Kontron RTM8940 - Manual (Page 17)

Product Description
4 RTM8940
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1.4 Hot-Swap Capability
The RTM8940 supports Full Hot Swap capability as per PICMG3.0 R3.0. It can be removed from or installed in
the system while it is on (without powering-down the system). Please refer to the PICMG3.0 R3.0
specification for additional details.
1.5 Interfacing with the Environment
1.5.1 RTM (rear transition module)
The RTM8940 is a single slot (6HP) AdvancedTCA Rear Transition Module. This module provides additional
connectivity for AT8940 Hub front boards.
1.5.1.1 FRU Data EEPROM
• FRU Data EEPROM size is 32Kbit and it includes board identification and serial number information.
1.5.1.2 Hot Swap
As a Hot Swappable Intelligent Managed FRU, the RTM8940 (FRU2) includes a Management Controller, the
AdvancedTCA Hot Swap indicator (Blue LED) and the standard AdvancedTCA handle switch.
1.5.1.2.1 Insertion and Removal of the Managed FRUs
After insertion, the front board detects and activates the management components of the FRU. When the
handle is closed, the power budget and the e-keying negotiations start. Then, the front board's IPMC
activates the payload components of the FRU.
Opening the RTM handle switch on the RTM FRU and will start the deactivation process, which deactivates the
RTM8940.
The operational state of the FRU is reported through the management subsystem FRU Hot Swap sensors. The
BLUE LED is 100% off when a FRU is operational and unsafe for extraction. An always on(100%) indicates
that a FRU can safely be extracted; transitional states are identified through blinking patterns. Additional
details on the standard FRU Hot Swap sensor and the BLUE LED usage can be found in the AdvancedTCA
specifications.