Aaeon SBC-557, Manual, Page: 31 / 123

Chapter 2 Installation 21
CPU Clock select S2 (1~3)
CPU vcore frequency=External CPU clock (60~100 MHz) * CPU
frequecny ratio (2~5.5X). The following table shows the available
CPU external clock configuration.
CAUTION: Improper settings may damage the CPU!
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
CPU clock select S2 (1~3)
60 MHz 66 MHz* 75 MHz
83 MHz 95 MHz 100 MHz*
*default
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
1
2
3
4
5
6
ON
6
5
4
3
2
1
ON
1
2
3
4
5
6
ON