Description
The MT9044 T1/E1/OC3 System Synchronizer contains a digital phase-locked loop (DPLL), which provides timing and synchronization signals for multitrunk T1 and E1 primary rate transmission links and STS-3/0C3 links.

Features
• Supports AT&T TR62411 and Bellcore GR-1244-CORE Stratum 3, Stratum 4 Enhanced and Stratum 4 timing for DS1 interfaces
• Supports ITU-T G.812 Type IV clocks for 1,544 kbit/s interfaces and 2,048 kbit/s interfaces
• Supports ETSI ETS 300 011, TBR 4, TBR 12 and TBR 13 timing for E1 interfaces
• Selectable 1.544MHz, 2.048MHz or 8kHz input reference signals
• Provides C1.5, C2, C3, C4, C6, C8, C16, and C19 (STS-3/OC3 clock divided by 8) output clock signals
• Provides 5 different styles of 8 KHz framing pulses
• Holdover frequency accuracy of 0.05 PPM
• Holdover indication
• Attenuates wander from 1.9Hz
• Provides Time Interval Error (TIE) correction
• Accepts reference inputs from two independent sources
• JTAG Boundary Scan

Applications
• Synchronization and timing control for multitrunk T1,E1 and STS-3/OC3 systems
• ST-BUS clock and frame pulse sources