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Technology Stocks : Vitesse Semiconductor -- Ignore unavailable to you. Want to Upgrade?

To: Clay Enos who wrote (2526)	5/10/1999 1:35:00 PM
From: Beltropolis Boy	Read Replies (1) \| Respond to of 4710

>We continue to favor the WAN-oriented suppliers, and Applied Micro Circuits and PMC-Sierra remain our two favorite picks in the group. thanks for the SSB piece. speaking of WANs ... ----- Electronic Buyers' News May 03, 1999, Issue: 1158 Section: Communications Vitesse unveils low-voltage CDR device -- SONET/SDH-based unit supports range of LAN/WAN protocols Mark LaPedus Silicon Valley -- Rounding out its chip offerings for OC-48 applications, GaAs chip specialist Vitesse Semiconductor Corp. is sampling a low-voltage, multirate part for high-end LAN/WAN equipment. The new VSC8122 is a 3.3-V, SONET/SDH-based clock and data recovery (CDR) unit designed to support several LAN/WAN protocols, such as Gigabit Ethernet, OC-3 (155 Mbits/s), OC-12 (622 Mbits/s), and OC-48 (2.5 Gbits/s), in one system. Competitive CDR units on the market support only a single transmission rate in a system. That means OEMs must deal with multiple line cards in their equipment, each of which has a separate CDR unit. The CDR unit is the most difficult device to develop at the physical layer, according to Christopher Gardner, vice president and general manager of Vitesse's Telecom Products Division, Camarillo, Calif. "What we've developed is the first device that performs clock and data recovery functions at 3.3 V," he said. Based on Vitesse's GaAs (gallium arsenide) technology, the VSC8122 is designed for use in SONET/SDH equipment, DWDM (dense wavelength division multiplexing) systems, digital cross-connect units, and other LAN/WAN products. The part works in conjunction with the company's recently announced VSC8140 transceiver, thereby providing a complete solution for multirate applications, Gardner said. The VSC8122, which consumes about 1 W, provides 500-mV-minimum output swings for clock outputs and 600-mV-minimum output swings for data outputs. The device uses a selectable-input reference clock of 19.44, 38.88, 77.76, or 155.52 MHz. Housed in a 64-pin PQFP, the VSC8122 sells for $85 in 1,000s. Volume production is slated for July.