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**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94
***Notes:
Date source: 1995_Intel_Pentium_Processors_and_Related_Components.pdf
Information taken from:
1995_Intel_Pentium_Processors_and_Related_Components.pdf*
8249x Cache controllers.pdf**
>* Datasheet dated Nov'94
>** Datasheet undated, whole document dated '95
The info and features section have been solely sourced from the first
source. The second source provides far more detail. Additional
information in the configurations section and below have been sourced
from the second.
"Although the 82497 Cache Controller is part of the Pentium processor
(735\90, 815\100, 1000\120, 1110\133) CPU-Cache Chip Set and the 82496
Cache Controller is part of the Pentium Processor (510\60, 567\66)
Chip Set, the two parts are functionally identical except for the
differences noted in this section." - p491
Aside from some minor differences in pin configuration, the main
difference is the direct support for 3.3V processors. This chipset is
still a 5V part. The cache operates at bus speed, max 66MHz.
This chip was used on the Pentium 90MHz CPU complexes of Intel's
Xpress platform. Specifically the BXCPUPENT90 (Single 90MHz, 16
82492s). Also found on IBM 9595/Server 500 Pentium 90MHz complexes.
***Info:...
***Configurations:...
***Features:...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
**Later chipsets (basic spec):
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**5595 Pentium PCI System I/O <12/24/97
***Notes:...
***Info:...
***Versions:...
***Features:
o Integrated PCI-to-ISA Bridge
− Translate s PCI Bus Cycles into ISA Bus Cycles.
− Translate s ISA Master or DMA Cycles into PCI Bus Cycles.
− Provide s a Dword Post Buffer for PCI to ISA Memory cycles.
− Two 32 bit Prefetch/Post Buffers Enhance the DMA and ISA
Master Performance.
− Fully Compliant to PCI 2.1.
o Supports both Desktop and Mobile Advanced Power Management Logic
− Meets ACPI 1.0 Requirements.
− Supports Both ACPI and Legacy PMU.
− Supports Suspend to RAM.
− Supports Suspend to Hard Disk.
− Optionally Tri−state ISA bus in low power state.
− Supports Battery Management and LB/LLB/AC Indicator.
− Supports CPU's SMM Mode Interface.
− Supports CPU Stop Clock.
− Supports Power Button of ACPI.
− Supports three system timers and SMI# watchdog timer.
− Supports Automatic Power Control.
− Supports Modem Ring−in, RTC Alarm Wake up.
− Supports Thermal Detection.
− Supports GPIOs, and GPOs for External Devices Control.
− Supports Programmable Chip Select.
− Supports PCI Bus Power Management Interface Spec. 1.0
− Supports Pentium II Sleep State.
o Enhanced DMA Functions
− 8-, 16- bit DMA Data Transfer.
− Two 8237A Compatible DMA Controllers with Seven Independent
Programmable Channels.
− Provide the Readability of the two 8237 Associated Registers.
− Support Distributed DMA.
− Support PC/PCI DMA.
− Per DMA channel programmable in legacy, DDMA or PC/PCI DMA mode
operation.
o Integrated Two 8259A Interrupt Controllers
− 14 Independently Programmable Channels for Level- or Edge-
triggered Interrupts.
− Provide the Readability of the two 8259A Associated Registers.
− Support Serial IRQ.
− Support the Reroutability for the PCI Interrupts.
o Three Programmable 16-bit Counters compatible with 8254
− System Timer Interrupt.
− Generate Refresh Request.
− Speaker Tone Output.
− Provide the Readability of the 8254 Associated Registers.
o Integrated Keyboard Controller
− Hardwired Logic Provides Instant Response.
− Supports PS/2 Mouse Interface.
− Supports Keyboard Password Security or Hot Key Power On
Function.
− Supports Hot Key "Sleep" Function.
− Programmable Enable and Disable for Keyboard Controller and
PS/2 Mouse.
o Integrated Real Time Clock(RTC) with 256B CMOS SRAM
− Supports ACPI Day of Month Alarm/Month Alarm.
− Supports various Power Up events, such as Button Up, Alarm Up,
Ring Up, GPIO5/PME0# Up, GPIO10/ PME1# Up, Password Security Up,
and Hotkey Up.
− Supports various Power Down Events, like Software Power-down,
Button Power-down, and ACPI S3 Power-down.
− Supports Power Supply ’98.
− Provides RTC year 2000 solution.
o Integrated Frequency Ratio Control Logic for Pentium II CPU
o Universal Serial Bus Host Controller
− Open HCI Host Controller with Root Hub.
− Two USB Ports.
− Supports Legacy Devices.
− Supports Over Current Detection.
o Integrated Hardware Monitor Logic
− Up to 5 Positive Voltage Monitoring Inputs.
− Two Fan Speed Monitoring Inputs.
− One Temperature Sensings.
− Supports thermister- or diode- temperature sensing for Pentium
II CPU.
− Threshold Comparison of all Monitored Values.
o Supports I2C Serial Bus/ SMBUS
o Supports 2MB Flash ROM Interface
o 208 pins PQFP Package
o 5V CMOS Technology
**950 LPC I/O <07/16/99...
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