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Technology Stocks : Rambus (RMBS) - Eagle or Penguin

RMBS 93.48

+1.2%

10:59 AM EST

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To: blake_paterson who wrote (47141)	7/12/2000 10:32:18 PM
From: richard surckla	Read Replies (1) of 93625

blake, all longs... "Rambus Develops 3.125-Gbit/s Serial Interface" RAMBUS NEWS!! Thanks to yoursuit.... nikkeibp.asiabiztech.com Rambus Develops 3.125-Gbit/s Serial Interface Rambus Inc has developed the SerDes serial interface with a peak data transfer rate of 3.125 Gbits/s. Unlike existing Rambus interfaces for dynamic random access memory (DRAM), the new device is designed to interconnect the printed circuit boards mounted in networking and related equipment. Connection is point-to-point, and no specifications have been defined for the logical layer protocol format or physical connectors. The firm recommends selecting a connector from among those currently available. The driver circuit converts an 8-bit wide parallel data stream into a 1-bit serial stream, using 8B/10B encoding. As a result, the peak data transfer rate is 2.5 Gbits/s. Two signal lines are used per channel for data transfer, in a differential scheme. The supply is +1.8V or +2.5V, and the signal amplitude is 0.5V on the driver side and 0.25V on the receiver side. Maximum signal path length between driver and receiver is about 30 inches. Rambus will license a macrocell needed to design integrated circuits (IC) for the interface, each consisting of a 4-channel SerDes interface circuit. The macrocell has the same chip footprint as DirectRambus when using a 0.18-micron rule, about 3 to 4mm2. The firm also plans to supply macrocells with higher channel counts. (July 2000 Issue, Nikkei Electronics Asia)

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