Kontron RTM8050 - Manual (Page 26)

Board Features
13 RTM8050
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When the RTM latch is disengaged from the faceplate, the hot swap switch embedded in the PCB will assert a
"HOT_SWAP_PB#" signal to the MMC, and the MMC will send “Module Handle Open” event message to the
front board which moves from the M4 state to the M5 state. At the M5 state, the front board will ask the SHMC
(or Shelf Manager) for permission to move the RTM to the M6 state. Then the IPMC of the front board,
through IPMB-L, will set the RTM/HDD Hot Swap LED to indicate this state with a short blink. Once
permission is received from the SHMC or higher-level software, the front 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 RTM/HDD
will returns the Hot Swap LED to a solid off condition, indicating that the RTM has returned to M4 state.
If the RTM/HDD reaches the M6 state through an extraction request through the RTM/HDD handle latch, the
MMC communicates to the front board that the module must discontinue operation in preparation for
removal. The Hot Swap LED continues to flash during this preparation time, just like it does at the M5 state.
When main RTM/HDD payload power is successfully removed from the RTM/HDD slot, the Hot Swap LED
remains lit, indicating it is safe to remove the RTM from the chassis or the hard disk from the RTM.
Refer to the AT8050 manual for information on "Managed FRU Deactivation Policies" affecting the FRU
deactivation process.
2.9 Face Plate Indicators
All LEDs can be overriden with standard PICMG LED APIs
2.9.1 Hot Swap LED (LED0)
The Blue / Hot Swap LED indicates the hot swap status of the RTM. The LED is ON when it is safe to remove the
RTM from the slot. During normal operation, this LED is OFF.
2.9.2 Out Of Service (LED1)
The AdvancedTCA LED1 is red or amber and indicates an Out-of-Service (OOS) condition. During normal
operation, the OOS LED is OFF. This LED is ON during firmware upgrade and is user configurable if needed by a
customer application.
2.9.3 Healthy LED (LED2)
The AdvancedTCA LED2 is green or amber and indicates a healthy condition. The healthy LED indicates if the
blade is powered up and all voltages and temperatures are within specifications. During normal operation,
this LED is ON (green). This LED is also ON (amber) when one of the RTM8050 voltage or temperature fails.
2.9.4 RTMDISK Hot Swap LED
The Blue / Hot Swap LED indicates the hot swap status of the RTMDISK. The LED is ON when it is safe to
remove the RTMDISK from the RTM. During normal operation, this LED is OFF.