Table 54 Reset Status Description and Priorites

I/O Address

Reset

Reset

Description

457h

Signal

Priority1

 

 

 

 

 

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 reset2

 

 

 

 

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.

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.

72 CMX58886CX cpuModule

BDM-610000050 Rev A

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IBM CMX58886CX user manual Reset Status Description and Priorites, Address Reset Description