OAT ABO 0 K
1992 DEVICES
Systems Logic Imaging Storage
~ WESTERN DIGITAL
Copyright © 1992 Western Digital Corporation All Rights Reserved
Information furnished by Western Digital Corporation is believed to be accurate and reliable. However, no responsibility is assumed by Western Digital Corporation for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Western Digital Corporation. Western Digital Corpora- tion reserves the right to change specifications at any time without notice.
Western Digital is a registered trademark of Western Digital Corporation.
Interarchitecture, Caviar, Piranha, Tidbit, and CacheFlow are trademarks of Western Digital Corporation.
All other trademarks mentioned herein belong to their respective companies.
Western Digital Corporation
Western Digital Plaza, 8105 Irvine Center Drive, Irvine, CA 92718 For Service and Literature, call:
714.932.4900
WD16C451, WDl6C551 WD90C30
WD16C452, WD16C552 WD90C31
WD16C550 WD90C55
WD76CJOAILPILV WDJOCOIA
WD76C20ILV WDJOC27
WD76C30ILV WD33C92A
WD77JOILP WD33C93B
WD79JOILP WD33C95A, WD33C96A
•
ICS90C61A WD37C65C
ICS90C63 WD42C22C
ICS90C64 WD60C31B
WD90COO WD60C40A
WD90Cll, WD90CllA WD60C80
WD90C20, WD90C20A III WD61C23A
WD90C22 WD61C40A
WD90C26
TABLE OF CONTENTS
TABLE OF CONTENTS
Title Page
Alphanumeric Table of Contents ... vii Data Sheet and Device Status Definitions ... viii Quality, Interarchitecture, and Low Voltage Solutions ... ix Data Sheets:
SYSTEMS LOGIC/PERIPHERAL DEVICES
WD16C451, WD16C551 - Enhanced Asynchronous Communications Element (ACE)
with Parallel Port ... 1-1 2 WD16C452, WD16C552 - Dual Enhanced Asynchronous Communications Element (ACE) 3 WD16C550
4 WD76C10AlLP/LV 5 WD76C20/LV 6 WD76C30/LV 7 WDn10/LP 8 WD7910/LP
IMAGING DEVICES 9 ICS90C61A 10 ICS90C63 11 ICS90C64 12 WD90COO
with Parallel Port ... 2-1 Enhanced Asynchronous Communications Element (ACE) with FIFOs .. 3-1 ISA-Based System Controller for 80386SX and 80286
Desktop and Portable Compatibles ... . . 4-1 Floppy Disk Controller, Real Time Clock, IDE Interface,
and Support Logic Device ... 5-1 Peripheral Controller, Interrupt Multiplexer, and Clock Generator Device. 6-1 ISA-Based System Controller with Cache for 80386SX and 80286
Desktop and Portable Compatibles ... . . . 7-1 ISA-Based System Controller with Cache for 80386SX and 80286
Desktop and Portable Compatibles . . . 8-1
Dual Video/Memory Clock Generator ... 9-1 Dual Video/Memory Clock Generator ... 10-1 Dual Video/Memory Clock Generator ... 11-1 VGA Controller . . . 12-1 13 WD90C11, WD90C11A - Enhanced VGAControlier ... 13-1 14 WD90C20, WD90C20A - VGA Flat Panel Display Controller . . . .. 14-1 15 WD90C22 VGA Flat Panel Display Controller ... 15-1 16 WD90C26 VGA Flat Panel Display Controller ... 16-1 17 WD90C30 High Performance Video Controller . . . 17-1 18 WD90C31 High Performance Video Controller with Windows Accelerator . . . .. 18-1 19 WD90C55 VGA LCD Interface ... 19-1 STORAGE DEVICES
20 WD10C01A 21 WD10C27 22 WD33C92A 23 WD33C93B
Winchester Disk Controller . . . 20-1 Data Separator . . . 21-1 Enhanced SCSI Bus Interface Controller ... 22-1 Enhanced SCSI Bus Interface Controller ... 23-1
v
APPENDICES
STORAGE DEVICES (Continued)
24 WD33C95A, WD33C96A -Enhanced Single-ended and Differential
SCSI Bus Interface Controller ... ~ ... 24-1 25 WD37C65C Floppy Disk Subsystem Controller Device ... 25-1 26 WD42C22C Winchester Disk Subsystem Controller Device ... ; ... 26-1 27 WD60C318 Optical Disk Drive Encoder/Decoder ... 27-1 28 WD60C40A . Peripheral Cache Manager Device ... 28-1 29 WD60C80 Error Detection and Correction Chip (EDAC) ... : . 29-1 30 WD61C23A High Performance Hard Disk Controller ... 30-1 31 WD61C40A Peripheral Cache Manager Device ... 31-1
