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75KAV/75KAV-X
1-15 CHIPSET DIAGRAM---
• The KT-133A / VT8363A and 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.
3D Graphics
Controller
PCLK
AC97 Audio Codec
KT133A System Block Diagram Using the VT82C686B South Bridge
12
75KAV/75KAV-X
Host CPU
Address
Out
KT133A
GCLK
VT8363A
AGP Bus
GCKRUN#
North Bridge
PCKRUN#
PCI Bus
BIOS ROM
ATA 33/66/100
VT82C
USB Ports 0 - 3
686B
AC97 Link
ISA Bus
South Bridge
RTC Crystal
SYSCLK, SYSCLK#
Athlon
INTR, NMI, SMI#, STPCLK#,
IGNNE#, FERR#, A20M#,
PWROK, INIT#, RESET#
Data
In
CKE
Memory Bus
552 BGA
SUSCLK,
SUSST1#
Power Plane & Peripheral Control
GPIO and ACPI Events
Hardware Monitoring Inputs
Keyboard / PS2 Mouse
Serial Ports 1 and 2
Parallel Port
Floppy Drive Interface
352 BGA
MIDI / Game Ports
SDRAM
MCLK
Clock
Buffer
HCLK
PCLK
CPUSTP#
Clock
PCISTP#
Generator
SMBus
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