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The 8A34003PB-000NBG system synchronizer is based on the precise timing signals of the IEEE 1588 Precise Time Protocol (PTP) and Synchronous Ethernet (SyncE). This device can be used as a single timing and synchronization source of the system, or two can be used as redundant pairs to enhance system reliability. The digital control oscillator (dco) can be controlled by the IEEE 1588 clock recovery servo software running on an external processor.

The 8A34003PB-000NBG supports the implementation of physical layer timing using digital PLL(DPLL) and other timing modules. Additionally, the 8A34003PB-000NBG can also be used for active measurement and compensation of clock propagation delays on backplanes and circuit boards. To ensure that the time error between the IEEE 1588 timestamp units (tsu) in the system is minimized and the time and phase distribution is accurate.

Main features

Four independent timing channels

Jitter output is lower than 150fs RMS(typical value)

Digital PLL(DPLL) locks any frequency from 0.5Hz to 1GHz

The DPLLs numerical control oscillator (dco) generates any frequency from 0.5Hz to 1GHz

The DCO output can be consistent with the output of any DPLL or DCO in terms of phase and frequency

DPLLs complies with the ITU-T G.8262 Synchronous Ethernet (SyncE) standard

IEEE 1588 support:

The dco can be controlled by external IEEE 1588 software to synthesize a Precision Time Protocol (PTP)/IEEE 1588 clock with a frequency resolution of less than 1.11x10-16

The combined bus simplifies compatibility with ITU-T G.8273.2

Precise resolution of phase measurement and control (1ps)

All outputs/inputs can be configured to decode/encode PWM clock signals

PWM can be used to send and receive embedded frames and synchronous pulses. And the time of day (ToD) and other data

The equipment requires a crystal oscillator or fundamental mode crystal :25MHz to 54MHz

The optional XO_DPLL input allows for a wider frequency range of XO, TCXO or OCXO, from 1MHz to 150MHz, making it suitable for applications that require a highly stable local oscillator

The serial processor port supports 1MHz I C or 50MHz SPI

Typical applications

▪ Core and access IP switches/routers

▪ Synchronize Ethernet devices

Telecom Border Clock (T-BC) and Telecom Time Slave Clock (T-TSC) compliant with ITU-T G.8273.2

▪ 10Gb, 40Gb and 100Gb Ethernet interfaces

▪ Central office timing source and distribution

▪ Wireless infrastructure for 4.5G and 5G network devices

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