Chapter 3
Installing the UltraSPARC-II Module
3-7
3.4
Completing the Installation
3.4.1
Changing the Clocking Select Jumper
The following table gives information about the clocking select jumper functionality.
The following figures show the location of the clocking select jumper on the main
logic board, and the two available jumper settings, respectively.
To change the jumper; use needlenose pliers to remove the jumper from position A
and to install the jumper at position B (see
FIGURE 3-7
).
TABLE 3-2
UltraSPARC Module Clocking Select Jumper Settings
Jumper
Pins 1 + 2 Select
Pins 2 + 3 Select
J2301
250-MHz or 300-MHz
UltraSPARC-II modules.
All UltraSPARC-I
168-MHz or 200-MHz, or
400-MHz UltraSPARC-II
module.
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