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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...
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*HMC (Hulon Microelectronics)...
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*Motorola...
*OPTi...
**82C802G/GP System/Power Management Controller (cached) c:93
***Notes:...
***Info:
The 82C802G/GP provides a highly integrated solution for fully
compatible, high performance PC/AT platforms. This chipset will
support 486SX/DX/DX2/DX4 and P24T microprocessors in the most cost
effective and power efficient designs available today. For power
users this chipset offers optimum performance for systems running up
to 50MHz.
Based fundamentally on OPTi’s proven 82C801 and 82C802 design
architectures, the 82C802G/GP adds additional memory configurations
and extensive power management control for the processor and other
motherboard components.
The 82C802G/GP 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 Plat Pack) package for low cost.
Power Management Block
Figure 2-1 [see datasheet] exemplifies the flexibility of the
82C802G/GP/82C602 GREEN strategy. System designs can easily
accommodate both SLe and non-SLe CPUs. If an Intel non-SLe CPU is
used. SMI#, SMIACT#, and FLUSH# are no connects. One design can easily
accommodate both types of processors with minimal changes for
upgrades.
***Configurations:...
***Features:...
**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...
**W83877TF/TG/TD WINBOND I/O (Multi I/O) c97
***Info:
GENERAL DESCRIPTION
W83877TF/TG is an enhanced version 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 / legacy power management, serial IRQ, and IRQ sharing.
The disk drive adapter functions of W83877TF/TG include a floppy disk
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, interrupt
and DMA logic. The wide range of functions integrated into W83877TF/TG
greatly reduces the number of components required for interfacing with
floppy disk drives. W83877TF/TG 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.
W83877TF/TG 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. One of the UARTs support infrared (IR) IrDA1.0. Both
UARTs provide legacy speed with baud rate up to 115.2K and provide
advanced speed with baud rate up to 230k, 460k, and 921k bps which
support higher speed Modems.
W83877TF/TG 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. This function is especially valuable for notebook computer
applications.
Winbond W83877TF/TG 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. One
24-bits power management timer is implemented with the carry notify
interrupt. W83877TF/TG also has auto power management mode to reduce
the power consumption.
The serial IRQ for PCI architecture is supported, ISA IRQs
(IRQ1~IRQ15) can be cascaded into one IRQSER pin. W83877TF/TG also
features ISA bus IRQ sharing and allows two or more devices to share
the same IRQ pin.
W83877TF/TG is made to fully comply with Microsoft PC97 Hardware
Design Guide. IRQs, DMAs, and I/O space resources are flexible to
adjust to meet ISA PnP requirement. Moreover W83877TF/TG is made to
meet the specification of PC97's requirement in the power management:
ACPI and DPM (Device Power Management).
The configuration registers support mode selection, function
enable/disable, and power down function selection. Furthermore, the
configurable PnP registers are compatible with the Plug-and-Play
feature demand of Windows 95 , which makes system resource allocation
more efficient than ever.
Another benefit of W83877TF/TG is that it is pin-to-pin compatible to
W83877F, and all of the 100-pin Winbond I/O IC family. Thus makes the
design of applications very convenient and flexible.
***Versions:...
***Features:...
**W83977F/G/AF/AG WINBOND I/O (Multi I/O) c97...
**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...
*General Sources:...
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