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82P33741 Datasheet Port Synchronizer

Manufacturer: Renesas

Overview: Port Synchronizer for IEEE 1588 and 10G/ 40G/ 100G Synchronous Ethernet 82P33741 Datasheet HIGHLIGHTS • DPLL1 and DPLL2 can be used on line cards to manage the generation of synchronous port clocks and IEEE 1588 synchronization signals based on multiple system backplane references • DPLL3 can be used on line cards to select ining line clocks for use on system backplanes; it can also be used for general purpose timing applications • APLL1 and APLL2 generate clocks with jitter < 1 ps RMS (12 kHz to 20 MHz) for: 1000BASE-T and 1000BASE-X ports and to generate IEEE 1588 time stamp clocks and 1 pulse per second (PPS) signals • APLL3 is Voltage Controlled Crystal Oscillator (VCXO) based and generates clocks with jitter <0.

Key Features

  • Differential reference inputs (IN1 to IN6) accept clock frequencies between 2 kHz and 650 MHz.
  • Single ended inputs (IN7 to IN12) accept reference clock frequencies between 2 kHz and 162.5 MHz.
  • Loss of Signal (LOS) pins (LOS0 to LOS3) can be assigned to any clock reference input.
  • Reference monitors qualify/disqualify references depending on activity, frequency and LOS pins.
  • Automatic reference selection state machines select the active reference for e.

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