Benefits
Ultra2 SCSI I/O Processor
Performs SCSI data transfers up to 80 MB/s,
synchronous operation on a wide LVD SCSI bus
Transfers SCSI data synchronously up to Ultra
SCSI speeds in single-ended mode
Allows total SCSI cable lengths up to 12 meters
(longer cables may be possible in point-to-point
solutions)
Allows up to 16 LVD SCSI devices on the wide bus
Extra large 816 byte DMA FIFO for improved bus-to-
bus speed matching
Accommodates extra data while data bursting is
occurring
Provides better support for large block size
transfers at Ultra2 SCSI speeds
Allows the chip to handle a full disk sector
Supports up to 512 byte bursts across the PCI bus
31 levels of SCSI Synchronous Offset
Increases the pace of synchronous transfers to
match Ultra2 SCSI transfer speed
On-chip LVDlink Universal Low Voltage Differential
transceivers
Do not require external precision regulators or
resistors to operate
Allows greater device connectivity and longer
cable length
Transceivers switch between single-ended and LVD
to support backward compatibility
Provides reliability and distance of differential
SCSI without the cost of external differential
transceivers
LVDlink supports a long-term performance
migration path to over 100 megatransfers per
second
On-chip clock quadrupler for achieving 160 MHz
internal SCSI clock while using an external 40 MHz
oscillator
208-pin PQFP or 292-pin BGA
PCI Features
Connects directly as one load to the PCI bus
816 byte DMA FIFO for improved speed matching
Functions as full 32 bit PCI DMA Bus Master
Complies with PCI 2.1 Specification
Supports 33 MHz PCI Bus zero wait state operation
Supports maximum burst transfer rate of 132 MB/s
Supports PCI extended access cycles
SCSI Features
Includes 4 KB internal RAM for SCSI SCRIPTSTM
instruction storage, to reduce or eliminate instruction
fetches over the PCI bus
Prefetches up to 8 dwords of SCSI SCRIPTS
instructions, reducing PCI bus overhead
Expands arithmetic capabilities with enhanced
Register Move instruction support
Supports SCSI SCRIPTS Load and Store instructions,
for more efficient moving of data between memory
and chip register space
Integrates local memory bus for BIOS storage,
including EPROMs and FLASH memory
LVDlink transceivers utilize LSI Logic TolerANT active
negation technology for improved single-ended SCSI
signal integrity
SYM53C895
Block
Diagram
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,
Symbios, 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.
1999 by LSI Logic Corporation. All rights reserved.
An ISO 9001 Registered Company
Printed in the U.S.A.
T9984I
0599
1.5M
1-800-856-3093
www.lsilogic.com
LSI Logic Sales Offices and Design Resource Centers
Lr
LSI Logic Corporation
Corporate Headquarters
Tel: 408.433.8000
NORTH AMERICA
California
Irvine
Tel: 949.553.5600
Fax: 949.474.8101
San Diego
Tel: 619.613.8300
Fax: 619.613.8350
Wireless Design Center
Tel: 619.350.5560
Fax: 619.350.0171
Silicon Valley
