[Home] [This version is outdated, a new version is here]
*Title...
*Search:...
*Read Me/FAQ/General Info...
*_IBM...
*ACC Micro...
*ALD...
*ALi...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82396SX Smart Cache 12/17/90
***Notes:...
***Info:...
***Versions:...
***Features:...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C700 FireStar c:97
***Info:...
***Configurations:...
***Features:...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:
OPTi 82C200 - ChromaCast LCD-VGA chipset
OPTi 82C205 - LCD panel controller / scalar
OPTi 82C264 - 2D VGA controller
OPTi 82C265 - Video ????????????????????????????
OPTi 82C268 - Video ????????????????????????????
OPTi 82C611 - EIDE VLB
OPTi 82C611A - EIDE VLB
OPTi 82C621 - PCI-to-IDE controller
OPTi 82C621A - PCI-to-IDE controller
OPTi 82C824 - FireFox PCI to PCMCIA Controller
OPTi 82C825 - FireBridge II PCI to PCMCIA Controller
OPTi 82C814 - Docking Station Controller for laptops (PCI-to-PCI bridge)
OPTi 82C842 - PCI-to-IEEE 1393 FireWire
OPTi 82C832 - ?????????????????????????????????????????
OPTi 82C861 - PCI-to-USB Bridge c1997
OPTi 82C862 - PCI-to-USB Bridge 4x port
OPTi 82C863 - PCI-to-USB Bridge 2x port
OPTi 82C871 - PCI-to-USB Bridge + Sound Blaster compatibility and USB 2.0
OPTi 82C916 - Audio, ISA, serial CODEC) used in combination with Vendetta chipset 82C750
OPTi 82C924 - Audio, ISA
OPTi 82C925 - ISA Audio Controller (replaces the 924)
OPTi 82C928 - (MAD16) ISA Audio Controller (Emulates Sound Blaster Pro) c1993
OPTi 82C929 - (MAD16 Pro) ISA Audio Controller (Emulates Sound Blaster Pro) c1994
OPTi 82C930 - ISA Audio Controller (Emulates Sound Blaster Pro, AdLib)
OPTi 82C931 - ISA Audio controller (Emulates Sound Blaster Pro, AdLib)
OPTi 82C933 - Audio ?????????????????????????????
OPTi 82C935 - EV1935 ECTIVA MachOne PCI Audio
OPTi 82C941 - Wavetable chip, has something to do with 82C930
OPTi 82C950 - (MAD32) Audio/Modem controller (Emulates Sound Blaster Pro) c1994
OPTi 92C160 - Clock Generator for 92C168
OPTi 92C168 - LCD VGA controller c1993
OPTi 92C178 - LCD VGA controller with blt c1993
OPTi 92C264 - 2D VGA controller
-------------------------------------------------
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
**WD7855 System controller for 80386SX <09/25/92
***Notes:...
***Info:
1.3 GENERAL DESCRIPTION
Western Digital's WD7855/LV single chip ISA System Controller is
designed for high-performance IBM PC/AT compatible platforms.
Available for desktop, portable or low voltage (LV) applications, the
WD7855/LV supports the 803868X microprocessor operating at speeds up
to 33 MHz.
The WD7855/LV incorporates seven high-performance system controller
functions which include the ISA bus interface, CPU interface, flexible
memory controller, DMA controller, interrupt controller, timers and
advanced power management. In combination with Western Digital’s
support devices, the WD7855/LV provides a highly flexible and powerful
desktop or portable platform design.
The WD7855/LV is designed to work with all variations of 80386SX
compatible microprocessors. It supports the traditional dynamic CPUs
with the industry's only Processor Power-down feature to minimize
power consumption. The WD7855/LV fully supports static microprocessors
such as the AMD Am386SXL with CPU Stop Clock, System Management
Interrupt and I/O trapping features. The WD7855/LV incorporates
special circuitry which allows for optimizing the cache performance
and maintaining cache coherency with cached CPUs such as the Cyrix
Cx4868LC.
1.3.1 Desktop Applications
The WD7855 provides a high performance solution with a flexible memory
controller architecture, including support for eight banks of two way
interleave memory and EMS 4.0 hardware. The WD7855/LV can fully
support an external look-aside cache or a combination primary and
secondary cache. This feature makes it particularly suitable for use
with cached microprocessors such as Cyrix Cx486SLC where it maintains
cache coherency via its built-in bus snooping capability. In addition,
the WD7855/LV supports Video Local Bus Interface (VLBI) for enhanced
graphics performance.
1.3.2 Portable Applications
The WD7855LV is an ideal choice because of its advanced power
management features and power saving 3.3 volt operation which delivers
long battery life in a compact footprint. This makes it a perfect
choice for laptop, notebook, pen based and palmtop computers.
The eight bank memory controller on the WD7855LV provides the user
with great flexibility in the selection of 3.3 volt DRAMs to meet
system memory requirements in low voltage platforms. The WD7855LV
memory controller supports JEDEC standard 3.3 volt DRAM in various
configurations, including the JEIDA standard 88-pin DRAM card.
The WD7855/LV can be paired with the appropriate support devices from
Western Digital to deliver the most efficient solution for any
platform. For 5 volt desktop or portable platforms, the WD7855LV can
be used with the WD76C20 Peripheral Controller and the WD76C30 I/O
Controller. Alternatively, the WD7855 can be used with the WD7615
Buffer Manager device and a generic Super I/O chip to implement a low
cost desktop platform. For 3.3 volt applications, the WD7855LV can be
used with the WD76C20ALV and WD76C30ALV, both of which incorporate
level translators (split rail operation). For subnotebook and palmtop
type applications, WD7625LV buffer manager can be added to the
WD7855LV based solution to achieve a very compact footprint.
The WD7855/LV is a fourth generation system controller device derived
from core chips with proven compatibility and design maturity in
several of the industry’s leading desktop and portable platforms.
Designed with the state of the art 0.9 micron high performance CMOS
process, the WD7855/LV family maintains architectural compatibility
with Western Digital's WD7600 and WD7700 systems logic chip sets while
incorporating many additional performance enhancements.
***Configurations:...
***Features:...
**WD7900/LP/LV System Chip Set for 80286 or 80386SX (Cache) <11/25/91...
**WD8110 System controller for 80386DX/486 <11/30/93...
**
**Support Chips:
**WD76C20x Floppy, RTC, IDE and Support Logic Device <11/25/91...
**WD76C30x Perip. Ctrl, Interrupt Multiplex, and Clock Gen <11/18/91...
**WD7615 Desktop Buffer Manager <04/15/92...
**WD7625 Desktop Buffer Manager <10/01/92...
**WD8120LV Super I/O [no datasheet] ?
**Other Chips:...
*Winbond...
*ZyMOS...
*General Sources:...
(c) Copyright mR_Slugs Warehouse - All rights Reserved