2.7Switches

The following figure shows the location and default settings of the DIP switches on the motherboard.

Keep the default settings for stable system operation.

CLKSW

OFF

 

 

5

34

 

2

1

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U78

OFF

 

8

7

6

5

4

3

2

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NR-LSR

NR-LSR DIP Switches

1.Frequency Selection 2.Frequency Selection 3.Frequency Selection 4.Frequency Selection 5.Spread Spectrum

1.Reserved

2.Reserved

3.Reserved

4.Reserved 5.Frequency Multiple 6.Frequency Multiple 7.Frequency Multiple 8.Frequency Multiple

1.CPU external frequency selection (CLKSW Switches 1-5)

This option tells the clock generator what frequency to send the CPU. This allows the selection of the CPU’s external frequency (or Bus Clock). The BUS Clock multiplied by the Frequency Multiple equals the CPU’s internal frequency (the advertised CPU speed).

To select the CPU external frequency using the DIP switches, ensure that the JEN jumper is set to jumper mode.

CLKSW

 

5

34

2

 

1

 

 

5

34

2

1

 

5

34

 

2

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

ON

 

 

 

 

 

ON

CPU 100MHz

101MHz

103MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

34

2

1

 

5

34

2

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPU 105MHz 110MHz

NR-LSR

NR-LSR CPU

External Frequency Selection

ASUS NR-LSR motherboard user guide

2-13