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**82495XP/490XP Cache Controller / Cache RAM (for i860)       06/05/91
***Notes:...
***Info:...
***Features:...
**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...
**540            (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99
***Info:
The  single  chipset, SiS540,  provides  a  high performance/low  cost
Desktop solution  for the Super Socket  7 series CPUs  based system by
integrating a  high performance North Bridge,  advanced hardware 2D/3D
GUI  engine  and  Super-South  bridge. In  addition,  SiS540  provides
system-on-chip solution  that complies  with Easy PC  Initiative which
supports Instantly Available/OnNow  PC technology, USB, Legacy Removal
and Slotless Design and FlexATX form factor.

By integrating  the Ultra-AGP technology and  advanced 128-bit graphic
display interface, SiS540  delivers high performance and up  to 2 GB/s
memory  bandwidth. Furthermore, SiS540  provides powerful  slice layer
decoding DVD  accelerator to improve the DVD  playback performance. In
addition to providing the  standard interface for CRT monitors, SiS540
also  provides  the Digital  Flat  Panel  Port  (DFP) for  a  standard
interface  between  a  personal  computer  and a  digital  flat  panel
monitor.  To  extend functionality and flexibility,  SiS also provides
the  "Video Bridge"  (SiS301) to  support the  NTSC/PAL  Video Output,
Digital  LCD Monitor  and  Secondary CRT  Monitor,  which reduces  the
external Panel  Link transmitter and TV-Out encoder  for cost effected
solution. SiS540  also adopts  Share System Memory  Architecture which
can flexibly utilize the frame buffer size up to 64MB.

The  "Super-South Bridge"  in  SiS540 integrates  all peripheral  con-
trollers/accelerators/interfaces.   SiS540  provides  a total  commun-
ication   solution  including  10/100Mb   Fast  Ethernet   for  Office
requirement.  SiS540 offers AC’97  compliant interface  that comprises
digital audio engine with 3D-hardware accelerator, on-chip sample rate
converter, and  professional wavetable  along with separate  modem DMA
controller.   SiS540 also provides  interface to  Low Pin  Count (LPC)
operating at 33 MHz clock which is  the same as PCI clock on the host,
and dual USB  host controller with four USB  ports that deliver better
connectivity and 2 x 12Mb bandwidth.

The built-in fast PCI IDE controller supports the ATA PIO/DMA, and the
Ultra DMA33/66 function that supports  the data transfer rate up to 66
MB/s. It provides  a separate data path for two  IDE channels that can
eminently improve the performance under the multi-tasking environment.

***Configurations...
***Features:...
**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...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
**W83977EF        WINBOND I/O (Multi I/O)                          <98
***Info:
GENERAL DESCRIPTION

The W83977EF  is an evolving  product from Winbond's most  popular I/O
chip W83877F --- which integrates  the disk drive adapter, serial port
(UART),  IrDA  1.0  SIR,  parallel port,  configurable  plugand-  play
registers for  the whole chip  --- plus additional  powerful features:
ACPI,  8042 keyboard controller  with PS/2  mouse support,  14 general
purpose  I/O  ports,  full  16-bit address  decoding,  OnNow  keyboard
Wake-Up, OnNow mouse Wake-Up.

The disk  drive adapter  functions of W83977EF  include a  floppy disk
drive  controller compatible  with the  industry standard  82077/ 765,
data  separator, write  pre-compensation circuit,  decode  logic, data
rate selection,  clock generator,  drive interface control  logic, and
interrupt and DMA  logic. The wide range of  functions integrated onto
the  W83977EF greatly reduces  the number  of components  required for
interfacing with floppy disk  drives. The W83977EF supports four 360K,
720K, 1.2M, 1.44M, or 2.88M disk drives and data transfer rates of 250
Kb/s, 300 Kb/s, 500 Kb/s,1 Mb/s, and 2 Mb/s.

The  W83977EF  provides  two  high-speed  serial  communication  ports
(UARTs),  one of  which supports  serial Infrared  communication. Each
UART includes  a 16-byte send/receive  FIFO, a programmable  baud rate
generator,  complete   modem  control  capability,   and  a  processor
interrupt system. Both UARTs provide legacy speed with baud rate up to
115.2k bps and  also advanced speed with baud rates  of 230k, 460k, or
921k bps which support higher speed modems.

The   W83977EF  supports   one  PC-compatible   printer   port  (SPP),
Bi-directional  Printer port  (BPP)  and also  Enhanced Parallel  Port
(EPP) and  Extended Capabilities Port (ECP). Through  the printer port
interface pins,  also available are: Extension FDD  Mode and Extension
2FDD  Mode allowing  one  or two  external  floppy disk  drives to  be
connected.

The   configuration  registers   support   mode  selection,   function
enable/disable, and  power down function  selection.  Furthermore, the
configurable  PnP  features  are  compatible  with  the  plug-and-play
feature demand  of Windows 95, which makes  system resource allocation
more efficient than ever.

W83977EF  provides   functions  that  complies   with  ACPI  (Advanced
Configuration and  Power Interface), which includes  support of legacy
and ACPI power  management through SMI or SCI  function pins. W83977EF
also  has auto  power  management to  reduce  power consumption.   The
keyboard controller is based on 8042 compatible instruction set with a
2K  Byte programmable  ROM  and  a 256-Byte  RAM  bank. Keyboard  BIOS
firmware are available with optional AMIKEY-2, Phoenix MultiKey/42, or
customer code.

The W83977EF provides  a set of flexible I/O  control functions to the
system designer through a set of General Purpose I/O ports. These GPIO
ports may  serve as  simple I/O or  may be individually  configured to
provide a predefined alternate function.

The W83977EF  also supports Power-loss  control, and makes  the system
never miss to detect any Wake-Up event provided by the chipset such as
INTEL PIIX4.

I/O  space   resource  are  flexible   to  adjust  to  meet   ISA  PnP
requirement. Moreover  W83977EF is made  to meet the  specification of
PC98's requirement in the power management: ACPI and DPM (Device Power
Management).

Another  benifit is that  W83977EF is  of the  same pin  assignment of
W83977AF,  W83977F, W83977TF,  W83977ATF. Thus  makes the  design very
flexible.

***Versions:...
***Features:...
**W83977ATF       WINBOND I/O (Multi I/O)                          <98...
**
**Disk Controller:
**W83759/A/F/AF   Advanced VL-IDE Disk Controller                  <96...
**W83769          Local Bus IDE Solution                           <94...
**
**UARTS:
**W86C250A  UART (equivalent of INS8C250A) [no datasheet]
**W86C450/P Universal Asynchronous Receiver/Transmitter         <Jul89...
**W86C451   I/O controller for IBM PC/AT/XT                     <Jul89...
**W86C452   I/O controller for IBM PC/AT                         Jul89...
**W86C456   I/O controller [no datasheet]                            ?
**W860551/P UART with FIFO and Printer Port Controller             <94...
**
**Other:...
*ZyMOS...
*General Sources:...

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