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**CS8231 TURBO CACHE-BASED 386/AT (82C301/307/303/304/305/306) c86
***Info:
The CS8231 TURBO CACHE BASED 386/AT CHIPSet is a seven chip VLSI
implementation of most of the system logic to implement a CACHE BASED
iAPX 386 based system. The CHIPSet is designed to offer a 100% PC AT
compatible integrated solution. The flexible architecture of the
CHIPSet allows it to be used in any iAPX386 based system design, such
as CAD/CAE workstations, office systems, industrial and financial
transaction systems.
The CS8231 CHIPSet combined with CHIP's 82C206, Integrated Peripherals
Controller, provides a complete PC AT compatible system using only 40
components plus memory devices.
The CS8231 CHIPSet consists of one 82C301 Bus Controller, one 82C307
Integrated CACHE/DRAM controller, one each of 82A303 and 82A304
Address Bus Interfaces, two 82B305 Data Bus Interfaces, and a 82A306
Control Signal Buffer.
The CHIPSet supports a local CPU bus, a 32-bit system memory bus, and
AT buses as shown in the system diagram below. The 82C301 and 82A306
provide the generation and synchronization of control signals for all
buses. The 82C301 also supports an independent AT bus clock, and
allows for dynamic selection of the processor clock between the 16M
Hz, 20MHz, or 25MHz clocks and the AT bus clock. The 82A306 provides
buffers for bus control signals in addition to other miscellaneous
logic functions.
The 82C307 is a high performance and high integration CACHE/DRAM
controller designed to interface directly to the 80386 micro-
processor. It maintains frequently accessed code and data in high
speed memory, allowing the 80386 to operate at its maximum rated freq-
uency with near zero waitstates. By integrating DRAM control func-
tions on-chip, it supports simultaneous activation of cache and DRAM
access, thereby minimizing the cache miss cycle penalty. It has
hardware support to allow the user to designate up to four blocks (of
variable size from 2KB to 128KB) of main memory as non-cacheable
address space. This feature is important for compatibility issues
when operating in a multiprocessing or LAN environment, or where dual-
port memory is used, and to designate certain regions of video RAM as
non-cacheable. This feature eliminates the need to use very fast PALs
externally to decode non-cacheable regions and gives the user much
more flexibility. Optional EDC support logic is integrated on to the
82C307 which allows it to interface to any of the generically
available 32-bit Error Detection and Correction Circuits to realize a
highly reliable memory subsystem.
Cache coherency is maintained during DMA cycles by channeling all acc-
esses through the cache controller logic. During DMA read operations,
the cache RAM is not accessed and data is retrieved from the main
memory. During DMA write operations, if a cache hit is detected, the
cache RAM is updated and the corresponding tag validated. Cache
coherency is maintained at all times, with no performance penalty.
The 82C307 is available in a 100 pin PFP package.
The 82A303 and 32A304 interface between all address buses, and the
addresses needed for proper data path conversion. Two 828305 are used
to interface between the local, system memory, and at data buses. In
addition to having high current drive, they also perform the
conversion necessary between the different sized data paths.
***Configurations:...
***Features:...
**CS8232 CMOS 386/AT (82C301/302/303/304/305/306) c86...
**CS8233 PEAK/386 AT (Cached) (82C311/82C315/82C316) c:Dec90...
**CS8236 386/AT (82C301/2/3/4/5/6/206) c86...
**CS8237 TURBO CACHE-BASED 386/AT (82C301/7/3/4/5/6/206) c86...
**CS8238 CHIPS/280 & 281 (386 MCA)(82C321/322/325/223/226) c:Aug89...
**CS82310 PEAK/DM 386 AT (82C351/82C355/82C356) c91...
**CS8281 NEATsx (386SX) (82C811/812/215/206) c:Dec89...
**CS8283 LeAPset-sx (82C841/82C242/82C636) c:Mar90...
**CS8285 PEAKsx (82C836/82C835) c91...
**CS8288 CHIPSlite-sx (82C836/82C641/82C835) c?...
**CS4000 WinCHIPS (64200/84021/84025) c92...
**CS4021 ISA/486 (84021/84025) c92...
**CS4031 CHIPSet (84031/84035) 5/10/93...
**CS4041/5 CHIPSet (84041/84045) 2/10/95...
**CB8291 ELEAT [no datasheet] c90...
**CB8295 ELEATsx [no datasheet] c90...
**82C100 IBM PS/2 Model 30/Super XT ?...
**82C110 IBM PS/2 Model 30/Super XT ?
***Notes:...
***Info:
The 82C110 is a single chip implementation of most of the system logic
necessary to implement a super XT compatible system with PS/2 Model 30
functionality using either an 8086 or 8088 microprocessor. The 82C110
can be used with either 8 or 16-bit microprocessors. The 82C110
includes features which will enable the PC manufacturer to design a
super PS/2 Model 30/XT compatible system with the highest performance
at 10 MHz zero wait state system with an 8086, the highest
functionality with dual clock and 2.5 MB DRAM {with integrated
Extended Memory System control logic}, the highest integration with
the lowest component count SMT design.
The 82C110 can be combined with-CHIPs’ 82C601 Multifunction Controller
and 82C451 VGA Graphics Controller to provide a high performance, high
integration PS/2 Model 30 type system.
The 82C110 supports most of the peripheral functions on the PS/2 Model
30 planar board; 8284 compatible clock generator with the option of 2
independent oscillators, 8288 compatible bus controller, 8237 comp-
atible DMA controller, 8259 compatible interrupt controller, 8254
compatible timer/counter, 8255 compatible peripheral I/O port. XT
Keyboard interface, Parity Generation and Checking for DRAM memory and
memory controller for DRAM memory sub-system.
The 82C110 enables the user to add PS/2 Model 30 superset func-
tionality on the planar board: dual clock, with synchronized switching
between the two, clocks. built-in Lotus-Intel-Microsoft (LIM) EMS
support for up to 2.5 Megabytes of DRAM.
The 82C110 supports a very flexible memory architecture. The DRAM
controller supports 64K, 256K and 1M DRAMs. These DRAMs gen be
organized in four banks of up to a maximum of 2.5 MB on the planar
board. The 2.5 MB memory can be implemented with 2 banks of 7M X 1
DRAMs, partitioned locally as 540KB of real memory and 1,875 MB of EMS
memory. The 82C110 is packaged in a 100-pin plastic flatpack.
***Configurations:...
***Features:...
**82C235 Single Chip AT (SCAT) c89...
**82C836 Single Chip 386sx (SCATsx) <91...
**F8680/A PC/CHIP Single-Chip PC c93...
**
**Support Chips:
**64200 (Wingine) High Performance 'Windows Engine' c:Oct91...
**82C206 Integrated Peripheral Controller c86...
**82C601/A Single Chip Peripheral Controller <08/30/90...
**82C607 Multifunction Controller <Jun88...
**82C710 Universal Peripheral Controller c:Aug90...
**82C711 Universal Peripheral Controller II c:Jan91...
**82C712 Universal Peripheral Controller II c:Jan91...
**82C721 Universal Peripheral Controller III c:May93...
**82C735 I/O Peripheral Controller With Printgine c:Jul93...
**82C835 Single CHIP 386sx AT Cache Controller c:Apr91...
**F87000 Multi-Mode Peripheral Chip 11/23/93...
**Other:...
**Disk:...
**Video:...
*Contaq . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82395SX Smart Cache 12/17/90
***Notes:...
**82396SX Smart Cache 12/17/90...
**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...
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