FIC A360 Clock Frequency Generator, Cache Memory, System Memory, Hardware Functional Overview

Hardware Functional Overview

•Enhanced integrated real time clock (RTC) with date alarm, month alarm, and century field

•Thermal alarm on either external or any combination of three internal temperature sensing circuits

•Hot docking support

•I/O pad leakage control

Plug and Play Controller

•PCI interrupts steerable to any interrupt channel

•Steerable interrupts for integrated peripheral controllers: USB, floppy, serial, parallel, audio, soundblaster, MIDI

•Steerable DMA channels for integrated floppy, parallel, and soundblaster pro controllers

•One additional steerable interrupt channel for on-board plug and play devices

•Microsoft Windows 98, Windows NT, Windows 95 and plug and play BIOS compliant

•Integrated I/O APIC (Advanced Peripheral Interrupt Controller) (CG Silicon)

•Built-in NAND-tree pin scan test capability 35um, 3.3V, low power CMOS process

•Single chip 27x27 mm, 352 pin BGA

4.6Clock Frequency Generator

The notebook utilizes the IMI 9896I chip to supply the system clock needed to run the computer. The following are the available clock frequencies:

System clock:

Clock generator IMI 9806I support:

-66/100 MHz for Pentium III Mobile CPU

-30/33 MHz for PCI device bus clock use

-48 MHz for PIIX4M

-14.318 MHz for PIIX4M refresh use

•14.318 MHz XTAL for Clock Generator use

•32.768 KHz XTAL for RTC real time clock

•8.0 MHz XTAL for K/B controller use

•14.318 MHz OSC for sound blaster use

4.7Cache Memory

The primary (L1) and secondary (L2) level cache are integrated on the CPU. By incorporating the cache on-die (meaning it is combined with the CPU into one component), Intel eliminates the need for separate components. The 256KB on-die L2 cache provides three (3X) times faster processor access, resulting in significant improvements in performance. Likewise, an integrated cache means a reduction of connections resulting in increased reliability.

4.8System Memory

The memory subsystem, implemented on the motherboard, includes System and Video memory. The VIA Twister System Controller chip provides primary control for the system memory.

FIC A360 Service Manual 4-9