FEATURES

HIGHLIGHTS

? Single PLL chip:

? Features 0.5 mHz to 560 Hz bandwidth

? Provides node clock for ITU-T G.8261/G.8262 Synchronous

Ethernet (SyncE)

? Exceeds GR-253-CORE and ITU-T G.813 jitter generation

requirements

? Provides node clocks for Cellular and WLL base-station (GSM

and 3G networks)

? Provides clocks for DSL access concentrators (DSLAM), especially

for Japan TCM-ISDN network timing based ADSL equipments

? Provides clocks for 1 Gigabit and 10 Gigabit Ethernet applications

MAIN FEATURES

? Provides an integrated single-chip solution for Synchronous Equipment

Timing Source, including Stratum 3, Stratum 4E, Stratum 4,

SMC, EEC-Option 1 and EEC-Option 2 Clocks

? Provides 156.25 MHz clock for 10 Gig Ethernet Application, with

less than 0.7 ps of RMS Phase Jitter (12 kHz - 20 MHz)

? Employs PLL architecture to feature excellent jitter performance

and minimize the number of the external components

? Integrates T0 DPLL and T4 DPLL; T4 DPLL locks independently or

locks to T0 DPLL

? Supports Forced or Automatic operating mode switch controlled by

an internal state machine. It supports Free- Run, Locked and Holdover

modes

? Supports programmable DPLL bandwidth (0.5 mHz to 560 Hz in 19

steps) and damping factor (1.2 to 20 in 5 steps)

? Supports 1.1X10-5 ppm absolute holdover accuracy and 4.4X10-8

ppm instantaneous holdover accuracy

? Supports hitless reference switching to minimize phase transients

on T0 DPLL output to be no more than 0.61 ns

? Supports phase absorption when phase-time changes on T0

selected input clock are greater than a programmable limit over an

interval of less than 0.1 seconds

? Supports programmable input-to-output phase offset adjustment

? Limits the phase and frequency offset of the outputs

? Provides OUT1~OUT7 output clock frequencies covering from 2

kHz to 625MHz

? Includes 125 MHz and 156.25 MHz for CMOS outputs

? Includes 125 MHz, 156.25 MHz, 312.5 MHz and 625 MHz for differential

outputs