The Communications Company
TM
B E N E F I T S
Ultra SCSI technology doubles
the I/O bandwidth to 20 MBps
Builds upon proven technology --
A pin-for-pin replacement for
the industry standard
LSI53C810 and LSI53C810AE
Easy migration minimizes
schedule and design risk
Provides new features for
enhanced PCI performance
and flexibility
F E A T U R E S
Performs high-speed single-
ended SCSI bus transfers up to:
20 MBps synchronous Ultra
SCSI transfers
7 MBps asynchronous transfers
SCRIPTS
TM
Instruction Prefetch
Load and Store instruction
Support for PCI Cache Line
Size Register
Functions as full 32-bit PCI
DMA bus master
Bursts 2, 4, 8, or 16 dwords of
data across PCI bus using
80-byte DMA FIFO
P C I - U LT R A S C S I C O N T R O L L E R
O V E R V I E W
The LSI53C860E controller supports Ultra SCSI transfers, enabling the
chip to transfer SCSI data at up to 20 MBps across an 8-bit SCSI bus. Ultra
SCSI doubles the synchronous transfer rates of Fast SCSI. The advantage of
LSI Logic's Ultra SCSI is that it significantly improves SCSI bandwidth, while
preserving existing hardware and software investments. The LSI53C860E
provides full SCSI-2 capabilities, including command queuing, and features
TolerANT
SCSI driver and receiver technology, for reliable operation in all
cabling environments. It is designed to connect to the Peripheral Component
Interconnect (PCI) bus, performing burst transfers on the bus in excess of
110 MBps.
The LSI53C860E controller and Storage Device Management System
(SDMS
TM
) software, provide a total Ultra SCSI solution in PC and workstation
environments. LSI Logic's SDMS software package supports the entire
LSI53C8XX family of PCI to SCSI controllers, plus a wide range of SCSI
peripheral devices.
PCI performance enhancements on the LSI53C860E include the SCRIPTS
(the LSI Logic developed SCSI programming language) instruction prefetch,
which when enabled, permits fetching four or eight double words of instruc-
tions or instruction operands. By pre-fetching instructions, the LSI53C860E
makes more efficient use of the PCI system bus by reducing the PCI bus over-
head requirements. In addition, the part supports the PCI Cache Line Size
Register with programmable alignment logic and automatic burst sizing,
allowing system architects to maximize their cache-based system performance
LSI53C860E
SCSI CONTROLLER
through efficient use of PCI Memory Read Line, Memory Read Multiple, and
Memory Write and Invalidate access cycles. Other selectable features that
can be activated include:
IRQ disable, allowing users to better control the times when their system
can receive interrupts.
SCSI Selected as ID register, improving SCRIPTS coding and system tracking.
Load and Store instruction allows the programmer a new, efficient
instruction option to load data directly to/from memory and from/to an
internal register, reducing the number of I/O instructions to implement a
SCRIPTS task.
E A S E - O F - U S E F E A T U R E S
Pin-for-pin replacement for LSI53C810 and LSI53C810AE devices
Minimal software and hardware modification required for Ultra SCSI
Compact 100-pin PQFP reduces board space requirements
Direct PCI to SCSI connection
Compiler-compatible with existing LSI53C7XX and LSI53C8XX SCRIPTS
Fully supported by SDMS software for complete PC-based
operating system support
F L E X I B I L I T Y F E A T U R E S
Selectable IRQ disable
SCSI Selected as ID register
Support for both 3.3 volt and 5 volt PCI interfaces
High-level programming interface (SCSI SCRIPTS)
Allows tailored SCSI sequences to be executed from main memory
Accommodates changes in the logical I/O interface definition
Low-level access to all registers and all SCSI bus signals
LSI53C860E SCSI Controller
C O M P A T I B I L I T Y F E A T U R E S
Full complement of LSI Logic SCSI SCRIPTS PCI development tools available
BIOS and driver support for hard disk, tape, CD-ROM, and removable
media peripherals for all of the major operating systems, including:
Windows
NT
4.0
Windows
95/98
DOS
Linux
NetWare
SCO UnixWare
TM
OS/2 Warp
Solaris
Figure 1: LSI53C860E system diagram
PCI Bus
LSI53C860E
80 MHz
Oscillator
Peripheral
SCSI Bus
CPU Box
CPU Baseboard
SCLK
Vdd
Vss
SCSI Connection
SCSI Term Connection
For more information please visit
the
LSI Logic web site at:
http://storageio.lsilogic.com
LSI Logic Corporation
North American Headquarters
Milpitas, CA
Tel: 800 574 4286
LSI Logic Europe Ltd.
European Headquarters
United Kingdom
Tel: 44 1344 426544
Fax: 44 1344 481039
LSI Logic KK Headquarters
Tokyo, Japan
Tel: 81 3 5463 7165
Fax 81 3 5463 7820
ISO 9000 Certified
LSI Logic logo design and TolerANT are registered
trademarks, and SCRIPTS and SDMS are trade-
marks of 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.
Copyright 2001 by LSI Logic Corporation.
All right reserved.
Order No. S20034
2/01-500 Printed in USA
LSI53C860E SCSI Controller
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