Tel: 408.433.8000
Fax: 408.954.3353
Colorado
Boulder
Tel: 303.447.3800
Fax: 303.541.0641
Florida
Boca Raton
Tel: 561.989.3236
Fax: 561.989.3237
Georgia
Atlanta
Tel: 770.641.8001
Fax: 770.641.8805
Illinois
Schaumburg
Tel: 847.995.1600
Fax: 847.995.1622
Kentucky
Bowling Green
Tel: 502.793.0010
Fax: 502.793.0040
Maryland
Bethesda
Tel: 301.897.5800
Fax: 301.897.8389
Massachusetts
Waltham
Tel: 781.890.0180
Fax: 781.890.6158
Minnesota
Minneapolis
Tel: 612.921.8300
Fax: 612.921.8399
New Jersey
Edison
Tel: 732.549.4500
Fax: 732.549.4802
New York
New York
Tel: 716.218.0020
Fax: 716.218.9010
North Carolina
Raleigh
Tel: 919.785.4520
Fax: 919.783.8909
Oregon
Beaverton
Tel: 503.645.0589
Fax: 503.645.6612
Texas
Austin
Tel: 512.388.7294
Fax: 512.388.4171
Dallas
Tel: 972.503.3205
Fax: 972.503.2258
Houston
Tel: 281.379.7800
Fax: 281.379.7818
Plano
Tel: 972.244.5000
Fax: 972.509.0349
Washington
Issaquah
Tel: 425.837.1733
Fax: 425.837.1734
Canada
Ontario
Ottawa
Tel: 613.592.1263
Fax: 613.592.3253
Toronto
Tel: 416.620.7400
Fax: 416.620.5005
Quebec
Montreal
Tel: 514.694.2417
Fax: 514.694.2699
INTERNATIONAL
Australia
New South Wales
Reptechnic Pty Ltd
Tel: 612.9953.9844
Fax: 612.9953.9683
China
Beijing
LSI Logic International
Services Inc
Tel: 86.10.6804.2534.40
Fax: 86.10.6804.2521
Denmark
Ballerup
LSI Logic Development
Centre
Tel: 45.44.86.55.55
Fax: 45.44.86.55.56
France
Paris
LSI Logic S.A.
Immeuble Europa
Tel: 33.1.34.63.13.13
Fax: 33.1.34.63.13.19
Germany
Munich
LSI Logic GmbH
Tel: 49.89.4.58.33.0
Fax: 49.89.4.58.33.108
Stuttgart
Tel: 49.711.13.96.90
Fax: 49.711.86.61.428
Hong Kong
Hong Kong
AVT Industrial Ltd
Tel: 852.2428.0008
Fax: 852.2401.2105
India
Bangalore
LogiCAD India Private Ltd
Tel: 91.80.664.5530
Fax: 91.80.664.9748
Israel
Ramat Hasharon
LSI Logic
Tel: 972.3.5.480480
Fax: 972.3.5.403747
Netanya
VLSI Development Centre
Tel: 972.9.657190
Fax: 972.9.657194
Italy
Milano
LSI Logic S.P.A.
Tel: 39.039.687371
Fax: 39.039.6057867
Japan
Tokyo
LSI Logic K.K.
Tel: 81.3.5463.7821
Fax: 81.3.5463.7820
Osaka
Tel: 81.6.947.5281
Fax: 81.6.947.5287
Korea
Seoul
LSI Logic Corporation of
Korea Ltd
Tel: 82.2.528.3400
Fax: 82.2.528.2250
The Netherlands
Eindhoven
LSI Logic Europe Ltd
Tel: 31.40.265.3580
Fax: 31.40.296.2109
Singapore
Singapore
LSI Logic Pte Ltd
Tel: 65.334.9061
Fax: 65.334.4749
Sweden
Stockholm
LSI Logic AB
Tel: 46.8.444.15.00
Fax: 46.8.750.66.47
Switzerland
Brugg/Biel
LSI Logic Sulzer AG
Tel: 41.32.536363
Fax: 41.32.536367
Taiwan
Taipei
LSI Logic Asia-Pacific
Tel: 886.2.2718.7828
Fax: 886.2.2718.8869
Avnet-Mercuries
Corporation, Ltd
Tel: 886.2.2503.1111
Fax: 886.2.2503.1449
Jeilin Technology
Corporation, Ltd
Tel: 886.2.2248.4828
Fax: 886.2.2242.4397
Lumax International
Corporation, Ltd
Tel: 886.2.2788.3656
Fax: 886.2.2788.3568
United Kingdom
Bracknell
LSI Logic Europe Ltd
Tel: 44.1344.426544
Fax: 44.1344.481039
Sales Offices with Design Centers
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