APPENDICES
A· Western Digital Sales Offices ... ; ... A-1 B Western Digital Distributors ... B-1 C Literature Order Information ... ; ... C-1
ALPHANUMERIC TABLE OF CONTENTS
ALPHANUMERIC TABLE OF CONTENTS
Device Section Number Device Section Number
ICS90C61A ... 9 WD61C23A ... 30
ICS90C63 ... 10 WD61C40A ... 31
ICS90C64 ... 11 WD76C10AlLP/LV ... 4
WD10C01A ... 20 WD76C20/LV ... 5
WD10C27 ... 21 WD76C30/LV ... 6
WD16C451 1551 ... 1 WD7710/LP ... 7
WD16C4521552 ... 2 WD7910/LP ... 8
WD16C550 ... 3 WD90COO ... 12
WD33C92A ... 22 WD90C11/11A ... 13
WD33C93B ... 23 WD90C20/20A . ... 14
WD33C95A196A ... 24 WD90C22 ... 15
WD37C65C ... 25 WD90C26 ... 16
WD42C22C ... 26 WD90C30 ... ; ... 17
WD60C31B ... 27 WD90C31 ... 18
WD60C40A ... 28 WD90C55 ... 19
WD60C80 ... 29
vii
DEVICE STATUS DEFINITIONS
Data Sheet and Device Status Definitions
Status in Data Sheet Footer Device Status Definition
ADVANCED INFORMATION Initial Production This data sheet contains information prior to
AND DATE device characterization. Western Digital Cor-
poration reserves the right to change specifica- tions at any time without notice in order to im- prove overall design and operation.
DATE Full Production This data sheet contains final specifications.
The information has been updated and publish- ed as of the date indicated. Western Digital Corporation reserves the right to change specifications at any time without notice in order to improve overall design and operation.
viii
!2& .•
QUALITY, INTERARCHITECTURE & LOW VOLTAGE SOLUTIONS
Western Digital's Quality
From its manufacturing, assembly and test facilities throughout the world, Western Digital is committed to producing the highest quality semiconductor, board-level and intelligent disk drive products avail- able.
The company's goal is to continually improve the reliability of our products through a variety of quality programs, using the most advanced evaluation and analysis tools, and a vast set of qualification and testing procedures. Accordingly, Western Digital en- sures that the quality and reliability of its designs are translated into products of exceptional quality for its OEM and end user customers.
The company implements its "Continuous Process Improvement" program for every chip, board and
drive product, constantly working to reduce cycle time, while striving for superior customer service and technical support.
As one of the industry's most vertically-integrated manufacturers, Western Digital controls the entire manufacturing process, from design to final test.
Ultimately, this ability allows us to yield a higher quality, more reliable product with greater functionality.
This vertical integration, our Interarchitecture ™ ap- proach and our unique set of worldwide resources - including a state-of-the-art,submicron wafer fabrication facility and a fully"robotic drive assembly plant - greatly contribute to our ability to design and build quality into our products;
Western Digital's Interarchitecture
Western Digital designs and manufactures a full range of VLSI products that control the fundamental functions of computing: storage, video, data com- munications, and systems logic. The coordinated design and manufacturing of our products is a process we term Interarchitecture.
