SYM8951U Data Sheet SYM8951U PCI-to-Ultra2 SCSI Host Adapter I O-ready 2 At up to 80 MBytes/sec, the SYM8951U host adapter combines the highest Ultra2 SCSI data transfer rates with the high performance PCI system bus. Based on Symbios’ industry first SYM53C895 Ultra2 SCSI I/O Processor, the SYM8951U provides Universal Low Voltage Differential TM (LVD) signaling for SCSI. LVDlink technology, Symbios’ implementation of LVD transceivers, eliminates the distance and device constraints that exist in today’s Ultra SCSI single-ended designs while offering higher data transfer rates. Installing and configuring the SYM8951U host and number of connected devices. The high SCSI adapter could not be easier. With built-in SCAM bus bandwidth of Ultra2 SCSI, and the (SCSI Configured AutoMatically) and SCSI bus improvements in distance, connectivity, and configuration utilities, setting up the SCSI bus is a reliability, make the SYM8951U an ideal host snap. Symbios’ powerful SCSI Device Management connection to a RAID controller and other System (SDMS) software, and on-board BIOS and demanding I/O applications in the high configuration utility, makes installation of the SCSI performance workstation and server markets. I/O subsystem easy and nearly automatic. And with no jumpers, switches, IRQs, system DMA or The SYM8951U LVDlink transceivers provide the addresses to budget, installing the SYM8951U to data reliability of differential signaling without connect up to 15 Ultra2 devices becomes a matter of the cost of high voltage differential transceivers. plugging in the host adapter and loading the drivers. For critical data handling applications, Symbios offers data and product reliability, software and Whether you are migrating from either Ultra SCSI or hardware compatibility, with easy installability. Fast SCSI, Ultra2 SCSI provides a high performance Symbios and our technology partners’ extensive I/O migration path while preserving your existing host adapter and software testing ensures OEM PCI-SCSI software investment. As compared to Ultra compatibility with all major operating systems SCSI designs, the SYM8951U provides twice the and a wide variety of SCSI-1, Fast SCSI-2, Ultra performance and allows four times the cable length SCSI and Ultra2 SCSI devices. SYM8951U Bus Plug-and-- Number of SCSI SCSI Rate SCSI Bus Bootable Host Adapter Interface Play SCSI Devices Connectors Overview 80 MB/s Synchronous, 16-bit Internal:68-pin 3.3/5V PCI Yes 14 MB/s Asynchrounous, Single-endedY5 es 1 External:68-pin Bus Master Fast / Ultra / Ultra2 SCSI or LVDlink - VHDCI Applications Symbios Host Adapter Compatibility and � Applications storing or transporting large block size Quality transfers – video production and editing, medical Symbios is a key developer and contributor to the original imaging, video on demand committees that defined today’s SCSI and PCI standards. This leadership and dedication to the development of � Intersystem connections – Server and Workstation to industry standards and work with other industry leaders RAID and network management of core chip sets, processors, system providers, SCSI � Upgrading existing Fast or Ultra SCSI systems device peripherals, BIOS, and operating systems enables � Adding Ultra2 SCSI hard drives to Servers, Symbios to assure users the utmost compatibility and Workstations and RAID storage subsystems interoperability. Our product compatibility and interoperability are thoroughly tested in Symbios’ and LVDlink - Symbios Universal LVD technology partners’ test labs. Symbios’ ISO-9001 Transceivers certification assures users of the highest levels of product Balancing backward compatibility with I/O quality and reliability. performance and lower costs, the SYM53C895 integrates Symbios’ Universal LVDlink transceivers with the Ultra2 Symbios SYM8951U Kit Contents SCSI I/O processor. Depending on SCSI bus � SYM8951U