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**82495DX/490DX DX CPU-Cache Chip Set <Sep91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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
***Notes:...
***Info:
The 82498 Cache Controller and multiple 82493 Cache SRAMs combine with
the Pentium processor (735/90, 815/100) and future Pentium Processors
to form a CPU Cache chip set designed for high performance servers and
function-rich desktops. The high-speed interconnect between the CPU
and cache components has been optimized to provide zero-wait state
operation. This CPU Cache chip set is fully compatible with existing
software, and has new data integrity features for mission critical
applications.
The 82498 Cache Controller implements the MESI write-back protocol for
full multiprocessing support. Dual ported buffers and registers allow
the 82498 to concurrently handle CPU bus, memory bus, and internal
cache operation for maximum performance.
The 82493 is a customized high-performance SRAM that supports 64-, and
128-bit wide memory bus widths, 32-, and 64-byte line sizes, and
optional sectoring. The data path between the CPU bus and memory bus
is separated by the 82493, allowing the CPU bus to handshake
synchronously, asynchronously, or with a strobed protocol, and
allowing concurrent CPU bus and memory bus operations.
***Configurations:...
***Features:...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
**800 series...
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*Unresearched:...
*VIA...
*VLSI...
**VL82C312 SCAMP Power Management Unit (PMU) ?
***Info;...
***Versions:...
***Features:
o Provides system activity monitoring, peripheral control, power
supply control, mode timers, and general purpose I/O for
laptop/notebook power management
o Five operation modes:
- On Mode
- Doze Mode
- Sleep Mode
- Suspend Mode
- Off Mode
o Independent programmable timers for power saving modes
o independent programmable timers for LCD and backlight control
o Ten individual power control outputs
- Three for LCD power
- Seven general purpose for peripherals
o Four "low battery" warning monitors: two standard and two
optional
o Multiple power-on sources from Suspend/Off Mode:
- Pushbutton
- RTC alarm
- Modem ring
o AC power monitoring to disable PMU function
o Refresh support in suspend Mode
o Leakage control of outputs during Suspend Mode
o wide range of LCD panel power-up/down sequencing
o Ten general purpose I/O ports; eight with additional i/O
features:
- one programmable blinking I/O
- Two optional low battery inputs
- three inputs AND/OR selectable I/O with one common GPIO output
o Watchdog timer to turn off system power if low battery NMI is
not serviced
o Programmable NMI generation on:
- PMU power mode
- Low battery warning
- External input
- LCD panel timer
- Reschedule Suspend Mode NMI by BIOS
o Controls SCAMP's SLEEP pin
o RTC alarm IRQ output pin for SCAMP
o Additional logic included to minimize system board component
count
o Provides chip selects for:
- IDE interface
- Floppy disk controller
- VL16C452 serial/parallel I/O chip
o Provides multiplexed address/data bus for VGA controller
o Chip ID and revision register
o 144-pin MQFP low-power CMOS IC
**VL82C315A SCAMP II, Low-Power Notebook Chipset ?...
**VL82C322A SCAMP II, Power Management Unit (PMU) ?...
**VL82C316 SCAMP II, PC/AT-Compatible System Controller ?...
**VL82C323 SCAMP II, 5 Volt Power Management Unit (PMU) ?...
**VL82C380 Single chip 386DX PC/AT Controller +on-chip cache ?...
**VL82C325 VL82C386SX System Cache controller ?...
**VL82C335 VL82C386DX System Cache ctrl. [no d.sheet] ?...
**VL82C315A/322A/3216 Kodiak 32-Bit Low-Voltage Chip Set ?...
**VL82C420/144/146 SCAMP IV [no datasheet, some info] c93...
**VL82C480 System/Cache/ISA bus Controller ?...
**VL82C481 System/Cache/ISA bus Controller c92...
**VL82C486 Single-Chip 486, SC486, Controller ?...
**VL82C425 486 Cache controller ?...
**???????? Cheetah 486, PCI [no datasheet] ?...
**VL82C3216 Bus Expanding Controller Cache with write buffer ?...
**VL82C521/522 Lynx/M ?...
**VL82C530 Eagle Ð c95...
**VL82C541/543 Lynx c95...
**VL82C591/593 SuperCore 590 c94...
**VL82C594/596/597 Wildcat c95...
**I/O Chips:
**VL82C106 Combination I/O chip ?...
**VL82C107 SCAMP Combination I/O chip ?...
**VL82C108 TOPCAT Combination I/O chip ?...
**VL82C110 Combination I/O chip ?...
**VL82C113 SCAMP Combination I/O chip ?...
**VL82C114 Combination I/O chip ?...
**Video: ...
**Disk:...
**Modems:...
**Other:...
**Not sure if they actually exist...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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