Product specifications

Design Guide - VT82C694X Apollo Pro133 with VT82C686A
Preliminary Revision 0.5, November 19, 1999 5 Introduction
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1.3 System Design Recommendations
The VT82C694X Apollo Pro133A north bridge and VT82C686A south bridge form one of VIA's most optimized chipset
combinations for single Slot-1or Socket-370 based PC systems. On an ATX form factor, for example, the optimized system
specification for such a combination is listed below:
• Single Slot-1 or Socket-370 CPU (66 / 100 / 133MHz)
• Apollo Pro133A single chip clock synthesizer
• Apollo Pro133A North Bridge (Host/PCI) Controller
• VT82C686A South Bridge (PCI/ISA) Controller
• Four DIMM Slots (maximum 2 GB and 133MHz memory frequency)
• One AGP Slot (66MHz)
• Two PCI Slots (33MHz)
• One ISA Slots (8/16MHz)
• One AMR Slot (24.576MHz)
• One 2MB Flash ROM for system BIOS
• One AC’ 97 Codec Chip (VT1611) to cooperate with an AC’ 97 Link Controller
• Four Universal Serial Bus Ports
• PS2 Keyboard/Mouse Support
• Two Enhanced IDE Interfaces supporting both ATA-33 and ATA-66
• One Floppy Drive Interface
• One Infrared Interface
• Various Hardware Monitoring functions supporting 5 positive voltages, 3 temperatures, and 2 fan-speed inputs
• One Parallel Port and Two Serial Ports
• Three Audio Jacks including Audio In, Audio Out and Mic In
• One MIDI Port
• One Game Port
For the rest of this document, the specification above will be used as a reference example for component placement and PCB
layout.