SYM20102 SYM53C120 SYM20101 193/II T299721

Symbios SYM20102 Data Sheet Symbios SYM20102 Differential to Single-ended Ultra SCSI Bus Expander Board The SYM20102, based on

Lr Symbios SYM20102 SYM20102 Data Sheet Symbios SYM20102 SYM20102 Differential to Single-ended Ultra SCSI Bus Expander Board The SYM20102 SYM20102, based on the SYM53C120 SYM53C120, is a single board solution allowing the extension of device connectivity and/or cable length limits of the SCSI bus. The SYM20102 SYM20102 operates as a SCSI bus converter when a differential bus is connected to a single-ended bus. The board provides electrical isolation between the two separate SCSI buses. This product works with Symbios' extensive SYM53C7xx and SYM53C8xx family of SCSI products as well as other industry SCSI controllers. As an advantage, the SYM20102 SYM20102 does not require any software or consume a SCSI ID, allowing for easy integration and maximum bus utilization. Adding the SYM20102 SYM20102 to a SCSI bus environment creates a low-risk solution for applications requiring long cable lengths, scaleable device connectivity and SCSI bus electrical isolation. Benefits Ideal for cluster configurations for availability and scalability Does not consume a SCSI ID, completely transparent to the SCSI subsystem Electrically isolates SCSI buses The SCSI signals are re-timed as needed to guarantee or improve the required SCSI timings Complete board solution for quicker time-tomarket Expands device connectivity and cable distances in certain applications Precision delay control block guarantees specified timings such as output pulse widths, setup times and hold times Allows for large disk configurations Complete support for SCSI -1, -2, and -3 Improved reliability with a single chip solution Completely independent of software SYM20102 SYM20102 Ultra SCSI Bus Converter Board Bus Interface Plug-andPlay SCSI Rate SCSI Bus SCSI Connectors Two SCSI to SCSI Yes 40 MB/s Synchronous 14 MB/s Asynchronous 16-bit Single-ended to/from Differential (2) 68-pin Features Termination Power Termination-enable control Termination power can be supplied to or from the cable. Switch SW1 controls Side SE, while switch SW2 controls Side Diff. Termination power supplied through self resetting current limiting device Termination-power control Connectors for off-board SCSI active LEDs and termination-enable control Supports wide Ultra SCSI 40 MB/s synchronous transfer rate When the switches are ON, termination power is supplied to the on-board terminators and to TERMPWR on the cable from the board. When the switches are OFF, only TERMPWR from the cable is used to power the terminators. Accepts any asynchronous or synchronous data transfer rates up to Ultra SCSI One LED per side indicates that TERMPWR is shorted to ground. Targets and initiators can be located on either the SCSI A or B side SCSI Busy Supports TolerANT® active negation technology Technical Description Converts a differential SCSI bus to single-ended SCSI bus On-board switches for cable termination power and termination enable. Two four-pin connectors externally control termination enables and bus activity LEDs for both sides. Two LEDs per side, SCSI busy and cable termination power fault Powered by a standard hard drive power connector which is available in most systems and subsystems As with all of Symbios SYM53C7xx and SYM53C8xx SCSI products, the SYM20101 SYM20101 features TolerANT technology. The benefits of TolerANT include increased immunity to noise and better performance due to balanced duty cycles. Termination Control To aid the subsystem designer, the on-board active SCSI terminators can be controlled by either switches (SW3 & SW4) or the pin connector (J5). To disable the on-board active SCSI terminators, SW3 (SE) & SW4 (Diff) or external switches on the subsystem cabled to J4, should be ON. Figure 2 shows where these switches and pin connector are located. The board contains an LED per side which indicates when there is SCSI active on that side. Also, an LED interface (J5) allows an external LED harness to be connected to the board for external mounting of SCSI Busy LEDs. Hardware Specifications SCSI connectors: J2: SE 68-pin, high-density latching J3: Diff B 68-pin, high-density latching LED connector: J5: for off-board SCSI Active LED Termination Control: J4: for off-board control SW3: for on-board SE disable SW4: for on-board Diff disable Termination power: Self-resetting SW1: Source for SE SW2: Source for Diff Form Factor: Approx. 