ADLINK aTCA-6200A - Manual (Page 34)

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Byte Data field
[6] – 0b = Sensor scanning disabled
[5] – 1b = Initial update in progress. This bit is set to indicate that a
“Re-arm Sensor Events” or “Set Event Receiver” command has been used
to request an update of the sensor status, and that update has not
occurred yet. Software should use this bit to avoid getting an incorrect
status while the first sensor update is in progress. This bit is only required
if it is possible for the controller
to receive and process a “Get Sensor Reading” or “Get Sensor
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.
4.2.3 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