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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)...
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**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
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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...
*ZyMOS...
*General Sources:...
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