Frequency Ratio Select (By Sw3 Dip1-Dip5) - SOLTEK SL-75KIV User Manual

75KIV

2-4-4 FREQUENCY RATIO SELECT (BY SW3 DIP1-DIP5)

•
The AMD Athlon and Duron processors provide four Frequency ID signals
(FID) respectively via DIP 1 to DIP4 of SW3 for the system controller to
specify the SYSTCLK multiplier at which the processor core operates.
Normally, the multiplier (or bus ratio) is detected automatically by FID.
Therefore, if the processor does not support the function, then "Bus Ratio"
can not be selected.
•
When JP17 is "ON", LED "LED1" will be on. It means that bus ratio
select function is enabled. So as long as your CPU supports bus ratio
select function, then the bus ratio can be selected by users.
JUSB1
3 1
SOCKET A
5.5x
6.5x
7.5x
8.5x
9.5x
10.5x
11.5x
*12.5x
or
13.0x
SW1 FAN1
1 3
Clock
Generator
RT2
VIA
VT8363A
SW3 DIP1 ~ DIP5 SETTING
6.0x
(Default)
7.0x
8.0x
9.0x
10.0x
11.0x
12.0x
14.0x
24
*Note:
Setting of multipler 12.
5x or above will depend
on the type of CPU on
board.
LED1
SW3 DIP5
Bus ratio detected
by FID (Auto)
Bus ratio selected
by SW3 DIP 1-4
SW3 DIP 5 allows
you to enable or
disable the
"Frequency Ratio
Select" function.