IBM CMX58886CX User Manual
Page 80
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.