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Home » NEWEST Products » New by Manufacturer » Integrated Device Technology (IDT) » IDT8V89316 Ethernet PLL & IEEE 1588 Synthesizer - IDT
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Integrated Device Technology IDT8V89316 Ethernet PLL & IEEE 1588 Synthesizer

Integrated Device Technology
IDT8V89316 Ethernet PLL & IEEE 1588 Synthesizer

IDT's IDT8V89316 Ethernet PLL & IEEE 1588 Synthesizer is used to frequency synchronize equipment with an Ethernet connected reference; its integrated DCO (Digitally Controlled Oscillator) can be controlled by an external IEEE 1588 clock recovery servo to synthesize IEEE 1588-based clocks. The IDT8V89316 low jitter output clocks can be used to directly time Gigabit Ethernet PHYs and QSGMII devices. The IDT8V89316 synchronization functions are provided by a Digital PLL (DPLL) with an embedded clock synthesizer. The DPLL accepts three single ended reference inputs that can operate at 25MHz, 125MHz or 156.25MHz. The references are continually monitored for loss of signal and for frequency offset per user programmed thresholds. The active reference for the DPLL is determined by forced selection or by automatic selection based on user programmed priorities and locking allowances and based on the reference

Features
  • Digital PLL synchronizes with Ethernet connected synchronization sources
  • DPLL bandwidth is 1.2 Hz; DPLL holdover accuracy is 1.1X10-5 ppm
  • Input references are monitored for frequency offset and activity
  • DPLL holdover, free run and hitless reference switching can be forced by the host processor or can be automatically controlled by an internal state machine
  • Internal DCO has resolution of 0.01105 ppb and can be controlled by an external processor via I2C interface for IEEE 1588 clock generation
  • One Analog PLL for jitter attenuation
  • Jitter generation <0.65ps RMS (10kHz to 20MHz), meets jitter requirements of 1 GbE PHYs and QSGMII

  • IN1, IN2 and IN3 accept single ended reference clocks whose frequencies can be 25MHz, 125MHz or 156.25MHz
  • OUT1 outputs a differential clock with frequency of 125MHz or 156.25MHz
  • OUT2 to OUT6 output differential clocks all with the same frequency of 125MHz or 156.25MHz
  • OUT7 outputs a free-running LVCMOS clock with frequency of 25MHz

Applications
  • Industrial Automation
  • Power Systems
Functional Block Diagram
Functional Block Diagram

IDT's IDT8EBV89316 Evaluation Board for Industrial Automation and Power Systems allows the user to connect up to three single ended reference inputs via SMA connectors. The inputs can operate at 25MHz, 125MHz or 156.25MHz. Synchronization functions are provided by the IDT8V89316 Digital PLL (DPLL) device which integrates an embedded clock synthesizer. As well as clock inputs and outputs the evaluation board supports control and monitoring of the IDT8V89316 device from a Windows or Linux computer over its I2C interface using the on-board USB to I2C converter.  The IDT8EBV89316 low jitter differential output clocks can be used to directly synchronize 1 Gigabit Ethernet PHYs and QSGMII devices by connecting the evaluation board's SMA connectors to reference clock inputs on the system board.

IDT IDT8EBV89316 Evaluation Board
Order Integrated Device Technology IDT8V89316 Ethernet PLL & IEEE 1588 Synthesizer View Product Detail
Features
  • SMA connector inputs for three single ended 25MHz, 125MHz or 156.25MHz reference clocks
  • SMA connector outputs for a 125MHz or 156.25MHz differential clock, three differential 125MHz or 156.25MHz clocks at the same frequency and a free-running 25MHz LVCMOS clock
  • On-board USB to I2C microprocessor interface converter
  • Single 5V power supply
Kit Contents
  • Evaluation Board
  • USB Cable
  • 5V Universal Power Supply

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