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• Supports the requirements of Telcordia GR-253 and GR-1244 for Stratum 3, 4E, 4 and SMC clocks, and the requirements of ITU-T G.781 SETS, G.813 SEC, G.823, G.824 and G.825 clocks • Internal APLL provides standard output clock frequencies up to 622.08 MHz with jitter < 3 ps RMS suitable for GR-253-CORE OC-12 and G.813 STM-16 interfaces • Programmable output synthesizers generate clock frequencies from any multiple of 8 kHz up to 77.76 MHz in addition to 2 kHz • Provides two DPLLs which are independently configurable through a serial software interface • DPLL1 provides all the features necessary for generating SONET/SDH compliant clocks including automatic hitless reference switching, automatic mode selection (locked, free-run, holdover), selectable loop bandwidth and pull-in range • DPLL2 provides a comprehensive set of features necessary for generating derived output clocks and other general purpose clocks • Provides 8 reference inputs which support clock frequencies with any multiples of 8 kHz up to 77.76 MHz in addition to 2 kHz • Supports master/slave configuration for AdvancedTCATM • Configurable input to output delay and output to output phase alignment • Optional external feedback path provides dynamic input to output delay compensation • Provides 3 sync inputs for output frame pulse alignment • Generates several styles of output frame pulses with selectable pulse width, polarity and frequency • Flexible input reference monitoring automatically disqualifies references based on frequency and phase irregularities • Supports IEEE 1149.1 JTAG Boundary Scan
ZL30121 Typical Application
• AdvancedTCATM Systems • Multi-Service Edge Switches or Routers • Multi-Service Provisioning Platforms (MSPPs) • Add-Drop Multiplexers (ADMs) • Wireless/Wireline Gateways • Wireless Base Stations • DSLAM / Next Gen DLC • Core Routers