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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...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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*OPTi...
**82C898 System/Power Management Controller (non-cache)c:Nov94
***Notes:...
***Info:
Overview
The 82C898 provides a highly integrated solution for fully compatible,
high performance PC/AT platforms. The 82C898 supports 486SX/DX/DX2/DX4
and P24T microprocessors in the most cost effective and power
efficient designs available today. For high-end system applications,
this device offers optimum performance for systems running up to
50MHz.
Based fundamentally on OPTi’s proven 82C801 and 82C802 design
architectures, the 82C898 adds additional memory configurations and
extensive power management control for the processor and other
motherboard components.
The 82C898 supports the latest in write-back processor designs from
Intel, AMD, and Cyrix, as well as supporting the AT bus and VESA local
bus for compatibility and performance. It also includes an 82C206
Integrated Peripherals Controller (IPC), all in a single 208-pin PQFP
(Plastic Quad Flat Pack) for low cost.
Power Management
Figure 2-1 [see datasheet] exemplifies the flexibility of an
82C898/82C602-based designs GREEN strategy. System designs can easily
accommodate both SLe and non-SLe CPUs. If an Intel non-SLe CPU is
used, SMI#, SMIAOT#, and FLUSH# are no connects. One design can easily
accommodate both types of processors with minimal changes for
upgrades.
***Configurations:...
***Features:...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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*Unresearched:...
*VIA...
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*Western Digital...
*Winbond...
**W83977F/G/AF/AG WINBOND I/O (Multi I/O) c97
***Info:
GENERAL DESCRIPTION
This data sheet covers two products: W83977F/G, and W83977AF/AG whose
pin assignment, and most of the functions are the same. W83977AF/AG is
an advanced version of W83977F/G featuring the FIR function.
W83977F/G, W83977AF/AG are evolving products 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 in one chip --- plus additional powerful
features: ACPI, 8042 keyboard controller with PS/2 mouse support, Real
Time Clock, 14 general purpose I/O ports, full 16-bit address
decoding, TV remote IR (Consumer IR, supporting NEC, RC-5, extended
RC-5, and RECS-80 protocols). In addition, W83977AF/AG provides the
functions of IrDA 1.1 (MIR for 1.152M bps or FIR for 4M bps).
The disk drive adapter functions of W83977F/G, W83977AF/AG 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/ DMA logic. The wide range of functions
integrated onto the W83977F/G, W83977AF/AG greatly reduces the number
of components required for interfacing with floppy disk drives. The
W83977F/G, W83977AF/AG supports up to 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 W83977F/G, W83977AF/AG provide 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
115.2k and provide advanced speed with baud rate 230k, 460k, and 921k
bps which support higher speed modems. W83977AF/AG alone provides
independent 3rd UART (32-byte FIFO) dedicated for IR function.
The W83977F/G, W83977AF/AG 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.
W83977F/G, W83977AF/AG 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. W83977F/G, W83977AF/AG 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 W83977F/G, W83977AF/AG 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 pre-defined alternate function.
W83977F/G, W83977AF/AG 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. Full 16-bit address decoding is
also provided. Moreover W83977F/G, W83977AF/AG is made to meet the
specification of PC97‘s requirement in the power management: ACPI and
DPM (Device Power Management).
***Versions:...
***Features:...
**W83977TF WINBOND I/O (Multi I/O) c97...
**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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