DESCRIPTION

The IDT82V3380A is an integrated, single-chip solution for the Synchronous Equipment Timing Source for Stratum 2, 3E, 3, SMC, 4E and 4 clocks in SONET / SDH equipments, DWDM and Wireless base station, such as GSM, 3G, DSL concentrator, Router and Access Network applications.

FEATURES

HIGHLIGHTS

• The first single PLL chip:

• Features 0.5 mHz to 560 Hz bandwidth

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

• Exceeds GR-253-CORE (OC-12) and ITU-T G.813 (STM-16/Option I) 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

MAIN FEATURES

• Provides an integrated single-chip solution for Synchronous Equipment Timing Source, including Stratum 2, 3E, 3, SMC, 4E and 4 clocks

• Employs DPLL and APLL 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; the primary operating modes are Free Run, Locked and Holdover

• 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 PBO 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

• Supports manual and automatic selected input clock switch

• Supports automatic hitless selected input clock switch on clock failure

• Supports three types of input clock sources: recovered clock from STM-N or OC-n, PDH network synchronization timing and external synchronization reference timing

• Provides a 2 kHz, 4 kHz or 8 kHz frame sync input signal, and a 2 kHz and an 8 kHz frame sync output signals

• Provides 14 input clocks whose frequency cover from 2 kHz to 622.08 MHz

• Provides 9 output clocks whose frequency cover from 1 Hz to 622.08 MHz

• Provides output clocks for BITS, GPS, 3G, GSM, etc.

• Supports AMI, PECL/LVDS and CMOS input/output technologies

• Supports master clock calibration

• Supports Master/Slave application (two chips used together) to enable system protection against single chip failure

• Meets Telcordia GR-1244-CORE, GR-253-CORE, GR-1377-CORE, ITU-T G.812, ITU-T G.813 and ITU-T G.783 criteria

OTHER FEATURES

• Multiple microprocessor interface modes: EPROM, Multiplexed, Intel, Motorola and Serial

• IEEE 1149.1 JTAG Boundary Scan

• Single 3.3 V operation with 5 V tolerant CMOS I/Os

• 100-pin TQFP package, Green package options available

APPLICATIONS

• BITS / SSU

• SMC / SEC (SONET / SDH)

• DWDM cross-connect and transmission equipments

• Synchronous Ethernet equipments

• Central Office Timing Source and Distribution

• Core and access IP switches / routers

• Gigabit and Terabit IP switches / routers

• IP and ATM core switches and access equipments

• Cellular and WLL base-station node clocks

• Broadband and multi-service access equipments

• Any other telecom equipments that need synchronous equipment system timing