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**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...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**5571           (Trinity) Pentium PCI/ISA Chipset (75MHz)   <12/09/96
***Info:...
***Configurations:...
***Features:...
**5581/5582      (Jessie)  Pentium PCI/ISA Chipset (75MHz)   <04/15/97...
**5591/5592/5595 (David)   Pentium PCI A.G.P. Chipset        <01/09/98...
**5596/5513      (Genesis) Pentium PCI Chipset               <03/26/96...
**5597/5598      (Jedi)    Pentium PCI/ISA Chipset           <04/15/97...
**530/5595       (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x            SoC (System-on-chip)                        <03/14/02...
**
**Support chips:
**85C206     Integrated Peripheral Controller [no datasheet]         ?...
**5595       Pentium PCI System I/O                          <12/24/97...
**950        LPC I/O                                         <07/16/99...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
**SL82C470   'Mozart' 486/386 EISA chipset                     c:Dec91
***Info:
The SL82C470 chip set provides  a very high performance.  highly inte-
grated and cost-effective implementation for personal computer systems
based on the  standard EISA bus.  It supports  both 386DX and 486DX/SX
CPUs over the entire performance range, from 20Mhz to 50Mhz.  The chip
set  can  operate in  either  "conventional"  or "concurrent"  config-
uration.  Under the conventional configuration, the cache subsystem is
dedicated to bus snooping when  a DMA or master device becomes active.
Under the concurrent  configuration, the CPU-cache operation continues
while  bus snooping  is  performed for  the  DMA or  master device  to
explore maximum  concurrency between the  CPU and the EISA  bus.  Only
ten  TTLs are  required for  a complete  motherboard design  under the
conventional  configuration in  addition to  the chip  set  and memory
devices.  Five  additional  TTLs   are  required  for  the  concurrent
configuration.  A complete EISA  system of either configuration can be
easily implemented on a baby AT sized motherboard.

The  SL82C470 chip  set consists  of three  160-pin PQFP  devices: the
SL82C471  integrated  cache/DRAM  controller,  the SL82C472  EISA  bus
controller and the SL82C473 DMA controller.

SL820471 Cache/DRAM Controller

The  SL82C47l  Cache/DRAM  controller  controls  the  cache  and  DRAM
accesses from  the CPU,  EISA/ISA masters and  DMA devices.   The chip
adapts a write-back cache  scheme to minimize the interference between
the CPU-cache and DMA/master  during their concurrent operations.  The
cache  size ranges from  64KB to  1MB with  advanced features  such as
2-1-1-1  burst  line fill.   Snoop-filtering,  local  bus support  and
programmable non-cacheable and  write-protected regions. The page mode
DRAM controller supports 1 to 4 banks of DRAMS up to 256MB.  A mixture
of 256KB, 1MB.  4MB and 16MB DRAMs is supported.  The video and system
BIOS  can  be  shadowed   or  cached  independently.   The  cache-DRAM
subsystem allows zero wait state burst mode DMA transfers to take full
advantage of the high bandwidth of the EISA bus.

The DRAM  data bus can either  be connected directly to  the CPU local
bus or  be buffered externally,  The control signals for  the external
buffers are generated by the SL82C471.

SL82C472 EISA Bus Controller

The  SL82C472  EISA  bus  controller translates  bus  control  signals
between the  CPU, EISA/ISA and DMA  masters and slaves.  The chip also
includes buffers  and byte/word swap  logic between the CPU  (or DRAM)
and the EISA bus. The  bus conversion and data alignment are performed
automatically.

The  SL82C472 includes two  8259 interrupt  controllers and  four 8254
timer channels  modified for 100%  EISA compatibility.  The  chip also
includes parity generation and check logic and NMI and timeout logic.

SL82C473 EISA DMA Controller

The SL82C473  DMA controller implements  seven EISA DMA  channels. the
system arbiter and the co-processor interface logic.  The DMA control-
ler  supports compatible  type  A,  type B  and  type  C (burst)  mode
operations  with  the  buffer  chaining  capability.   The  multilevel
rotating priority  arbitration with  fail-safe timeout  is implemented
for the  system arbiter.  Six  sets of slot-specific  master handshake
signals (MACK  and MREQ)  are provided  directly without  any external
components.

The address latches and buffers for  the EISA bus are also included in
the SL82C473.

***Configurations:...
***Features:...
**SL82C490   'Wagner' 486?              [no datasheet]               ?...
**SL82C550   'Rossini' Pentium          [no datasheet]            c:95...
**
**Support Chips:
**SL82C365    Cache Controller (for 386DX/SX)                     c:91...
**SL82C465    Cache Controller (for 486/386DX/SX)                 c:91...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
**VT82C597/AT  Apollo VP3, Single-Chip for Pentium with AGP  <10/03/97
***Info:
The  Apollo-VP3  is  a  high performance,  cost-effective  and  energy
efficient chip set  for the implementation of AGP /  PCI / ISA desktop
and notebook personal computer systems based on 64-bit Socket-7 (Intel
Pentium and Pentium MMX; AMD K5 /  5k86 and K6 / 6k86; and Cyrix / IBM
6x86 / M2) super-scalar processors.

