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**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94
***Notes:...
***Info:...
***Configurations:...
***Features:...
**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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**IBM AT: MC146818 Real Time Clock <84
***Info:...
***Versions:...
***Features:
o Low-Power, High-Speed, High-Density CMOS
o Internal Time Base and Oscillator
o Counts Seconds, Minutes, and Hours of the Day
o Counts Days of the Week, Date, Month, and Year
o 3 V to 6 V Operation
o Time Base Input Options: 4.194304 MHz, 1.048576 MHz, or 32,768 kHz
o Time Base Oscillator for Parallel Resonant Crystals
o 40 to 200 uW Typical Operating Power at Low Frequency Time Base
o 4.0 to 20 mW Typical Operating Power at High Frequency Time Base
o Binary or BCD Representation of Time, Calendar, and Alarm
o 12- or 24-Hour Clock with AM and PM in 12-Hour Mode
o Daylight Savings Time Option
o Automatic End of Month Recognition
o Automatic Leap Year Compensation
o Microprocessor Bus Compatible [this means absolutely nothing]
o MOTEL Circuit for Bus Univerality
o Multiplexed Bus for Pin Efficiency
o Interfaced with Software as 64 RAM Locations
o 14 Bytes of Clock and Control Registers
o 50 Bytes of General Purpose RAM
o Status Bit Indicates Data Integrity
o Bus Compatible Interrupt Signals (IRQ)
o Three Interrupts are Separately Software Maskable and Testable
Time-of-Day Alarm, Once-per-Second to Once-per-Day
Periodic Rates from 30.5 us to 500 ms
End-of-Clock Update Cycle
o Programmable Square-Wave Output Signal
o Clock Output May Be Used as Microprocessor Clock Input
At Time Base Frequency /1 or /4
o 24-Pin Dual-In-Line Package
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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*Symphony...
*TI (Texas Instruments)...
*UMC...
*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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