Abit IT5A User Manual page 24

2-12
1. IT5A CPU frequency setting (SW2)
The following tables will present the adjustment for the 586 CPU series.
Please setup the correct adjustment regarding the CPU type and brand.
Clock Chip:PLL52C66-08
External Clock
60MHz
66.6MHz
68MH
75MHz
83.3MHz
100MHz
Intel CPU
Intel External
Pentium/with
Clock
MMX
P100 66MHz 100MHz OFF OFF OFF OFF OFF ON
P133 66MHz 133MHz ON
P166 66MHz 166MHz ON
P200 66MHz 200MHz OFF ON
P233 66MHz 233MHz OFF OFF OFF OFF OFF ON
AMD CPU
AMD- External
K5/K6 Clock
K5-PR100 66MHz 100MHz OFF OFF OFF OFF OFF ON
K5-PR133 66MHz 100MHz ON
K5-PR166 66MHz 117MHz ON
K6-166 66MHz 166MHz ON
K6-200 66MHz 200MHz OFF ON
K6-233 66MHz 233MHz OFF OFF OFF OFF OFF ON
K6-266/3D 100MHz 266MHz ON
K6-300/3D 100MHz 300MHz OFF ON
AGP
60MHz 30MHz
66.6MHz 33.3MHz ON
68.4MH 34.2MH
60MHz 30MHz
66.6MHz 33.3MHz OFF
66.6MHz 33.3MHz OFF
Internal External Clock
Clock Factor
DS1 DS2 DS3 DS4 DS5 DS6 DS7
OFF OFF OFF OFF ON
ON
Internal External Clock
Clock Factor
DS1 DS2 DS3 DS4 DS5 DS6 DS7
OFF OFF OFF OFF ON
ON
ON
ON
PCI DS6
ON
ON
OFF
Reserve External Clock
Frequency
OFF OFF OFF ON
OFF OFF OFF ON
Reserve External Clock
Frequency
OFF OFF OFF ON
OFF OFF OFF ON
OFF OFF OFF ON
OFF OFF OFF OFF OFF OFF
OFF OFF OFF OFF OFF OFF
Chapter 2
DS7
ON ON
ON OFF
OFF ON
ON ON
ON OFF
OFF OFF
DS8
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
DS8
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF
DS8