Artesyn ATCA-9305 User's Manual (May 2014) - Manual (Page 197)

System Management
ATCA-9305 User’s Manual (10009109-07) 197
I
2
C Port Expander
The I
2
C port expander provides signals to the payload to define the boot device selection (boot
select [1 and 2]) and to clear the payload reset indication. The I
2
C port expander
communicates with the controller via a private I
2
C.
Payload Reset
This signal is used by the management controller to reset the payload.
Monitor Booted
This signal indicates to the management controller that a valid monitor image has finished
booting and the watchdog can be disabled.
Power Good
This signal indicates to the management controller that the payload is powered. When payload
power is applied, the BMC watchdog will start.
Force Boot Socket
If a shunt is present on J9 [1:2], the controller sets the boot location to socket flash with this
signal.
Payload Reset Indication
When reset, this signal is held high by the payload until it is cleared by the IPMC using the
payload reset indication clear signal.
Boot Select [ ]
These signals select the boot device.
Payload Reset Indication Clear
This signal clears the payload reset indication.