User`s manual

10 PCN-6351/6351L User's Manual
1.6.3 PCI bus / CPU frequency setting (SW1)
Table 1-4: PCI bus / CPU frequency setting (SW1)
CPU frequency setting
PCI CPU Pin 5 Pin 6
27.5 55 ON ON
37.5 75 OFF ON
30 60 ON OFF
33.3 66 OFF OFF