System Board Layout
007-4263-001
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Table 3-3 provides the frequency settings for the JPX1 jumper. JPX1 sets the ratio between
the front side bus (FSB) frequency and the CPU internal clock frequency. This
information is only required if installing a CPU other than the one supplied by SGI.
Note:
This frequency setting table is for reference only and is reserved for use by
customer service technicians. The CPU frequency is automatically set and should not be
tampered with.
Table 3-3
Frequency setting
1
2
3
4
Frequency
On
On
On
On
2
On
On
Off
On
2.5
On
Off
On
On
3
On
Off
Off
On
3.5
Off
On
On
On
4
Off
On
Off
On
4.5
Off
Off
On
On
5
Off
Off
Off
On
5.5
On
On
On
Off
6
Summary of Contents for 230
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