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aTCA-80606PA
3 ATCA Backplane
The 6-slot ATCA monolithic backplane provides:
•
Four ATCA Node slots
•
Two ATCA Hub slots
•
Two dedicated Shelf Manager slots
•
Two PEM slots
•
Two fan Tray slots
Within the Shelf, there is one fixed board-backplane. This board is completely passive and is
not Field-Replaceable Units. The 6-slot ATCA monolithic backplane provides 40Gb/s
connectivity (4 lanes with 10Gb/s).
3.1 Logical to Physical Slot Mapping
The physical and logical slots are sequentially numbered from the lower to the upper side of
the Shelf.
Table 2: 6-Slot ATCA Backplane physical to logical slot mapping
Physical Slot
Logical Slot
HW-Address
(Hex)
IPMB-Address
(Hex)
Update
Channel
Routing
Node
6
6
46
8C
●
●
Node
5
5
45
8A
Node
4
4
44
88
●
●
Node
3
3
43
86
Hub Slot
2
2
42
84
●
●
Hub Slot
1
1
41
82
3.2 Base Interface
Logical slots 1 and 2 are the hub slots for the Dual Star Base Interface. Base Interface
Channel 1 (ShMC) of logical slot 1 and 2 is cross connected to both dedicated Shelf
Manager slots on the ATCA Backplane (as per PICMG 3.0 R2.0:ECN 3.0-2.0-001).
3.3 Fabric Interface
The Fabric Interface in the ATCA Backplane is routed as dual star. See PICMG
®
3.0
AdvancedTCA Base Specification for details. Triple replicated full Mesh interconnecting
each ATCA slot is requested.
3.4 Synchronization Clocks
Six differential pairs of synchronization clocks are bused between all 6 ATCA slots and
terminated at both ends with 80.6 Ohms between each differential pair.
