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Technology Stocks : LSI Corporation -- Ignore unavailable to you. Want to Upgrade?

To: akmike who wrote (17080)	2/17/1999 8:08:00 AM
From: Paul Lee	Read Replies (2) \| Respond to of 25814

LSI Logic SCSI Bus Expander Ideal for SAN Applications; Versatility Ideal for Clustering and High Availability Applications MILPITAS, Calif., Feb. 17 /PRNewswire/ -- LSI Logic Corporation (NYSE: LSI) adds the Symbios(R) SYM53C140 Ultra2 SCSI Bus Expander to its SCSI Bus Expander family. The new expander, from LSI Logic's Storage Components group based in Colorado, includes all the features found in LSI Logic's popular SYM53C120 and SYM53C141 expanders plus support for Ultra2 SCSI -- all incorporated into a single product. SCSI bus expanders allow users to extend SCSI cable lengths and expand total SCSI device connectivity without impact to SCSI Protocol or software while providing electrical isolation between separate SCSI buses. This makes the SYM53C140 the perfect solution for today's clustering, storage area network (SAN) and storage enclosure applications. "Whether a system designer is setting up high availability storage systems, a server cluster, or expanding existing architecture, the SYM53C140 is a robust, cost-effective solution," notes Harry Mason, LSI Logic's Director of Global Strategic Alliances. "You can now access terabytes of data without sacrificing system performance or software investments." The SYM53C140 can support single-ended (SE), high voltage differential (HVD), or low voltage differential (LVD) signaling -- making it highly configurable for various system configurations. By using LVD to LVD connections and cascading expanders, users can achieve Ultra2 SCSI transfer rates (80MB/sec) across extended SCSI cable lengths. This means that users can continue to use their existing SCSI infrastructure even when system demands require high data transfer rates across longer distances. A very important feature of the SYM53C140 is a self-calibration mechanism that accounts for periodic variations in system voltage and temperature conditions as well as silicon process, maintaining constant and precise control over bus timing. The signals between buses are regenerated, reshaped, and transmitted transparently to the SCSI subsystem. Without the self- calibration feature, it will be very difficult to take advantage of Ultra2 SCSI's performance and distance capabilities. The SYM53C140 bus expander creates distinct, electrically isolated bus segments. Each SCSI segment can be logically disconnected from the others without disrupting SCSI transfers currently in progress, facilitating system maintenance, hot-plugging, diagnostics, and upgrades. Fully integrated, on-chip LVDlink(TM) transceivers provide the multi-mode SE, HVD, and LVD capability; external precision regulators are not required. LVDlink is a balanced driver design that is compliant with the industry standard SCSI Parallel Interface-2 (SPI-2) document. Availability The SYM53C140 is packaged in a 160-pin plastic quad flat pack, requires no SCSI ID, and is completely independent of software. Samples and an evaluation board are available now. Pricing for the chip is $48.90 in volume.