Zarlink and Marvell demonstrate synchronization over Ethernet physical layer using Zarlink PLL (phase locked-loop) and Marvell Ethernet PHY technologies
The synchronous ethernet solution jointly developed by Zarlink and Marvell will allow carriers to support real-time services over packet-based networks.
Carriers face a major stumbling block in the drive towards network convergence because many applications with "built-in" timing requirements rely significantly on network synchronization.
For example, economical cellular backhaul over IP networks requires synchronization to allow legacy applications such as voice and fax to function properly.
As high-growth applications such as YouTube and AOL Video gain popularity, these applications need to co-exist alongside critical time-sensitive services on IP backhaul networks.
To guarantee performance, carriers must currently operate a number of different networks and deploy costly external mechanisms to ensure synchronization.
In response, Zarlink and Marvell's collaborative solution focuses on emerging synchronous Ethernet solutions that allow carriers to support real-time services over asynchronous Ethernet networks.
In synchronous Ethernet operation, each piece of network equipment must have synchronized timing capabilities.
Features
- ZL30120 analog/digital PLL
- Synchronizes with standard telecom system references and synthesizes a wide variety of protected telecom line interface clocks that are compliant with Telcordia GR-1244-CORE, GR-253-CORE, ITU-T G.813, and compatible with ITU-T G.8261 (formerly G.pactiming)
- Internal low jitter APLL provides SONET/SDH clocks including 6.48 MHz, 19.44 MHz, 38.88 MHz, 51.84 MHz and 77.76 MHz, or 25 MHz and 50 MHz Synchronous Ethernet output clocks
- 2 PLL's, Programmable o/p sythesizers, 8 Reference i/ps, Configurable o/p & o/p delay
- Marvell 88E1145 Ethernet Physical Layer Device
- Gigabit Ethernet PHY Quad Transciever
- Low power and advanced functionality
- Supports Ethernet of copper 10BASE-T, 100BSE-T, 1000BASE-T
- Application: Synchrous Ethernet, Multi service Edge Switches or Routers, DSLAM Line Cards, WAN Line Cards, ADM Line Cards