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Processor host core bus ratio
Jumper block J1E2 configures the host-core bus ratio. By default, the bus ratio is two
to 11 and the core frequency is 733 MHz.
The following illustration shows the jumper settings.
Miscellaneous jumper settings
Jumper blocks J2E2 and J9H1 enable server management write-protect, disable the
FRB, enable the FSB in common clock mode, and apply power to the pull-ups on the
ISP chain for stand-alone programming. Additionally, the jumpers select between
using J1E2 or BMC auto detect of processor frequency to set the host core bus ratio.
By default, the FSB is enabled in common clock mode, power is not applied to pull-
ups, and the J1E2 jumper determines the host core bus ratio.
The following illustration shows the jumper settings.
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Hardware Maintenance Manual: xSer ies 380
1
Two to 10 Bus Ratio with 667 MHz Core Frequency
2
Two to 11 Bus Ratio with 733 MHz Core Frequency
3
Two to 12 Bus Ratio with 800 MHz Core Frequency
4
Processor Frequency Auto Detect (Default Setting)
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