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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...
**800 series...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
*Motorola...
*OPTi...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96
***Notes:...
***Info:...
***Configurations:...
***Features:
System
o 100% PC/AT compatible
o Supports 3.3V Intel Pentium 75/90/100/120 processors at bus
frequencies up to 66MHz
o Supports Cyrix 6x86 processor
DRAM
o Full 64-bit FPM/EDO DRAM controller
- Supports 2-2-2 EDO pipeline at 66MHz bus speed
- Supports 5V or 3.3V DRAM with-out buffers
- Supports up to 512MB
- Controls up to 6 banks
- Post write buffer
o Selectable current drive for DRAM bus
Cache
o L1 Cache supports write-through and write-back modes
o Power managed L2 Cache
- 64KB-2MB cache
- Write-back or write-through modes
- 2-1-1-1 synchronous cache cycles
- 3-1-1-1 pipelined synchronous cache cycles
- Combined tag/dirty SRAM option
ISA/VL/PCI Bus
o Integrated PCI bus with operation up to 33MHz; supports up to
three masters
o CLKRUN# support for PCI
o Distributed DMA support (software-based)
o 100% AT-compatible ISA bus; 3.3V or 5V operation, also supports
ISA bus masters
o VL bus support (slave only)
o Integrated Local Bus IDE supports four drives, which can be bus
masters, modes 4 and 5 supported
Power Management
o Advanced Power Management Unit
o Full CPU System Management Mode (SMM) support
o Full CPU power control through "clock throttling"
o Full system clock control, even CPU clock can be stopped during
APM doze mode
o Both hardware and software controlled power management
o Full peripheral power control
o 13 flexible peripheral timers
o Sixteen power control pins
o I/O trapping captures address and data
o Distributed DMA support (software-based)
o Full peripheral activity tracking
o Automatic peripheral power-up/power-down features
o Full suspend current leakage control
o 36 Power Management Interrupt (PMI) sources
o Eight external power management interrupt sources
o Supports SMBASE re-programmability that allows the cache to be
maintained during system management mode, avoiding cache fills
after returning from SMM
o Proprietary automatic internal pull-up/pull-down resistors
activated only when needed to reduce power consumption
Thermal Management
o Advanced Thermal Management Unit
o Internal mechanism tracks CPU activity and initiates cool down
mode before CPU temperature reaches a damaging level
o External sensor option
Packaging
o 82C556M Data Buffer
- 176 pin TQFP (0.5mm pin spacing)
o 82C557M System Controller
- 208 pin TQFP (0.5mm pin spacing)
o 82C558E Peripheral Controller
- 208 pin TQFP (0.5mm pin spacing)
82C602A RTC/Buffer Companion Chip
o Integrated Real-Time Clock
o Based on Benchmark Bq3285
o 256 bytes battery-backed memory
o Integrates multiplexing/demultiplexing logic, latches, and
buffers
o Eliminates most/all TTL in typical synchronous cache system
o 100 pin TQFP package (0.5mm pin spacing)
o Also available in 100 pin PQFP
**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
***Notes:...
***Info:
Overview
The 82C895 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 82C895 adds additional memory configurations and
extensive power management control for the processor and other
motherboard components.
The 820895 supports the latest 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-compatible Integrated Peripherals Controller (IPC). all in a
single 208-pin PQFP (Plastic Quad Flat Pack) package for low cost.
2.1 Power Management
This block diagram [see datasheet] exemplifies the flexibility of the
82C895/82C602 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 accomm-
odate both types of processors with minimal changes for upgrades.
***Configurations:...
***Features:...
**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...
**5571 (Trinity) Pentium PCI/ISA Chipset (75MHz) <12/09/96
***Info:...
***Configurations:...
***Features:...
**5581/5582 (Jessie) Pentium PCI/ISA Chipset (75MHz) <04/15/97...
**5591/5592/5595 (David) Pentium PCI A.G.P. Chipset <01/09/98...
**5596/5513 (Genesis) Pentium PCI Chipset <03/26/96...
**5597/5598 (Jedi) Pentium PCI/ISA Chipset <04/15/97...
**530/5595 (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540 (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x SoC (System-on-chip) <03/14/02...
**
**Support chips:
**85C206 Integrated Peripheral Controller [no datasheet] ?...
**5595 Pentium PCI System I/O <12/24/97...
**950 LPC I/O <07/16/99...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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