As a business approach, Interarchitecture means we consistently communicate with our customers about trends, technology and market requirements, then design our products and services to meet their needs.
We develop our Interarchitecture products together;
the designer of the core logic works with the desig- ner of the video and the intelligent disk drive. By co-designing across all our product lines, we pro- vide full functionality in fewer .chips and increase overall product quality, reliability and compatibility.
In practice, Western Digital's Interarchitecture process gets customers to market faster, . more cost-effectively with a higher-performance product.
Western Digital's Low Voltage Solutions
Western Digital recognizes the importance of power conservation in todays new battery operated com- puters. Our laptop core logic chip sets offer exten- sive power management features. In addition, Western Digital offers devices that require only 3.3 volts for operation rather than the typical 5.0 volts.
LVCMOS offers a greater operating range than the current 5V logic, thereby reducing power consump- tion and extending battery life.
The wide operating range will make it possible to eliminate the power regulator and directly connect a notebook system to a battery, thus increasing power efficiency and reducing component require- ments. The combination of power management, lower operating voltage, and the elimination of the power supply regulator can mean a 35 to 40 per- cent savings in system power.
ix
QUALITY, INTERARCHITECTURE &LOW VOL TAGE SOLUTIONS
Interarchitecture Solutions For Desktop Systems
WD7600A System Chip Set for 80286 or 80386SX desktop systems WQ7700 System Chip Set for 80386SX desktop.systems WD7900 System Chip Se( for
80~86SXdesktop systems
Components:
WD76C10A single-chip core logic
• . memory control, CPU control, DMA interrupts, buffers, AT-bus control
• system speed upto 25 MHz
• .9 micron CMOS design
• 80C286 or 80386SX interface OR:
WD7710 single-chip core logic
• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• system speed up to 25 MHz
• .9 micron CMOS design
• integrated 8K ~che data and TAG RAM
• 80386SX interface OR:
WD7910 single:.chip Core logic
• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• system speed up to 25 MHz
• .9 micron CMOS design
• integrated 8K cache data and TAG RAM.
• 80386SX interface
• VLBI support
WD76C20 single-chip storage
x
• floppy control, IDE control, real-time clock, CMOS· RAM, chip select decodes
• 1.25 micron CMOS design
• ·data transfer in DMA or non-DMA modes
•.. chip select logic generation
WD76C30 single-chip data communications
• serial/parallel I/O control, programmable coprocessor clock, floppy frequency generator, keyboard clock, baud rate generator, AT-bus clock, interrupt multiplexor
• 1.25 micron CMOS design
• FIFO port operation WD90C30 single chip video
• fully integrated VGA video control
• optional video RAMDAC and video clock
• .9 micron CMOS design
ICS90C61A -- video graphics array cloc!c
Western Digitallnterachltecture Intelligent Drives .
Caviar™Drives:
• one-inch, 42, 62,85, and 125 Mbyte fOrmatted capacities, sub-17 milliseconds
• CacheFlow™, adaptive segmented cache
• Automatic head parking, advanced defect management and embedded sector servo control
Piranha TMDrives:
• 3.5-inch, 1 06-and 212-Mbyte formatted capacities, sub-15 milliseconds
• Cache Flow, adaptive segmented cache
• Automatic head parking, advanced defect . management and embedded sector servo control
QUALITY, INTERARCHITECTURE & LOW VOL TAGE SOLUTIONS
Inter architecture Solutions For Portable Systems
WD7600ALP System Chip Set for 80286 or 80386SX portable systems WD7700LP System Chip Set for 80386SX portable systems WD7900LP System Chip 'set for 80386SX portable systems
Components:
WD76C1 OALP single-chip core logic
.• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• extensive set of power management features, . . CPU sleep and auto speed switch modes
• system speed up to 25 MHz
• 80C286 or 80386SX interface
• .9 micron CMOS design OR:
WD7710LP single-chip core logic
• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• extensive set of power management features, CPU sleep a"d auto speed switch modes
• system speed up to 25 MHz .
