ZL30102
Stratum 4/4E Redundant System Clock Synchronizer for T1/E1 and H.110
Overview
| The ZL30102 is a high-performance DPLL (digital phase-locked loop) designed for synchronization and timing control of redundant system clocks requiring Stratum 4/4E timing specifications. The ZL30102 generates ST-BUS and other TDM clock and framing signals that are phase locked to one of three network references. It helps ensure system reliability by monitoring its references for frequency accuracy and stability and by maintaining a tight phase alignment between redundant primary and secondary system clocks even in the presence of high network jitter. The ZL30102 is intended to be the central timing and synchronization resource for network equipment that complies with Telcordia, ETSI, ITU-T and ANSI network specifications. |
Simplified Block Diagram
Typical Applications
- Synchronization and timing control for multi-trunk DS1/ E1 terminal systems such as DSLAMs, Gateways and PBXs
- Clock and frame pulse source for H.110 CT Bus, ST-BUS, GCI and other time division multiplex (TDM) buses
- 8 kHz clock multiplier
Features & Benefits
- Accepts three input references and synchronizes to any combination of 8 kHz, 1.544, 2.048, 8.192 or 16.384 MHz inputs
- Synchronizes to clock-and-sync-pair to maintain minimal phase skew between redundant primary and a secondary clocks
- Provides a range of clock outputs: 1.544, 2.048, 3.088, 6.312 and 16.384 MHz and either 4.096 and 8.192 MHz or 32.768 and 65.536 MHz
- Provides 5 styles of 8 kHz framing pulses
- Less than 0.6 nspp jitter on all output clocks
- Holdover frequency accuracy of 1x10-7
- Attenuates wander from 1.8 Hz
- Provides Lock, Holdover and selectable Out of Range indication
- Simple hardware control interface
- Manual and Automatic hitless reference switching
- Supports Telcordia GR-1244-CORE Stratum 4 and 4E
- Supports ITU-T G.823 and G.824 for 2048 kbs and 1544 kbs interfaces
- Supports ANSI T1.403 and ETSI ETS 300 011 for ISDN primary rate interfaces
Resources
Documentation
Application Notes
- ZLAN-68 - List of Oscillators & Crystals that can be used with Zarlink's PLL, Digital Switches with Embedded PLL & Timing over Packet Devices
- ZLAN-178 - Synchronizer Power Supply Decoupling and Layout Practices
Product Previews
Downloads, Firmware and Drivers
- BSDL Files:
- zl30102qdc.bsd
- IBIS Models:
- zl30102qdc.ibs
Applications
Typical Applications
- Synchronization and timing control for multi-trunk DS1/ E1 terminal systems such as DSLAMs, Gateways and PBXs
- Clock and frame pulse source for H.110 CT Bus, ST-BUS, GCI and other time division multiplex (TDM) buses
- 8 kHz clock multiplier
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Ordering
Clock Generator MHz to 16.384MHz-IN 65.536MHz-OUT 64-Pin TQFP Tray
| Distributor | SKU | Stock | MOQ | Pkg | |
|---|---|---|---|---|---|
| Microchip Technology Inc. | .. | .. | .. | .. | Buy Now |
| Arrow Electronics | ZL30102QDG1 | 11 | 1 | .. | Buy Now |
| Digi-Key | ZL30102QDG1-ND | 160 | Tray | No Stock | |
| Mouser | 494-ZL30102QDG1 | 3 | 1 | Tray | Buy Now |