4.5 in. x 3.95 in board size, four mounting holes, one at each corner Electrical: 5V + 5% (3.0 A max) Environmental: 5° to 55° C (operating) 5% to 90% relative humidity (non-condensing) MTBF: > 500,000 hours Agency certification: FCC Class B CISPR B VCCI Class 2 CE Mark UL 94V0 rated 2 Figure 1. SYM20102 SYM20102 Board Diagram 4.50" Termpwr Fail LED Termpwr Fail LED Switch Fuse DIFF 68-pin High-Density SCSI Connector 68-pin High-Density SCSI Connector Position ON ON OFF OFF SE SYM53C120 SYM53C120 Defaults SE TERMPWR Supplied Diff TERMPWR Supplied SE Termination ON Diff Termination ON n · 4.00" Power Connector SE_LED+ SE_LED- D_LEDSW1 SW2 SW3 SW4 Fuse Oscillator SYM20102 SYM20102 Figure 2. The SYM20102 SYM20102 operates as a SCSI bus converter when a differential bus is connected to a single-ended bus. Busy LED · D_LED+ SE_TE- SE_TE+ D_TE+ · n · · D_TE- · SE Busy LED Diff Term Power Fault LED SE Term Power Fault LED Diff Busy LED SE 68 pin HD Connector Diff 68 pin HD Connector NC · Gnd · Gnd +5v · · 3 LSI Logic Sales Locations North American Sales Locations International Sales Locations Western Sales Area European Sales Headquarters 1551 McCarthy Blvd. Milpitas, CA 95035 (408) 443-8000 Westendstrasse 193/II 193/II 80686 Munich Germany 011-49-89-547470-0 2 Park Plaza, Suite 1000 Irvine, CA 92614 (949) 553-5600 Eastern Sales Area 230 Third Ave Waltham, MA 02451 (781) 890-0180 8300 Norman Center Drive, Suite 730 Bloomington, MN 55437 (612) 921-8300 12377 Merit Drive, Suite 400 Dallas, TX 75251 (972) 503-3205 Asia/Pacific Sales Headquarters 1 Claymore Drive #08-10 Orchard Towers, (Rear Block) Singapore 229594 011-65-8355 040 Japan Kijimon Building 4F 6-26-9 Haramachida, Machida Tokyo 194 Japan +81-427-32-0250 Taiwan 10F.156, Min Sheng East Road, Sec 3 Taipei, Taiwan, R.O.C. +886-2-2718-7828 30 Mansell Court, Suite 220 Roswell, GA 30076 (770) 641-8001 LSI Logic logo design, ATMized, ATMizer, BitBuster, CASCADE, CoreWare and CoreWare logo design, FlexCore, G10 and G10 logo design, HYDRA, It Takes Two To Make One Of A Kind, LSI Links, MiniRISC, MiniSIM, SeriaLink, The System on a Chip Company and VISC are registered trademarks, and Cablestream, Cafe, C-MDE, Compacted Array, Cream, DCAM, DiscRISC, DiskRISK, Espresso, First-Time-Right, FlexStream and FlexStream logo design, G11 and G11 logo design, G12 and G12 logo design, GigaBlaze, Grounds, Hyper-LVDS, HyperPHY, Integra, Internet on a Chip, Logically Speaking, Merlin, Mint, Mint Technology, Mint logo design, Mocha, Netcore, Planet LSI, PowerPlay, Right-First-Time, Scenario, SerialICE, Sugar, Taking Cameras Digital, TinyRISC, TinySIM, WINS, TolerANT, LVDlink, and SCRIPTS are trademarks of LSI Logic Corporation. ARM is a registered trademark of Advanced RISC Machines Limited, used under license; OakDSPCore is a registered trademark of DSP Group Inc., used under license; SparKIT is a trademark of SPARC International, Inc. and is exclusively licensed to LSI Logic Corporation. All other brand and product names may be trademarks of their respective companies. LSI Logic Corporation reserves the right to make changes to any products and services herein at any time without notice. LSI Logic does not assume any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to in writing by LSI Logic; nor does the purchase, lease, or use of a product or service from LSI Logic convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of LSI Logic or of third parties. ©1998 by LSI Logic Corporation. All rights reserved. An ISO 9001 Registered Company Printed in the U.S.A. T299721 T299721 1298 1-800-856-3093 www.lsilogic.com ?M Lr