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aTCA-3710 User's Guide
28
Byte
Data Field
Event Status” command for the sensor before the update has completed. This is most likely to be the
case for sensors, such as
fan RPM sensors, that may require seconds to accumulate the first reading after a re-arm.
[4:0] – Reserved. Ignore on read.
4
[7:4] – Reserved. Write as 0h, ignore on read
[3] 1b = IPMB A enabled, IPMB-B enabled
[2] 1b = IPMB A disabled, IPMB-B enabled
[1] 1b = IPMB-A enabled, IPMB-B disabled
[0] 1b = IPMB A disabled, IPMB-B disabled
(5)
[7:0] – Optional/Reserved. If provided, write as 80h (IPMI restriction). Ignore on read.
5.3.3 Watchdog Timer Sensor
Sensor Type
Sensor
Type Code
Sensor
Specific Offset
Event
Watchdog 2
23h
00h
01h
02h
03h
04h-07h
08h
This sensor is recommended for new IPMI v1.0 and later implementations.
Timer expired, status only (no action, no interrupt)
Hard Reset
Power Down
Power Cycle
reserved
Timer interrupt
The Event Data 2 field for this command can be used to provide an
event extension code, with the following definition:
7:4 interrupt type
0h = none
1h = SMI
2h = NMI
3h = Messaging Interrupt
Fh = unspecified
all other = reserved
3:0 timer use at expiration:
0h = reserved
1h = BIOS FRB2
2h = BIOS/POST
3h = OS Load
4h = SMS/OS
5h = OEM
Fh = unspecified
all other = reserved