Kontron AT8242 - Manual (Page 22)

Product Description
6 AT8242
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knowing the type of RTM inserted, the IPMC negotiates with the shelf manager in order to activate the +12V
payload power. After RTM local voltages have been ramped up, the RTM’s MMC enables the RTM Link.
After this the front board IPMC informs the shelf manager there is a functional RTM blade present.
1.6.1.2.2 Removing the RTM8242 from the slot
The RTM_EJECT signal goes HIGH by opening the RTM lower ejector handle. This indicates to the front blade
IPMC that a hot swap action is going to take place. The IPMC then negotiates the removal with the System
manager and if it is granted, it proceeds with the removal process.
The IPMC proceeds to the deactivation by disabling ekey governed links, the IPMC then disables the RTM Link
and turns OFF the payload +12V power. When it is safe to remove the RTM blade from the slot, the IPMC turns
the Blue / Hot Swap LED ON. Front Blade IPMC turns OFF the management power only when there is no RTM
detected. (RTM8242 removed from the slot)