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**82371AB PCI-TO-ISA / IDE Xcelerator 82371AB (PIIX4) 02/17/97
***Notes:...
***Info:
The 82371AB PCI ISA IDE Xceierator (PIIX4) is a multi-function PCI
device implementing a PCI-to-ISA bridge function, a PCI IDE function,
a Universal serial Bus host/hub function, and an Enhanced Power
Management function. As a PCI-to-ISA bridge, PIIX4 integrates many
common, I/O functions found in ISA-based PC systems-two 82C37 DMA
Controllers, two 82C59 interrupt Controllers, an 82C54 Timer/Counter,
and a Real Time Clock. In addition to compatible transfers, each DMA
channel supports Type F transfers. PIIX4 also contains full support
tor both PC/PCI and Distributed DMA protocols implementing PCI-based
DMA. The interrupt Controller has Edge or Level sensitive programmable
inputs and fully supports the use of an external I/O Advanced
Programmable interrupt Controller (APIC) and Serial interrupts. Chip
select decoding is provided for BIOS, Real Time Clock, Keyboard
Controller, second external microcontroller, as well as two
Programmable Chip Selects. PIIX4 provides full Plug and Play
compatibility. PIIX4 can be configured as a Subtractive Decode bridge
or as a Positive Decode bridge. This allows the use of a subtractive
decode PCI-to-PCI bridge such as the Intel 380FB PCIset which
implements, a PCI/ISA docking station environment.
PIIX4 supports two IDE connectors for up to four IDE devices providing
an interface for IDE hard disks and CD ROMS. Up to four IDE devices
can be supported in Bus Master mode. PIIX4 contains support for
"Ultra DMA/33" synchronous DMA compatible devices.
PIIX4 contains a Universal Serial Bus, (USB) Host Controller that is
Universal Host Controller interface (UHCI) compatible. The Host
Controller's root hub has two programmable USB ports.
PIIX4 supports Enhanced Power Management, including full Clock
Control, Device Management for up to 14 devices, and Suspend and
Resume logic with Power On Suspend, Suspend to RAM or Suspend to Disk,
It fully supports Operating System Directed Power Management via the
Advanced Configuration and Power Interface (ACPI) specification.
PIIX4 integrates both a System Management Bus (SMBus) Host and Slave
interface for serial communication with other devices.
***Versions:...
***Features:...
**82374/82375 PCI-EISA Bridge (82374EB/82375EB, 374SB/375SB) c:Mar93...
**82378 System I/O (SIO) (82378IB and 82378ZB) c:Mar93...
**82379AB System I/O-APIC (SIO.A) <Dec94...
**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384 Clock Generator and Reset Interface c86...
**82385 32-bit Cache Controller for 80386 09/29/87...
**82385SX 32-bit Cache Controller for 80386SX 01/25/89...
**82395DX High Performance Smart Cache 06/18/90...
**82395SX Smart Cache 12/17/90...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**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...
**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...
*ZyMOS...
*General Sources:...
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