The 8A34004 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.


  • Two 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 8A34004 Datasheet Datasheet PDF 1.92 MB
8A3xxxx Firmware Version v4.8.7 Errata Notice Device Errata PDF 38 KB
ClockMatrix GUI Step-by-Step User Guide Guide PDF 10.53 MB
8A3xxxx Family Programming Guide (v4.8.7) Guide PDF 2.35 MB
8A3xxxx Firmware Version v4.9.1 Release Notes Guide PDF 213 KB
8A3xxxx Firmware Version v4.8.7 Release Notes Guide PDF 143 KB
8A3xxxx Family Programming Guide (v4.8) Guide PDF 2.35 MB
8A34xxx 48QFN EVK User Manual Manual - Hardware PDF 1.99 MB
AN-1010 ClockMatrix Time-to-Digital Converter Application Note PDF 1.92 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
Optimizing Holdover Performance Application Note PDF 471 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-1030 CM Input/Input-to-Output/Output Phase Adjustment Application Note PDF 976 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
PCN# : 210012(R1) Firmware Update for Clock Matrix Family of Jitter Attenuators and Clock Synchronizers Product Change Notice PDF 135 KB
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# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN#: TP1902-02 ROM Update for ClockMatrix Products Product Change Notice PDF 435 KB
8A3x0xx Schematic Checklist (v1.23) Other XLSX 318 KB
ClockMatrix Family Overview Overview PDF 285 KB
IDT Clock Generation Overview Overview PDF 1.83 MB
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 Report PDF 6.54 MB


Title language Type Format File Size Date
Timing Commander Personality File for ClockMatrix 8A34004 (v10.0.1, FWv4.8.7) Software & Tools - Other ZIP 48.72 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 ZIP 73 KB
EEPROM_Image_PR4.7_Part=24xx1024_Address=0x50-0x51 Software & Tools - Other ZIP 177 KB
EEPROM_Image_PR4.7_Part=24xx1025_Address=0x50-0x54 Software & Tools - Other ZIP 177 KB
8A34004 BSDL Model Model - BSDL ZIP 2 KB
8A34004P BSDL Model Model - BSDL ZIP 2 KB
8A340xx ClockMatrix IBIS Model v1.13 Model - IBIS ZIP 2.55 MB

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