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**82489DX       Advanced Programmable Interrupt Controller    10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**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...
**
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***815         (Solano)        06/19/00...
***815e        (Solano-2)      06/19/00...
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***815ep       (Solano-3)      c:Nov'00...
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***845MZ       (Brookdale-M)   03/04/02...
***845E        (Brookdale-E)   05/20/02...
***845G        (Brookdale-G)   05/20/02...
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***854         (?)             04/11/05...
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***855PM       (Odem)          03/12/03...
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***865PE       (Springdale-PE) 05/21/03...
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**W83977TF        WINBOND I/O (Multi I/O)                          c97
***Info:
GENERAL DESCRIPTION

The W83977TF  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  plug-andplay
registers for  the whole chip  --- plus additional  powerful features:
ACPI,  8042 keyboard controller  with PS/2  mouse support,  23 general
purpose  I/O  ports,  full  16-bit address  decoding,  OnNow  keyboard
wake-up, OnNow mouse wake-up.

The disk  drive adapter  functions of W83977TF  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 into
the  W83977TF greatly reduces  the number  of components  required for
interfacing with floppy disk  drives. The W83977TF 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  W83977TF  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   W83977TF  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 95TM, which makes system resource allocation
more efficient than ever.

W83977TF   provides  functions   that  comply   with   ACPI  (Advanced
Configuration and  Power Interface), which includes  support of legacy
and ACPI power management through  SMI or SCI function pins.  W83977TF
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 is available with  optional AMIKEY-2, Phoenix MultiKey/42, or
customer code.

The W83977TF 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.

W83977TF is made  to fully comply with Microsoft  PC97 Hardware Design
Guide. IRQs,  DMAs, and I/O space  resource are flexible  to adjust to
meet  ISA PnP  requirement.  Moreover  W83977TF is  made  to meet  the
specification of PC97's requirement  in the power management: ACPI and
DPM (Device Power Management).

Another  benifit is  that  W83977TF  has the  same  pin assignment  as
W83977AF, W83977F, W83977ATF.  This makes the design very flexible.
***Versions:...
***Features:
General
o  Plug & Play 1.0A compatible
o  Support 13 IRQs, 4 DMA channels, full 16-bit address decoding
o  Capable of ISA Bus IRQ Sharing
o  Compliant with Microsoft PC97 Hardware Design Guide
o  Support DPM (Device Power Management), ACPI
o  Report ACPI status interrupt by SCI signal issued from any of the 
   13 IQRs pins or GPIO xx
o  Programmable configuration settings
o  Single 24/48 Mhz clock input

FDC
o  Compatible with IBM PC AT disk drive systems
o  Variable write pre-compensation with track selectable capability
o  Support vertical recording format
o  DMA enable logic
o  16-byte data FIFOs
o  Support floppy disk drives and tape drives
o  Detects all overrun and underrun conditions
o  Built-in address mark detection circuit to simplify the read 
   electronics
o  FDD anti-virus functions with software write protect and FDD 
   write enable signal (write data signal was forced to be inactive)
o  Support up to four 3.5-inch or 5.25-inch floppy disk drives
o  Completely compatible with industry standard 82077
o  360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps 
   data transfer rate
o  Support 3-mode FDD, and its Win95 driver

UART
o  Two high-speed 16550 compatible UARTs with 16-byte send/receive 
   FIFOs
o  MIDI compatible
o  Fully programmable serial-interface characteristics:
   - 5, 6, 7 or 8-bit characters
   - Even, odd or no parity bit generation/detection
   - 1, 1.5 or 2 stop bits generation
o  Internal diagnostic capabilities:
   - Loop-back controls for communications link fault isolation
   - Break, parity, overrun, framing error simulation
o  Programmable baud generator allows division of 1.8461 Mhz and 24 
   Mhz by 1 to (2^16-1)
o  Maximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps 
   for 24 Mhz

Infrared
o  Support IrDA version 1.0 SIR protocol with maximum baud rate up to 
   115.2K bps
o  Support SHARP ASK-IR protocol with maximum baud rate up to 57,600 
   bps
o  Support S/W driver for Windows95 and Windows98 (Memphis)

Parallel Port
o  Compatible with IBM parallel port
o  Support PS/2 compatible bi-directional parallel port
o  Support Enhanced Parallel Port (EPP) - Compatible with IEEE 1284 
   specification
o  Support Extended Capabilities Port (ECP) - Compatible with IEEE 
   1284 specification
o  Extension FDD mode supports disk drive B; and Extension 2FDD mode 
   supports disk drives A and B through parallel port
o  Enhanced printer port back-drive current protection

Keyboard Controller
o  8042 based with optional F/W from AMIKKEY-2, Phoenix MultiKey/42
   or customer code with 2K bytes of programmable ROM, and 256 bytes 
   of RAM
o  Asynchronous Access to Two Data Registers and One status Register
o  Software compatibility with the 8042 and PC87911 microcontrollers
o  Support PS/2 mouse
o  Support port 92
o  Support both interrupt and polling modes
o  Fast Gate A20 and Hardware Keyboard Reset
o  8 Bit Timer/ Counter
o  Support binary and BCD arithmetic
o  6MHz, 8 MHz, 12 MHz, or 16 MHz operating frequency

General Purpose I/O Ports
o  23 programmable general purpose I/O ports; 1 dedicate, 22 optional
o  General purpose I/O ports can serve as simple I/O ports, interrupt 
   steering inputs, watching dog timer output, power LED output, 
   infrared I/O pins, general purpose address decoder, KBC control
   I/O pins

OnNow Funtions
o  Keyboard wake-up by programmable keys (patent pending)
o  Mouse wake-up by programmable buttons (patent pending)

Package
o  128-pin PQFP


**W83977EF        WINBOND I/O (Multi I/O)                          <98...
**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...
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