Optical Tech

PMC-Sierra offers HyPHY reference design for Ethernet over OTN wireless backhaul

April 20, 2010

APRIL 19, 2010 -- PMC-Sierra Inc. has introduced what it asserts is a complete reference design for its HyPHY chipset that supports standards-based transport of Ethernet-based services via Optical Transport Network (OTN).

APRIL 19, 2010 -- PMC-Sierra Inc. (Nasdaq:PMCS) has introduced what it asserts is a complete reference design for its HyPHY chipset that supports standards-based transport of Ethernet-based services via Optical Transport Network (OTN).

ITU-T G.709 version 3 (10/2009) specifies direct mapping of Gigabit Ethernet (GbE) to the OTN layer by defining a new container for the smallest Optical Data Unit (ODU), ODU0 (1.238 Gbps), ensuring complete timing transparency and bandwidth efficiency of Ethernet-based client signals. In conjunction with HyPHY’s support for timing synchronization over packet services, the reference design enables cost-optimized Layer 1 OTN networks with full support for Ethernet network timing distribution, PMC-Sierra says.

PMC-Sierra’s HyPHY chipset integrates support for mapping and multiplexing of GbEs into sub-ODU1 (2.488-Gbps) containers. The new PM5423-KIT ODU0 reference design leverages HyPHY’s flexible packet interfaces and OTN Payload Tributary Mapping (OPTM) technology to add support for the newly defined OTN mapping modes, including:

transparent GbE mapping and de-mapping into/from ODU0 via GMP
ITU-T ODU0 multiplexing and de-multiplexing into/from higher order ODUks.

PMC-Sierra’s ODU0 reference design can be used with either the PM5420 HyPHY 20G or PM5426 HyPHY 10G device. It includes what PMC-Sierra describes as a complete collateral suite, including a hardware reference design for evaluation, design specification documentation, and FPGA source RTL for integration.

The HyPHY 20G is designed to deliver high-capacity framing, mapping, and multiplexing of Carrier Ethernet, SAN, OTN, transparent bit services such as video, and SONET/SDH to enable carriers to reduce the number of network elements, while incrementally adding bandwidth or changing service mix per node without forklift upgrades. The platform provides client-agnostic, rate-agile SFP and 10-Gbps pluggable (XFP or SFP+) interfaces and a set of flexible system interfaces for networking to a variety of switch fabric architectures.

The HyPHY 10G provides a lower density option for optical platforms.

The PM5423-KIT ODU0 FPGA reference design is available today. The PM5420 HyPHY 20G and PM5426 HyPHY 10G devices are also available.

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