The  Apollo-VP3 chip set  consists of  the VT82C597  system controller
(472 pin BGA) and the VT82C586B PCI to ISA bridge (208 pin PQFP).  The
VT82C597 system  controller provides superior  performance between the
CPU,  optional synchronous  cache, DRAM,  AGP  bus, and  PCI bus  with
pipelined,  burst,  and  concurrent  operation.  For  pipelined  burst
synchronous  SRAMs, 3-1-1-1-1-1-1-1  timing can  be achieved  for both
read  and  write  transactions  at  66  MHz.   Four  cache  lines  (16
quadwords)  of  CPU/cache  to   DRAM  write  buffers  with  concurrent
write-back capability are included on  chip to speed up cache read and
write miss cycles.

The  VT82C597  supports  six banks  of  DRAMs  up  to 1GB.   The  DRAM
controller  supports standard  Fast  Page Mode  (FPM) DRAM,  EDO-DRAM,
Synchronous DRAM (SDRAM), and SDRAM-II  with Double Data Rate (DDR) in
a flexible mix / match  manner.  The Synchronous DRAM interface allows
zero  wait state bursting  between the  DRAM and  the data  buffers at
66Mhz.  The six banks of DRAM  can be composed of an arbitrary mixture
of 1M / 2M / 4M / 8M / 16MxN DRAMs.  The DRAM controller also supports
optional ECC (single-bit error  correction and multi-bit detection) or
EC (error checking) capability separately selectable on a bank-by-bank
basis.

The VT82C597  also supports full  AGP v1.0 capability for  maximum bus
utilization including  2x mode  transfers, SBA  (SideBand Addressing),
Flush/Fence commands,  and pipelined  grants.  An eight  level request
queue plus a  four level post-write request queue  with thirty-two and
sixteen  quadwords of  read  and write  data  FIFO's respectively  are
included   for  deep   pipelined  and   split  AGP   transactions.   A
single-level GART  TLB with 16  full associative entries  and flexible
CPU/AGP/PCI  remapping control  is also  provided for  operation under
protected mode operating environments.

The VT82C597  supports two 32-bit 3.3  / 5V system buses  (one AGP and
one  PCI) with  64-bit to  32-bit  data conversion.   The 82C597  also
contains a built-in bus-to-bus bridge to allow simultaneous concurrent
operations  on each  bus.   Five levels  (doublewords)  of post  write
buffers are  included to allow  for concurrent CPU and  PCI operation.
Consecutive  CPU addresses are  converted into  burst PCI  cycles with
byte merging  capability for optimal  CPU to PCI throughput.   For PCI
master  operation,  forty-eight  levels  (doublewords) of  post  write
buffers  and  sixteen levels  (doublewords)  of  prefetch buffers  are
included for concurrent PCI  bus and DRAM/cache accesses.  The chipset
also  supports enhanced  PCI  bus commands  such as  Memory-Read-Line,
Memory-Read-Multiple  and  Memory-Write-Invalid  commands to  minimize
snoop overhead.   In addition, the chipset  supports advanced features
such as  snoop ahead,  snoop filtering, L1  write-back forward  to PCI
master  and  L1 write-back  merged  with  PCI  post write  buffers  to
minimize PCI master read  latency and DRAM utilization.  The VT82C586B
PCI to ISA bridge supports  four levels (doublewords) of line buffers,
type F DMA transfers and  delay transaction to allow efficient PCI bus
utilization and (PC I-2.1  compliant).  The VT82C586B also includes an
integrated  keyboard  controller with  PS2  mouse support,  integrated
DS12885  style  real time  clock  with  extended  256 byte  CMOS  RAM,
integrated master  mode enhanced IDE controller with  full scatter and
gather capability  and extension to UltraDMA-33 /  ATA-33 for 33MB/sec
transfer rate, integrated USB interface with root hub and two function
ports  with  built-in  physical  layer transceivers,  Distributed  DMA
support, and  OnNow / ACPI compliant advanced  configuration and power
management interface.   A complete main board can  be implemented with
only six TTLs.

The Apollo  VP3 chipset is  ideal for high performance,  high quality,
high energy efficient and high  integration desktop and notebook AGP /
PCI / ISA computer systems.

***Configurations:...
***Features:...
**VT82C598MVP  Apollo MVP3,Single-Chip 66/75/83/100MHz & AGP <09/22/97...
**VT8501       Apollo MVP4,Single-Chip 66-100MHz & AGP       <11/04/98...
**VT82C680     Apollo P6, Pentium-Pro Chip Set               <08/30/96...
**Support chips:
**VT82C505     Pentium/486 VL to PCI Bridge                  <05/30/94...
**VT82C586/A/B PCI Integrated Peripheral Controller          <10/13/96...
**VT82C596/A   Mobile PCI Integrated Peripheral Controller   <11/05/97...
**VT82C686A/B  PCI Super-I/O Integrated Peripheral Ctrl.     <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...

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