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1-3 CHIPSET DIAGRAM---
• The KLE-133 / VT82C686B chipset is a high performance, cost-effective
and energy efficient system controller for the implementation of AGP / PCI
/ ISA desktop personal computer system based on 64-bit Socket-A (AMD
Athlon) processors.
Monitor
PCLK
BIOS ROM
AC97 Audio Codec
Diagram of KLE133 System Block with VT82C686B South Bridge
75LIV
Host CPU
Address
Out
KLE133
VT8361
North Bridge
PCKRUN#
552 BGA
PCI Bus
ATA 33/66/100
VT82C
USB Ports 0 - 3
686B
AC97 Link
ISA
South Bridge
352 BGA
RTC Crystal
Chapter 1 Introduction
SYSCLK, SYSCLK#
Athlon
INTR, NMI, SMI#, STPCLK#,
IGNNE#, FERR#, A20M#,
PWROK, INIT#, RESET#
Data
In
CKE
Memory Bus
MCLK
HCLK
PCLK
SUSCLK,
SUSST1#
CPUSTP#
PCISTP#
Power Plane & Peripheral Control
GPIO and ACPI Events
Hardware Monitoring Inputs
Keyboard / PS2 Mouse
Serial Ports 1 and 2
Parallel Port
Floppy Drive Interface
MIDI / Game Ports
13
SDRAM
Clock
Buffer
Clock
Generator
SMBus
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