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1-3 CHIPSET SYSTEM BLOCK DIAGRAM
3D Graphics
Controller
PCLK
BIOS ROM
ATA 33/66/100
USB Ports 0 - 3
AC97 Audio Codec
RTC Crystal
Diagram of Pro133T System Block Using the VT82C686B South Bridge
Socket-370 or
Slot-1 Host CPU
SMIACT#
VT82C
GCLK
694T
AGP Bus
Pro133T
North Bridge
PCKRUN#
552 BGA
PCI Bus
VT82C
686B
AC97 Link
ISA Bus
Super South
South Bridge
352 BGA
13
Chapter 1 Introduction
HCLK
SMI#, STPCLK#, SLP#
CKE#
Memory Bus
MCLK
HCLK
PCLK
SUSCLK,
SUSST1#
CPUSTP#
PCISTP#
SMBus
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
SDRAM
Clock
Buffer
Clock
Generator
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