ZL30364 Short Form Data Sheet
2
Microsemi Corporation
Detailed Features
General
• Three independent clock channels
• Operates from a single crystal resonator or clock oscillator
• Configurable via SPI or I
2
C interfaces
Time Synchronization Algorithm
• External algorithm controls software digital PLL to adjust frequency & phase alignment
• Frequency, Phase and Time Synchronization over IP, MPLS and Ethernet Packet Networks
• Frequency accuracy performance for WCDMA-FDD, GSM, LTE-FDD and femtocell applications, with target
performance less than ± 15 ppb.
• Frequency performance for ITU-T G.823 and G.824 synchronization interface, as well as G.8261 PNT EEC,
PNT PEC and CES interface specifications.
• Phase Synchronization performance for WCDMA-TDD, Mobile WiMAX, TD-SCDMA, CDMA2000 and LTE-A
applications with target performance less than ± 1 s phase alignment.
• Time Synchronization for UTC-traceability and GPS replacement.
• Client reference switching between multiple Servers
• Client holdover when Server packet connectivity is lost
Electrical Clock Inputs
• Nine input references configurable as single ended or differential and two single ended input references
• Synchronize to any clock rate from 1 Hz to 750 MHz on differential inputs
• Synchronize to any clock rate from 1 Hz to 177.5 MHz on singled-ended inputs
• Any input reference can be fed with sync (frame pulse) or clock.
• Electrical phase alignment to input 1 Hz frame pulse with and without associated reference clock (ref/sync
pairing)
• Flexible input reference monitoring automatically disqualifies references based on frequency and phase
irregularities
•LOS
• Single cycle monitor
• Precise frequency monitor
• Coarse frequency monitor
• Guard soak timer
• Per input clock delay compensation
Electrical Clock Engine
• Digital PLLs filter jitter from 0.1 mHz up to 1 kHz
• Flexible two-stage architecture translates between arbitrary data rates, line coding rates and FEC rates
• Internal state machine automatically controls mode of operation (free-run, locked, holdover)
• Automatic hitless reference switching and digital holdover on reference fail
• Physical-to-physical reference switching
