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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...
**SL9025  Address Controller                                    <oct88
***Info:...
***Versions:...
***Features:...
**SL9090  Universal PC/AT Clock Chip                            <oct88...
**SL9250  Page Mode Memory Controller (16/20MHz 8MB Max)        <oct88...
**SL9350  Page Mode Memory Controller (16/20/25MHz 16MB Max)    <oct88...
**Other:...
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*VIA...
**SL9XXX   FlexSet family General information
The SL9XXX series seems to have  been designed to work with the 80286,
80386SX and 80386DX, and is  possibly compatible with the 80486. What-
ever CPU used, the chipset  contains the following chips, known as the
"Core AT Logic chips":

SL9011 System  Controller
SL9020 Data Controller (2x for 32bit 386DX)
SL9025 Address Controller
SL9030 Integrated Peripheral Controller

The memory  controller is then selected  based on the  CPU. It appears
that the lineup originally consisted  of the following chips, known as
"Personalized AT Logic":
SL9151 Page Interleave Memory      (80286)
SL9250 Memory Controller           (80386SX)
SL9350 Page Mode Memory Controller (80386DX)

Later updates were:
SL9251   Page Interleave Memory Controller (80386SX)
SL9351   Page Interleave Memory Controller (80386DX)

Further updates were:
SL9252   System and Memory Controller (80386SX)
SL9352   System and Memory Controller (80386DX)

As far  as i can  tell, these chips  only require the addition  of the
SL9020, or  2x in  the case  of the SL9352.  The datasheets  are quite
terse.

These parts and the whole design of the datasheets are very similar to
the chipsets released by Logicstar. I, however, cannot find any record
of a link between the companies. See *Logicstar for details.