• 80386SX interface .
• .9 micron CMOS design
• integrated 8K data cache OR:
WD7910LP single-chip core logic
• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• extensive set of power management features, CPU sleep and auto speed switch modes
• system speed up to 25 MHz
• 80386SX interface
• SMI and VLBI support
• .9 micron CMOS design
• integrated 8K data cache WD76C20 single-chip storage
• floppy control, IDE control, real-time clock, CMOS RAM, chip select decodes
• 1.25 micron CMOS design
• data transfer in DMA or non-DMA.
• chip select logic generation
WD76C30 single-chip data communications.
• serial/parallel I/O control, . programmable coprocessor clock, ·floppy frequency generator, keyboard clock, baud rate generator, AT-bus clock, interrupt multiplexor
• 1.25 micron CMOS design
• FIFO port operation
WD90C20AIWD90C22 single-chip video
• full VGA video support with laptop RAMDAC
• optional video clock
• supports 32-color, gray-scale palette (64-color grey-scale with WD90C22)
• .9 micron CMOS design
ICS90C64 -- video graphics array clock
Western Digital Inter architecture Intelligent Drives*
AH260 Tidbit™ Drive:
• 2.5-inch, 0: 75 inches high
• 63.2 Mbyte formatted capRcity
• Sub-16 milliseconds average seek time
• CacheFlow mUlti-segmented, adaptive cache
• 6 power-management modes AH280 Tidbit™ Drive:
• 2.5-inch, 0.75 inches high
• 85.5 Mbyte formatted capacity
• Sub-16 milliseconds average seek time
• Cache Flow multi-segmented, adaptive cache
• 6 power-management modes
xi
QUALITY, INTERARCHITECTURE & LOW VOL TAGE SOLUTIONS
Low Voltage (3.3 Volt) Interarchitecture Solutions
WD7600ALV System Chip Set for 80286 or 80386SX portable systems WD7900LV System Chip Set for 80386SX portable systems
Components:
WD76C10ALV single-chip core !ogic
• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• extensive set cif power management features, CPU sleep and auto speed switch modes
• 3.3 volt operation
• 80C286 or 80386SX interface
• ;9 micron CMOS design OR:
WD7910LV single-chip core logic
• memory control, CPU control, DMA interrupts, buffers, AT-bus control
• extensive set of power management features, CPU sleep and auto speed switch modes
• 3.3 volt operation'
• 80386SX interface
• VLBI support
• .9 micron CMOS design
• integrated 8K data cache WD76C20LV single-chip storage
• floppy control, IDE control, real-time clock, CMOS RAM, chip select decodes
• 3.3 volt operation
• 1.25 micron CMOS design
• data transfer in DMA or non-DMA
• chip select logic generation
WD76C30DLV single-chip data communications
xii
• serial/parallel I/O control, programmable coprocessor clock, floppy frequency generator, keyboard clock, baud rate generator, AT-bus clock, interrupt multiplexor .
• 3.3 volt operation
• 1.25 micron CMOS design
• FIFO port .operation
WD90C26 single-chip LCD video
• full VGA video support with laptop RAMDAC
• 3.3 volt operation
• optional video clock
• supports 64 TrueShade TM, gray shades
• .9 micron CMOS design
ICS90C64 -- video graphics array clock
Western Digital Inter architecture Intelligent Drives·
AH260 TtdbifTM Drive:
• 2.5-inch, 0.75 inches high
• 63.2 Mbyte formatted capacity
• Sub-16 milliseconds average seek time
• Cache Flow mUlti-segmented, adaptive cache
• 6 power-management modes AH280 Tidbit™Drive:
• 2.5-inch, 0.75 inches high
• 85.5 Mbyte formatted capacity
• Sub-16 milliseconds average seek time
• Cache Flow mUlti-segmented, adaptive cache
• 6 power-management modes
* For more information on Western Digital's intel- ligent drives, call 1.714.932.4900.
