Aaeon SBC-670, Manual

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Chapter 2 Hardware Configuration 15
CPU Frequency Select (JP4)
JP4 must be set to match the clock ratio of CPU. The chart below
shows the proper jumper setting.
CPU Frequency Select (JP4)
JP4
freq ratio = 2
freq ratio = 2.5
freq ratio = 3*
freq ratio = 3.5
freq ratio = 4
*default
CPU Bus Frequency Select (JP3)
JP3 must be set to match the CPU Bus frequency. The chart below
shows the proper jumper setting.
CPU Bus Frequency Select (JP3)
JP3
60 MHz 2 4
1 3
66 MHz*
*default
2 4 6 8
1 3 5 7
2 4 6 8
1 3 5 7
2 4 6 8
1 3 5 7
2 4 6 8
1 3 5 7
2 4 6 8
1 3 5 7
2 4
1 3