**SL9011   System Controller (80286/80386SX/DX, 16/20/25MHz)    <Jan90...
**SL9020   Data Controller                                      <Jan90...
**SL9025   Address Controller                                   <Jan90...
**SL9030   Integrated Peripheral Controller                     <Jan90...
**SL9090/A Universal PC/AT Clock Chip                           <oct88...
**SL9095   Power  Management Unit                                    ?...
**SL9151   80286 Page Interleave Memory Controller (16-25MHz)        ?...
**SL9250   80386SX Page Mode Memory Controller (16/20MHz 8MB)        ?...
**SL9251   80386SX Page Interleave Memory Controller         <04/13/90...
**SL9252   80386SX System and Memory Controller              <06/12/90...
**SL9350   80386DX Page Mode Memory Controller (16-25MHz 16MB)       ?...
**SL9351   80386DX Page Interleave Memory Controller (33MHz)         ?...
**SL9352   80386DX System and Memory Controller              <06/12/90...
**SLXXXX   Other chips...
**
**VT82C470     "Jupiter", Chip Set (w/o cache) 386 [no datasheet]    ?
**VT82C475     "Jupiter", Chip Set (w/cache) 386   [no datasheet]    ?
**VT82C486/2/3 "GMC chipset"            [no datasheet, some info]    ?...
**VT82C495/480 "Venus" Chip Set                    [no datasheet]    ?
**VT82C495/491 ? EISA Chip Set          [no datasheet, some info]  <93...
**VT82C496G    Pluto, Green PC 80486 PCI/VL/ISA System       <05/30/94...
**VT82C530MV   3.3V Pentium chipset [no datasheet, some info]<05/30/94...
**VT82C570M    Apollo Master, Green Pentium/P54C             <06/22/95...
**VT82C580VP   Apollo VP,  Pentium/M1/K5 PCI/ISA System      <02/15/96...
**VT82C580VPX  Apollo VPX, VPX/97, Pentium with 66/75MHz Bus <01/09/97...
**VT82C590     Apollo VP2, VP2/97, Single-Chip Pentium 66MHz <01/10/97...
**VT82C597/AT  Apollo VP3, Single-Chip for Pentium with AGP  <10/03/97...
**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
***Notes:...
***Info:...
***Configurations:...
***Features:
o   High Integration
    - VT82C685 system controller
    - VT82C687 data buffer
    - VT82C586 PCI to ISA bridge
    - Six TTLs for a complete main board implementation
o   Flexible CPU Interface
    - 64 bit Pentium-Pro CPU interface
    - CPU external bus speed up to 66 MHz
    - Supports Pentium-Pro CPU multi-phase bus protocol for split 
      transactions
    - Supports four level deep in-order-queue and deferred transaction
    - Supports APIC multiprocessor protocol
    - GTL+TM bus driver and receiver compatible with Intel 
      specification
o   Fast DRAM Controller
    - Sixteen level (quadwords) of CPU to DRAM write buffers
    - Sixteen level (quadwords) of DRAM to CPU read buffers
    - Fast Page Mode/EDO/Burst EDO/Synchronous-DRAM support in a mixed 
      combination
    - Mixed 1M/2M/4M/8M/16MxN DRAMs
    - Supports 2-way bank-interleaving of 16 MB SDRAM
    - Supports 2-way and 4-way bank-interleaving of 64 MB SDRAM
    - 6 banks up to 1 GB DRAMs
    - Flexible row and column addresses
    - Optional bank-by-bank ECC and parity generation, detection, and 
      correction capability
    - ECC with 1 bit error correction and multi-bit error detection 
      capability
    - 3.3v and 5v DRAM without external buffers
    - Burst read and write operation
    - 5-1-1-1-1-1-1-1 back-to-back Burst EDO and Synchronous DRAM 
      transfer at 66 MHz
    - 532 MB/s peak transfer rate for Burst EDO and Synchronous DRAMs 
      at 66 MHz
    - 266 MB/s peak transfer rate for EDO DRAMs at 66 MHz
    - BIOS shadow at 16 kB increment
    - System management memory remapping
    - Decoupled and burst DRAM refresh with staggered RAS timing
    - Programmable refresh rate, CAS-before-RAS refresh and refresh 
      on populated banks only
o   Intelligent PCI Bus Controller
    - 32 bit 3.3/5v PCI interface
    - Synchronous divide-by-two PCI bus interface
    - PCI master snoop ahead and snoop filtering
    - Concurrent PCI master/CPU/IDE operations
    - Synchronous Bus to CPU clock with divide-by-two from the CPU 
      clock
    - Automatic detection of data streaming burst cycles from CPU to 
      the PCI bus
    - Sixteen levels (double-words) of CPU to PCI posted write buffers
    - Byte merging in the write buffers to reduce the number of PCI 
      cycles and to create further PCI bursting possibilities
    - Zero wait state PCI master and slave burst transfer rate
    - PCI to system memory data streaming up to 132 MByte/sec
    - Sixteen levels (double-words) of post write buffers from PCI 
      masters to DRAM
    - Sixteen levels (double-words) of prefetch buffers from DRAM for 
      access by PCI masters
    - Enhanced PCI command optimization (MRL, MRM, MWI, etc.)
    - Complete steerable PCI interrupts
    - Supports CPU write-back forward to PCI master read to minimize 
      PCI read latency
    - Supports CPU write-back merged with PCI master post-write to 
      minimize DRAM utilization
    - Provides transaction timer to fairly arbitrate between PCI 
      masters
    - Supports five PCI masters in addition to PCI-ISA/IDE/USB bridge
    - PCI-2.1 compliant
o   Enhanced Master Mode PCI IDE Controller with Extension to 
    UltraDMA-33
    - Dual channel master mode PCI supporting four Enhanced IDE 
      devices
    - Transfer rate up to 22 MB/sec to cover PIO mode 4 and multi-word 
      DMA mode 2 drives and beyond
    - Extension to UltraDMA-33 interface for up to 33 MB/sec transfer 
      rate
    - Sixteen levels (doublewords) of prefetch and write buffers
    - Interlaced commands between two channels
    - Bus master programming interface for SFF-8038 rev.1.0 and 
      Windows-95 compliant
    - Full scatter and gather capability
    - Support ATAPI compliant devices
    - Support PCI native and ATA compatibility modes
    - Complete software driver support
o   Universal Serial Bus Controller
    - USB v.1.0 and Intel Universal HCI v.1.1 compatible
    - Eighteen level (doubleword) of data FIFOs with full scatter 
      and gather capabilities
    - Root hub and two function ports with integrated physical 
      layer transceivers
    - Legacy keyboard and PS2 mouse support
o   Plug and Play Controller
    - Dual interrupt and DMA signal steering with plug and play 
      control
    - Microsoft Windows 95TM and plug and play BIOS compliant
o   Sophisticated Power Management and OnNow/ACPI Unit
    - Normal, doze, sleep, suspend and conserve modes
    - System event monitoring with two event classes
    - Two general purpose timers
    - Sixteen general purpose output ports
    - Seven external event input ports with programmable SMI condition
    - Primary and secondary interrupt differentiation for individual 
      channels
    - Clock throttling control
    - Multiple internal and external SMI sources for flexible power 
      management models
    - APM 1.2 compliant models
    - Extension to OnNow and ACPI (Advanced Configuration and Power 
      Interface) support
o   PCI to ISA Bridge
    - Integrated 82C206 peripheral controller
    - Integrated keyboard controller with PS2 mouse supports
    - Integrated DS12885 style real time clock with extended 128 Byte 
      CMOS RAM
    - Integrated USB controller with root hub and two function ports
    - Integrated master mode enhanced IDE controller with enhanced 
      PCI bus commands
    - PCI-2.1 compliant with delay transaction
    - Four double-word line buffer between PCI and ISA bus
    - Supports type F DMA transfers
    - Fast reset and Gate A20 operation
    - Edge trigger or level sensitive interrupt
    - Flash EPROM, 2 MB EPROM and combined BIOS support
o   Built-in Nand-tree pin scan test capability
o   0.5um mixed voltage, high speed and low power CMOS process
o   208 pin PQFP for VT82C685
o   208 pin PQFP for VT82C586
o   208 pin PQFP for VT82C687

**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...
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