Kontron AT8402, Руководство пользователя

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AT8402 Software Description
Page 4 - 15 AT8402 User Guide
4.4.5.2 Out-Of-Service (OOS) LED (ATCA LED1)
Red LED
4.4.5.3 Health LED (ATCA LED2)
Green LED
4.4.5.4 Customer Definable LED (ATCA LED 3)
This is an amber LED which can be used by a customer application. This LED can be controlled
by PICMG 3.0 defined LED commands.
4.4.6 Hot Swap Process
The AT8402 Carrier Board has the ability to be hot-swapped in and out of a chassis. The on-
board IPMC manages the power-up and power-down transitions.
In addition to captive retaining screws, the AT8402 Carrier Board has two ejector mechanisms
to provide a positive cam action; this ensures the blade is properly seated. The bottom ejector
handle also has a switch that is connected to the IPMC to determine if the board has been prop-
erly inserted.
When the lower ejector handle is disengaged from the faceplate, the hot swap switch will assert
a signal to the IPMC, and the IPMC will move from the M4 state to the M5 state. At the M5 state,
the IPMC will ask the ShMC for permission to move to the M6 state. The Hot Swap LED will
indicate this state with a short blink. Once permission is received from the ShMC or higher-level
software, the board will move to the M6 state. The ShMC or higher level software can reject the
request to move to the M6 state. If this occurs, the Hot Swap LED returns to a solid off condition,
indicating that the Carrier Board has returned to M4 state.
Table 4-5: OOS LED state
LED state Description
ON 1) The bootup handshake between FUM and IPMC is not finished or failed
2) The firmware update is in progress and the new IPMC firmware image is
copied to the FUM
3) power denied from ShMgr
Blinking The FUM is programming the IPMC due to a firmware update or a rollback
OFF The IPMC is operational
Table 4-6: Health LED state
LED state Description
ON None of the health sensors is asserted
Blinking At least one health sensor is asserted