PCI-to-Ultra2 SCSI host adapter connections, bus cabling conditions are sensed and the � On-board SDMS BIOS with built-in, easy-to-use SCSI universal LVDlink transceivers automatically select configuration utility single-ended or LVD SCSI modes and indicate the mode � Symbios SCSI Device Management System (SDMS) with the on-board SE or LVD LEDs. In single-ended software suite with a full range of O/S support mode, the SYM8951U performs synchronous data � DOS/Windows 3.1/Windows for Workgroups 3.11, transfers up to Ultra SCSI rates, subject to standard Ultra Windows 95, Windows NT 3.5X and 4.0, SCO UNIX SCSI cable distance and connected device constraints. In Open Server 5, UNIXWARE, Novell NetWare 3.1X and LVD mode, the host adapter supports up to 12.5-meter 4.X, OS/2 cables and up to 15 LVD devices with the same cables and � connectors as defined in the SCSI-3 Parallel Interface ANSI SCSI configuration utilities standard. � SYM8951U User’s Guide � SDMS User’s Guide LVDlink transceivers also provide fail-safe operation of the receiver by detecting when the SYM8951U is connected to a high voltage differential (HVD) signal. When connected to HVD, the SYM8951U’s SCSI bus enters a high- impedance mode and activates the on-board HVD LED. Hardware Features and Benefits Performance Synchronous: up to 80 MB/sec Ultra2 SCSI Includes 4 KB internal RAM for SCRIPTS instruction storage, to up to 40 MB/sec Ultra SCSI reduce or eliminate instruction fetches over the PCI bus up to 20 MB/sec Fast SCSI Improved support for large block transfers at Ultra2 SCSI speeds Asynchronous: up to 14 MB/sec Termination: Active, automatic DMA bus mastering for low overhead with 32-bit burst data LVDlink provides automatic switching between transfers at PCI data transfer rates single-ended and LVD signaling Zero wait state PCI transfers Automatically enters high-impedance state when Up to 64 byte PCI burst size to maximize the PCI data transfer rate connected to a high voltage differential (HVD) signal Provides data reliability and cable distance of differential SCSI PCI Bus without the cost of external differential transceivers Complies with PCI Specification 2.1 Improves connectivity (up to 15 LVD Ultra2 SCSI devices) and Supports PCI Extended Access Cycles cable lengths (up to 12.5 meters of Ultra SCSI - longer cables may Supports 32-bit, 33 MHz PCI Bus be possible in point-to-point connections) Functions as full 32-bit PCI DMA Bus Master Uses same internal cables as Ultra SCSI and same connectors as Operates on 3.3V or 5V PCI buses Fast/Ultra SCSI SCSI Bus Supports wide variety of 16-bit SCSI peripherals LVDlink transceivers meet all of the requirements of the SPI-2 Supports SCAM (SCSI Configured AutoMatically) Level 1 standard and utilizes Symbios TolerANT® active negation functionality technology for improved single-ended SCSI signal integrity Uses Symbios’ SYM53C895 proprietary Ultra2 SCSI I/O RISC Prefetches up to 8 dwords of SCSI SCRIPTS™ instructions to save processor, an extension of the industry standard SYM53C8xx PCI bus overhead family Supports SCSI SCRIPTS Load and Store instructions, for more With appropriate cables, supports 8-bit hard drives, CD ROMs, efficient moving of data between memory and chip register space tape backups, hard disks, scanners and other 8-bit SCSI devices in Fast/Ultra SE mode only Target Initiated Negotiation SCSI Device Management Software (SDMS) CD-ROM, tape backup, hard disk, scanner and removable media Features support Multiple host adapter support On-board, field upgradable BIOS in Flash ROM Scatter/Gather On-board NVRAM for SCSI Plug and Play (SCAM) support Tagged command queuing for peak performance in multi-tasking environments Support Operating systems supported: Power Management for DSSPM support DOS (with ASPI support), Windows 3.1, Windows for Shared interrupts and shared memory to allow multiple PCI Workgroups 3.11 