Intel SBC-370 manual Jumpers, CPU Frequency Setting JP3, CPU Multiplier Setting JP8

JUMPERS

The default settings are highlighted in the tables that follow.

CPU Frequency Setting (JP3)

Frequency	1-3	2-4	3-5	4-6
50 MHz	OFF	OFF	ON	ON
66 MHz/100 MHz*	ON	ON	OFF	OFF
75 MHz	OFF	ON	ON	OFF
83.3 MHz	ON	OFF	OFF	ON

*Intel Celeron CPU will auto-detect 66 MHz.

*Intel Pentium III (FC-PGA) CPU will auto detect 100MHz. *Refer to figure 2 for the location of JP3.

CPU Multiplier Setting (JP8)

Ration	1-2	3-4	5-6	7-8
3.0 x	ON	OFF	ON	ON
3.5 x	ON	OFF	OFF	ON
4.0 x	OFF	ON	ON	ON
4.5 x	OFF	ON	OFF	ON
5.0 x	OFF	OFF	ON	ON
5.5 x	OFF	OFF	OFF	ON
6.0 x	ON	ON	ON	OFF
6.5 x	ON	ON	OFF	OFF
7x	ON	OFF	ON	OFF
7.5x	ON	OFF	OFF	OFF
8x	OFF	ON	ON	OFF

Refer to figure 2 for the location of JP8.

Watchdog Timer Type Setting (JP5)

The Watchdog Timer is enabled by reading port 443H. It should be triggered be- fore the timeout period ends; otherwise, it will assume the program operation is abnormal and will issue a reset signal to reboot or activate NMI to CPU. The Watchdog Timer is disabled by reading port 043H.

Pin Number Description

1-2NMI

2-3RESET

Refer to figure 2 for the location of JP5.

Board Configuration 13