CAMARILLO, Calif.--Vitesse Semiconductor Corp. here today added three products to its V-PHY 2.5 family of ICs for Sonet/SDH OC-48 transmission systems: a 32:1 multiplexer with integrated clock generator and its companion, a 1:32 demux IC; and a 1:16 demux with integrated clock recovery functions.
The VSC8131 and VSC8132 chip set provides 32-bit OC-48/STM-16 multiplexer/demultiplexer functions. In addition, the VSC8131 multiplexer has an integrated clock generator with an internal Phase Locked Loop (PLL) that provides a 2.5-GHz clock output from a low-speed reference clock for optical transmission equipment.
The companion VSC8132 demultiplexer deserializes a 2.5-Gbits/s datastream into a 32-bit-wide 78-Mbits/s parallel output. It includes circuitry for frame detect synchronization to the output data frame and also has alarm indicators for loss-of-clock or loss-of-data conditions.
These 2.5-gigabits-per-second ICs operate at 3.3 volts and meet Bellcore's jitter performance requirements.
The VSC8166 demultiplexer deserializes a single 2.5-Gbit/s input into 16-bit 155-Mbit/s parallel output datastreams. An integrated clock recovery unit (CRU) maintains reference clock outputs in the absence of data and minimizes board space requirements and component count.
"The low power of the VSC8166 clearly provides a better physical layer solution for system designers," added Furlong. "It vastly improves their channel performance with the integrated clock recovery functions, and more importantly it simplifies the design-in so that customers can achieve their time-to-market goals."
Each of these 3.3-V ICs is packaged in low-cost 128-pin PQFPs, with production quantities available now. In quantities of 1,000, the VSC8131 is priced at $147, the VSC8132 at $105. and the VSC8166 at $131.