devices in a single-interrupt system Windows 95 Autoscan for ease of SCSI configuration Windows NT 3.51 & 4.0 Multiple LUNs per SCSI ID for RAID and media changer capability Novell NetWare 3.1 & 4.x Supports hard drives > 8 GB SCO UNIX Open Server 5.0 ASPI interface support UNIXWare Multi-Initiator in most operating systems OS/2 (including WARP) Disconnect/Reselect support Utilities: Install and FLASH (DOS only), SCSI format, SCSI Configuration, Verify Technical Specifications Supported Buses Board connectors 32-bit, DMA Bus Master, 3.3/5 V PCI local bus (versions 2.0 and 2.1) Internal: 68-pin, right angle, high density SCSI bus 4-pin for off-board SCSI Active LED 16-bit, Wide, SCSI Bus External: 68-pin, VHDCI (Very High Density Connector Single-ended SCSI Asynchronous transfers Interconnect) shielded, with screw jacks Single-ended Ultra SCSI Synchronous transfers Physical and Environmental Specifications LVD Ultra2 SCSI Synchronous transfers Board Size: 3.8” x 7.0” Performance Form Factor: PCI 2.1 Universal Board form factor PCI Transfer Rates – up to 100 MB/sec Bracket: ISA/EISA style SCSI Asynchronous – up to 14 MB/sec Operating temperature: 5° to 55° C SCSI Synchronous Single-Ended – up to 40 MB/sec Relative Humidity range: 5 to 90% non-condensing SCSI Synchronous LVD – up to 80 MB/sec Maximum dew point temperature: 32° C SCSI Bus Termination Storage temperature: -40° to 85° C Active, automatic terminating, Universal LVDlink SCSI with Electrical: 5V +/- 5% (1.5 A max) automatic switching to Single-ended 12V +/- 5% (50 mA max) Termination power: Self-resetting MTBF: > 500,000 hours SCSI bus connection Full agency certification and compliance Up to 15 SCSI, SCSI-2 or SCSI-3 FCC Class B and CISPR 22 On-board LED Indicators CE VDE TERMPWR Shorted -Term Power short VCCI SCSI Activity -SCSI Bus Active UL 94V0 HVD -HVD Sensed LVD -LVD Mode Active SE -Single-ended Mode Active 6.75” External LED SYM8951U Host Connector Internal 68-pin High-Density Adapter board SCSI Connector Fuse diagram - This block Terminators TERMPWR SCSI Activity diagram shows the Voltage HVD Regulator LVD SYM8951U utilizing the SE Serial Symbios SYM53C895 PCI- EPROM 3.80” Oscillator SCSI I/O processor. Flash BIOS SYM53C895 SYM8951U Universal PCI Bus Connector 68-pin Very High-Density SCSI Connector Symbios Sales Locations North American International Sales Locations Sales Locations Western Sales Area European Sales Headquarters 1731 Technology Drive, Suite 610 Westendstrasse 193/II San Jose, CA 95110 80686 Munich (408) 441-1080 Germany +49-89-547470-0 3300 Irvine Avenue, Suite 255 Newport Beach, CA 92660 Asia/Pacific Sales Headquarters (714) 474-7095 1 Claymore Drive #08-10 Orchard Towers, Eastern Sales Area (Rear Block) 92 Montvale Avenue, Suite 3500 Singapore 229594 Stoneham, MA 02180-3623 +65-8355 040 (781) 438-0381 Japan 2850 Metro Drive, Suite 510 Kijimon Building 4F Bloomington, MN 55425 6-26-9 Haramachida, Machida (612) 876-0800 Tokyo 194 Japan +81-427-32-0250 12377 Merit Drive, Suite 400 Dallas, TX 75251 Taiwan (972) 503-3205 21F-1, No. 171 Sungteh Road Taipei, Taiwan, R.O.C. 30 Mansell Court, Suite 220 +886-2-759811 Roswell, GA 30076 (770) 641-8001 Symbios, LVDlink and SCRIPTS are trademarks of Symbios, Inc. TolerANT is a registered trademark of Symbios, Inc. The information contained in this document is subject to change without notice. Symbios does not assume any liability arising out of the applications or use of any product or service described herein. This document neither states nor implies any kind of warranty, including but not limited to implied warranties of merchantability or fitness for a particular use. All Rights Reserved. No part of this document may be copied or reproduced in any form without the prior written consent of Symbios. © 1998 Symbios, Inc. An ISO 9001 Registered Company Printed in the U.S.A. T78974I 0498 1-800-856-3093 www.symbios.com