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**CS4041/5 CHIPSet                  (84041/84045)              2/10/95
***Info:
The  CS4041 is  the first  product in  the GreenCHIPS  CHIPSet product
portfolio  of Chips  and Technologies,  Inc.  It  provides all  of the
system  logic  for  implementing   a  high  performance,  Energy  Star
compliant 486 PC/AT design, while maintaining an extremely competitive
cost structure. The powerful feature set includes the CHIPS "standard"
system  blocks and  offers a  new  level of  system integration  while
addressing  the  ever  evolving  requirements that  the  market  place
demands. It is 100% PC/AT  compatible and directly supports the 486DX,
486DX2, 486DX4, 486SX  and 486 derivatives that support  the CPU write
back cache architecture.

The high performance CHIPSet consists of the F84041 Systems Controller
and F84045 GreenCHIPS IPC. The F84041 System Controller is packaged in
a   208-pin    PQFP   and   integrates   the    major   system   logic
functions.  Included  in  the   F84041  is  the  CHIPS  patented  Page
Interleave  DRAM  controller, high  performance  cache controller,  VL
local bus  controller, ISA bus controller, power  management module, a
local bus IDE controller and fully compatible 8042 keyboard controller
with PS/2 mouse support. The companion F84045 is packaged in a 100 pin
PQFP  and   contains  the  industry   standard  Integrated  Peripheral
Controller (IPC) which includes the DMA controllers, timers, interrupt
controllers and real time clock.

The enhanced feature set of  GreenCHIPS DRAM and cache controllers are
perfect  for   today's  High  Performance  PC/AT   designs.  The  page
interleave DRAM controller offers  high performance as well as extreme
flexibility in  supporting 486 memory subsystems.  The DRAM controller
supports up to eight banks of memory that can be configured with 256K,
1M, 4M or 16M memory  devices. Page interleaving, timing modes, memory
mix options,  direct drive support  and block by block  parity support
can  be tuned to  meet the  most optimum  requirements for  the system
design. In  addition, the high performance  secondary cache controller
provides  options  that can  be  optimized  for  performance, cost  or
both.   The  direct   mapped  cache   architecture   employs  internal
comparators  with external TAG  and data  SRAM that  can operate  in a
write-through  or write-back  mode. Cache  sizes  from 64K  to 1M  are
supported with  flexible single bank  or dual bank support  that allow
flexible timing mode selection based on CPU speed and SRAM speed.

The  "Green" in  GreenCHIPS comes  from the  Power  management support
integrated in  the CHIPSet. The  CS4041 provides the perfect  level of
power management support for  Energy Star compliant desktops. Included
in the  power management section  is direct support for  SMM operation
and clock switching for the popular 486 derivatives. Two event timers,
programmable I/O  pins, I/O  restart and programmable  event detection
provide a  wide range  of options for  power management  selection and
customization.

The CS4041 provides new levels of integration in system logic CHIPSets
by providing  a local bus  IDE interface and keyboard  controller. The
robust local bus IDE interface  is decoupled from the AT state machine
and  does not  use a  VL local  bus load.  The interface  is versatile
enough to support  up to eight IDE drives allowing  each drive to have
unique command settings.  The result is the best  performance for each
drive type  allowing significant  performance gains over  the standard
ISA  interface. This  is accomplished  without any  compromise  to the
standard VL local bus.

CPUs Supported
oIntel 486 CPUs
oAMD 486 CPUs
oCyrix 486 CPUs
oIBM 486 CPUs
oL1 (CPU) write back cache fully supported
oSMI support (both Intel and Cyrix)
oClock Frequencies:
 25MHz, 33MHz, 40MHz,  50MHz

***Configurations:...
***Features:...
**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                                ?...
**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...
*Headland/G2...
**GC101/102     12/16MHz PC/AT Compatible Chip Set             c:Feb88
***Info:...
***Configurations:...
***Features:...
**GC101/102/103 12/16MHz PC/AT Compatible Chip Set + EMS 4.0   c:Jul89...
**GCK113        80386 AT Compatible Chip Set                   c:oct89...
**GCK181        Universal PS/2 Chip Set                        c:Mar89...
**HT11          Single 286 AT Chip [no datasheet]               <Aug90...
**HT12/+/A      Single 286 AT Chip with EMS support            c:Aug90...
**HT18          80386SX Single Chip                            c:Sep91...
**HT21          386SX/286 Single Chip (20 MHz)                 c:Aug91...
**HT22          386SX/286 Single Chip (25 MHz)                 c:Sep91...
**HT25          3-volt Core Logic for 386SX                    c:Dec92...
**HT35          Single-Chip Peripheral Controller [partial info]     ?...
**HTK320        386DX Chip Set                                 c:Sep91...
**HTK340        "Shasta" 486 Chip Set                          c:Jun92...
**Support Chips:
**HT44          Secondary Cache                                c:Jun92...
**Other:
HT209D   VGA
HT216-32 Local Bus VGA Controller

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