Abit PR5 User Manual page 33

AMD–K5 CPUs (AMD-SSA/5 & AMD-K5)
Clock Chip: PLL52C61-01 or PLL52C61-21
Ext. Clock Factor
CPU:Ext/Int Clock
P R 7 5 : 5 0 / 7 5 M H z
P R 9 0 : 6 0 / 9 0 M H z
P R 1 0 0 : 6 6 / 1 0 0 M H z O F F O F F
P R 1 2 0 : 6 0 / 9 0 M H z
P R 1 3 3 : 6 6 / 1 0 0 M H z O F F O F F
P R 1 5 0 : 6 0 / 1 2 0 M H z O F F O N
P R 1 6 6 : 6 6 / 1 3 3 M H z O F F O N
Clock Chip: PLL52C59-14T or ICS9159-14
Ext. Clock Factor
CPU:Ext/Int Clock
P R 7 5 : 5 0 / 7 5 M H z
P R 9 0 : 6 0 / 9 0 M H z
P R 1 0 0 : 6 6 / 1 0 0 M H z O F F
P R 1 2 0 : 6 0 / 9 0 M H z
P R 1 3 3 : 6 6 / 1 0 0 M H z O F F
P R 1 5 0 : 6 0 / 1 2 0 M H z O F F
P R 1 6 6 : 6 6 / 1 3 3 M H z O F F
Note:
ICS9159-14 does not support Turbo mode at 75MHz
ISA Spd. – ISA Bus Clock speed, see page 2-19
Refresh – DRAM refresh [reserved for future use] always OFF
DS8 – reserved for future use, always OFF
Ext. Clock Freq.: Normal/Turbo
D S 1 D S 2 D S 3
O F F O F F O N / — O N / — O N / —
O F F O F F O N / O F F O N / O F F O F F / O N
OF F/ OF F O N / O F F O N / O F F
O F F O F F O N / O F F O N / O F F O F F / O N
OF F/ OF F O N / O F F O N / O F F
O N / O F F O N / O F F O F F / O N
OF F/ OF F O N / O F F O N / O F F
Ext. Clock Freq. —(Norm/Turbo)
D S 1 D S 2 D S 3
O F F O F F O N
O F F O F F O F F
O F F O N
O F F O F F O F F
O F F O N
O N O F F
O N O N
D S 4 D S 7
D S 4 D S 7
O N O F F / O N
O N O F F / O N
O F F O F F / O N
O N O F F / O N
O F F O F F / O N
O N O F F / O N
O F F O F F / O N
ISA Spd Refresh
D S 5 D S 6
O F F O F F
O N O F F
O N O F F
O N O F F
O N O F F
O N O F F
O N O F F
ISA Spd Refresh
D S 5 D S 6
O F F O F F
O N O F F
O N O F F
O N O F F
O N O F F
O N O F F
O N O F F