across backplanes and across circuit boards to ensure the distribution of accurate time and phase with minimal time error between IEEE 1588 Time Stamp Units (TSUs) in a system. The device supports multiple independent channels that control: IEEE 1588 clock synthesis; SyncE clock generation; jitter attenuation and universal frequency translation.  Input-to-input, input-to-output and output-to-output phase skew can all be precisely managed. The device outputs ultra-low-jitter clocks that can directly synchronize SERDES running at up to 28Gbps; as well as CPRI/OBSAI, SONET/SDH and PDH interfaces and IEEE 1588 TSUs.

To see other devices in this product family, visit the ClockMatrix Timing Solutions page.
To easily implement synchronization in IEEE 1588 systems, Renesas offers PTP Clock Manager Software for free under license.


  • Four independent timing channels
  • Jitter output below 150fs RMS (typical)
  • Digital PLLs (DPLLs) lock to any frequency from 0.5Hz to 1GHz
  • DPLLs / Digitally Controlled Oscillators (DCOs) generate any frequency from 0.5Hz to 1GHz
  • DCO outputs can be aligned in phase and frequency with the outputs of any DPLL or DCO
  • DPLLs comply with ITU-T G.8262 for Synchronous Ethernet (SyncE)
  • IEEE 1588 Support:
    • DCOs can be controlled by external IEEE 1588 software to synthesize Precision Time Protocol (PTP) / IEEE 1588 clocks with frequency resolution less than 1.11x10-16
    • Combo Bus simplifies compliance with ITU-T G.8273.2
    • Precise (1ps) resolution for phase measurement and control
    • All outputs/inputs can be configured to decode/encode PWM clock signals
    • PWM can be used to transmit and receive embedded frame and sync pulses; as well as Time of Day (ToD) and other data
  • Device requires a crystal oscillator or fundamental-mode crystal: 25MHz to 54MHz
  • Optional XO_DPLL input allows a wider range for XO, TCXO or OCXO frequencies from 1MHz to 150MHz for applications that require a local oscillator with high stability
  • Serial processor ports support 1MHz I2C or 50MHz SPI


Title language Type Format File Size Date
star 8A34002 Datasheet
PDF 1.97 MB
AN-1010 ClockMatrix Time-to-Digital Converter
Application Note
PDF 1.92 MB
Using a Frame or Sync Pulse Input for Clock Alignment
Application Note
PDF 2.13 MB
ClockMatrix™ - Channel Control for PTP with the Time of Day Counter
Application Note
PDF 393 KB
ClockMatrix Oscillator Compensation
Application Note
PDF 231 KB
Coordinating Timing Cards in Larger Systems
Application Note
PDF 349 KB
Aligning 1PPS Clocks in Larger Chassis Systems
Application Note
PDF 1.62 MB
ClockMatrix: Methods for Changing DPLL Settings during a Reference Switch
Application Note
PDF 354 KB
8A3400x - Asynchronous Data Over PWM Using Timing Commander for FW4.9
Application Note
PDF 563 KB
AN-807 Recommended Crystal Oscillators for Network Synchronization
Application Note
PDF 148 KB
Mapping Clock Device Pins to Clock Numbers in the 8A34001
Application Note
PDF 390 KB
Translating Non-Integer Frequencies with ClockMatrix
Application Note
PDF 880 KB
Auto-Alignment of Outputs
Application Note
PDF 584 KB
Locking a ClockMatrix DPLL to Internal Feedback
Application Note
PDF 162 KB
ClockMatrix Firmware Update through Serial Port and EEPROM v1.0
Application Note
PDF 739 KB
AN-1033 Delay Variation Measurement and Compensation
Application Note
PDF 633 KB
AN-1031 Time Alignment Background in Wireless Infrastructure
Application Note
PDF 479 KB
AN-1032 Time-of-Day Within an Ideal Chassis-Based System
Application Note
PDF 442 KB
AN-1034 Minimizing Backplane Signal Usage
Application Note
PDF 566 KB
AN-1020 ClockMatrix on nCXO Redundancy
Application Note
PDF 659 KB
AN-950 82P338XX/9XX Usage of a SYNC Input for Clock Alignment
Application Note
PDF 324 KB
8A3xxxx Firmware Version v4.8.7 Errata Notice
Device Errata
ClockMatrix GUI Step-by-Step User Guide
PDF 10.53 MB
8A3xxxx Family Programming Guide (v4.8.7)
PDF 2.35 MB
8A3xxxx Firmware Version v4.9.1 Release Notes
PDF 213 KB
8A3xxxx Firmware Version v4.8.7 Release Notes
PDF 143 KB
8A3xxxx Family Programming Guide (v4.8)
PDF 2.35 MB
8A3x0xx Schematic Checklist (v1.23)
ClockMatrix Family Overview
PDF 320 KB
IDT Clock Generation Overview
PDF 1.83 MB
PCN# : 210012 Firmware Update for Clock Matrix Family of Jitter Attenuators and Clock Synchronizers
Product Change Notice
PDF 113 KB
PCN# : TP2002-01 Firmware Update from v4.8 to v4.8.7
Product Change Notice
PDF 301 KB
PCN# : TP1906-05 Correct System APLL Loss-of-Lock Issue
Product Change Notice
PDF 123 KB
PCN#: TP1902-02 ROM Update for ClockMatrix Products
Product Change Notice
PDF 435 KB
8A3xxxx Firmware Version v4.8.8 Release Notes
Release Note
PDF 103 KB
8A3400x ITU-T G.8262 and G.8262.1 Compliance Test Report
PDF 6.54 MB
ClockMatrix 72-QFN (8 Output) Evaluation Board Schematic
PDF 206 KB


Title language Type Format File Size Date
8A34002 BSDL Model
Model - BSDL
8A34002P BSDL Model
Model - BSDL
8A340x2 BSDL Model
Model - BSDL
8A340xx ClockMatrix IBIS Model v1.13
Model - IBIS
ZIP 2.55 MB
Timing Commander Personality File for ClockMatrix 8A34002 (v10.0.1, FWv4.8.7)
Software & Tools - Other
ZIP 48.71 MB
Timing Commander Installer (v1.17)
Software & Tools - Other
ZIP 18.02 MB
ClockMatrix Register Header Files v4.8.7
Software & Tools - Other
ZIP 278 KB
ClockMatrix Firmware (v4.8.7) Trigger Registers, v1.1
Software & Tools - Other
Software & Tools - Other
ZIP 177 KB
Software & Tools - Other
ZIP 177 KB

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PTP Clock Manager for Linux Protocol Stack Supports IEEE 1588 and Synchronous Ethernet communication requirements. PTP Clock Manager features a clock servo and Packet Delay Variation (PDV) filter to meet the needs for G.8275.1 and G.8275.2 standards from the ITU-T. Renesas