Aaeon SBC-555, Руководство пользователя

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Chapter 2 Installation 17
CPU I/O Voltage setting (JP3)
JP3 must be set to match the CPU type. The chart below shows
the proper jumper settings for their respective CPU I/O Voltage:
CPU I/O voltage (JP3)
3.5 V 3.3 V(Default)
PCI Bus Clock Sync / Async Mode settings
(JP5)
JP-5 allows users to select Sync or Async PCI clock. The Sync
PCI clock depends on half of the CPU external clock, in contrast,
the Async PCI Clock is fixed on 33MHz.
33MHz 25MHz 30MHz 33MHz
(Async Mode setting) (Sync Mode setting)
(Equal to 1/2 x CPU Ext. CLK)
(Default)
CPU External Clock Selection (JP6)
JP-6 allows users to select CPU External clock.
50 MHz 60MHz 66MHz(Default)
1 2 3 1 2 3
2 4 6
1 3 5
2 4 6
1 3 5
2 4 6
1 3 5