66mhz ext. 60mhz ext. 50mhz ext, 40mhz ext, User’s manual – Asus P/I-P55SP3AV User Manual
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P/I-P55SP3AV
User’s Manual
CPU External Clock Speed Selector: JP26& JP27
Set these as shown, according to the CPU's internal clock speed.
Int. Clk
Ext. Clock
JP26
JP27
Int. Clk Multiple
166MHz
66Mhz
2&3
1&2
2.5
X
Ext. Clock
150MHz
60Mhz
1&2
2&3
2.5
X
Ext. Clock
133MHz
66Mhz
2&3
1&2
2
X
Ext. Clock
120MHz
60Mhz
1&2
2&3
2
X
Ext. Clock
100MHz
66Mhz
2&3
1&2
1.5
X
Ext. Clock
90MHz
60Mhz
1&2
2&3
1.5
X
Ext. Clock
75MHz
SOMhz
2&3
2&3
1.5
X
Ext. Clock
40Mhz
1&2
1&2
1.5
X
Ext. Clock
Important CPUs are normally listed by their
internal dock
speed, as
shown above. You MUST also set JP14 & JP15 for the correct multiple of
the external clock speed.
O
o
-O "O
ISJ
N3
^ 03
o
o
■ n “D
ro N3
03
o o
C- C—
"O "O
PO PO
03
66MHz Ext. 60MHz Ext. 50MHz Ext.
o o
c_ c_
“D -D
ro ISO
03
40MHz Ext.
4-6