ZL30146
SyncE SONET/SDH Line Card PLL
Overview
| The ZL30146 OC-192/STM-64 PDH/SONET/SDH/Synchronous Ethernet Network Interface Synchronizer is a highly integrated device that provides timing for both PDH/SONET/SDH and Ethernet network interface cards. |
Simplified Block Diagram
Typical Applications
- ITU-T G.8262 Line Cards which support 1 GbE and 10 GbE interfaces
- SONET/SDH line cards up to OC-192/STM-64
Features & Benefits
- Synchronizes to standard telecom or Ethernet backplane clocks and provides jitter filtered output clocks for SONET/SDH, PDH and Ethernet network interface cards
- Supports the requirements of ITU-T G.8262 for synchronous Ethernet Equipment slave Clocks
- Meets the SONET/SDH jitter generation requirements up to OC-192/STM-64
- Two independent DPLLs provides timing for the transmit path (backplane to line rate) and the receive path (recovered line rate to backplane)
- Synchronizes to telecom reference clocks (2 kHz, N*8 kHz up to 77.76 MHz, 155.52 MHz) or to Ethernet reference clocks (25 MHz, 50 MHz, 62.5 MHz, 125 MHz)
- Selectable loop bandwidth of 14 Hz, 28 Hz, 890 Hz, 3.5 Hz, 1.7 Hz, or 0.1 Hz
- Supports automatic hitless reference switching and short term holdover during loss of reference inputs
- Generates standard SONET/SDH clock rates (e.g., 19.44 MHz, 38.88 MHz, 77.76 MHz, 155.52 MHz, 622.08 MHz) or Ethernet clock rates (e.g., 25 MHz, 50 MHz, 125 MHz, 156.25 MHz, 312.5 MHz) for synchronizing Ethernet PHYs
- Programmable output synthesizer to generate telecom clock frequencies from any multiple of 8 kHz up to 100 MHz (e.g., T1/E1, DS3/E3)
- Generates several styles of output frame pulse with selectable pulse width, polarity, and frequency
- Configurable input to output delay and output to output phase alignment
- Configurable through a serial interface (SPI or I2C)
- DPLLs can be configured to provide synchronous or asynchronous clock outputs
Resources
Documentation
Application Notes
- ZLAN-212-Low_Jitter_Synchronizer_Power_Supply_Decoupling_and_Layout_Practices- Dec10.pdf
- ZLAN-442 Crystals and Oscillators for Next Generation Timing Solutions
Product Previews
Downloads, Firmware and Drivers
- BSDL Files:
- zl30146bsdl.zip
- IBIS Models:
- zl30146ibis.zip
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