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72 CMX58886CX cpuModule BDM-610000050 Rev A
Table 54 Reset Status Description and Priorites
I/O Address
457h
Reset
Signal
Reset
Priority
1
1. When a reset is asserted, all resets with a higher reset priority will also be asserted. For example, if the standby
power reset is asserted, all other resets will also be asserted.
Description
D7 Main Power (+5V) 2 Main input power to cpuModule (+5V)
D6 CPU Core Power 3 CPU core powers supply
D5 Non-Standby Power 3 Power supplies that are not for standby
power
D4 Memory Power 3 Power to onboard memory banks
D3 Standby Power 1 Standby power supplies
D2 Reserved - Reserved
D1 PCI Reset 4 PCI bus reset signal
D0 Utility Reset - Utiliy connector push button reset
2
2. The BIOS allows the user to change the function of the utiliy connector’s push button reset. If the push button
is not configured as a reset, this bit will always read a 0 (asserted) when the reset button has been pushed.