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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...
**82C496/7 DXBB PC/AT Chipset (Cached) <01/16/92
***Info:
The OPTi 82C497 is a Direct Mapped Write Back cache controller with
one level write buffer that is an optional part of the DXBB (Building
Block) Chip set. The DXBB also contains the 82C496 and the 82C206,
which form the heart of the system. The 82C497 is added to the DXBB
chip set for cache based systems.
The OPTi 82C496 offers an upgradable CPU module base-board solution
for the 80386 or the 80486 PC/AT system. By swapping the CPU module,
the vendor can configure the 82C496 driven base-board into various
32-bit AT systems - 386 or 486 CPU, with cache or without cache and
rated at 16MHz- 50MHz.
For the Non-Cache systems, the CPU interfaces directly with the 82C496
and the local devices, like the local VGA controller or the local hard
disk adaptor.
For cache based systems the 82C497 (the cache controller) sits between
the CPU and the 82C496 and the local devices. All the high frequency
signals are isolated by the 82C497. This allows the base-board to run
at a fixed speed (25 or 33MHz) - while the CPU and the Cache can run
synchronously at any determined rated speed. This provides a reliable
upgrade method for the CPU modules.
***Configurations:...
***Features:...
**82C498 DXWB PC/AT chipset [no datasheet] ?...
**82C499 DXSC DX System Controller c:93...
**82C546/547 Python PTM3V c:94...
**82C556/7/8 Viper [no datasheet] ?...
**82C556/7/8N Viper-N Viper Notebook Chipset <05/25/95...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96...
**82C566/7/8 Viper-Max Chipset Scalable MultiMedia PC Solution ?...
**82C571/572 486/Pentium c:93...
**82C576/7/8 Viper Xpress [no datasheet] ?...
**82C576/8/9 Viper XPress+ [no datasheet, some info] <01/16/97...
**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93...
**82C650/1/2 Discovery (Pentium Pro) [no datasheet] ?...
**82C681/2/6/7 386/486WB EISA c:92...
**82C683 386/486AWB EISA [no datasheet] ?...
**82C693/6/7 Pentium uP Write Back Cache EISA c:93...
**82C700 FireStar c:97...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
**W83977ATF WINBOND I/O (Multi I/O) <98
***Info:
GENERAL DESCRIPTION
The W83977ATF 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-and-play
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, and OnNow CIR wake-up. In addition, the
W83977ATF provides IR functions: IrDA 1.1 (MIR for 1.152M bps or FIR
for 4M bps) and TV remote IR (Consumer IR, supporting NEC, RC-5,
extended RC-5, and RECS-80 protocols).
The disk drive adapter functions of W83977ATF 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 W83977ATF greatly reduces the number of components required for
interfacing with floppy disk drives. The W83977ATF 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 W83977ATF 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 W83977ATF provides
independent 3rd UART(32-byte FIFO) dedicated for the IR function.
The W83977ATF 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.
The W83977ATF 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. The
W83977ATF 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 W83977ATF 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 W83977ATF 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, W83977ATF is made to
meet the specification of PC97's requirement in the power management:
ACPI and DPM (Device Power Management).
Another benifit is that W83977ATF has the same pin assignment as
W83977AF, W83977F, W83977TF. This makes the design very flexible.
***Versions:...
***Features:...
**
**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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