Sw3, Sw5, Sw6, Sw7, Sw8: Cpu Frequency Select - TMC AI5TV User Manual

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Table Of Contents

Table of Contents

Chapter 3 Configuring the AI5TV

SW1: AT Bus Clock Select

Use this DIP-Switch to select the frequency of the AT bus clock

(ATCLK). The ATCLK is derived from the PCI clock (PCLK) as

PCLK/3 or PCLK/4 and the PCLK is derived from the CPU clock

(CLK) as CLK/2.

For example, for a Pentium 100MHz system, the CLK would be

66MHz so the PCLK/2 equals to 33MHz. You would set SW1 as

PCLK/4 where ATCLK would be 8.3MHz.

SW1

AT Clock

OFF

PCI Clock/3

PCI Clock/4 (Default setting)

SW2: CPU Voltage Select

SW2

JP25

OFF