Asis AdvancedTCA Class What is a Backplane? A backplane is an electronic circuit board Sometimes called PCB (Printed Circuit Board) containing circuitry

Asis AdvancedTCA ClassAsis AdvancedTCA Class

What is a Backplane?What is a Backplane?A backplane is an electronic circuit board Sometimes called PCB (Printed Circuit Board) containing circuitry and sockets into which Additional Electronic devices on other circuit boards or cards can be plugged , The AdvancedTCA Spec defines the Backplane thickness , Number of Slots and Alignment keying Position.

The backplane can be a monolithic backplane (one piece) or Separated Backplanes connected via cable or another method.


Backplane topologiesBackplane topologiesThe AdvancedTCA® architecture defines the ability to build a

flexibleBackplane that can support a variety of fabric topologies

depending upon what types of Boards are installed. It is also possible to build

Applicationtopology specific Star Backplanes that can be built for a reduced

cost. The following sections describe in detail several fabric topologies

thatare expected to cover the majority of application requirements

and can besupported with PICMG® 3.0 Backplanes.

Supporting multiple fabrics and/or topologies within a single system

environment can be advantageous both for :Communications applications that require high speed, low latency data-plane interconnects.Control-plane interconnects with less stringent latency and jitter requirements.


Backplane fabric topologies - Dual StarBackplane fabric topologies - Dual StarDual Star Topology Backplanes require two dedicated Slots (Hub Slots) for Hub Boards to be inserted. These Slots are Logical Slots 1 and 2.Each Hub Slot has a Channel connection to each Node Slot in the Backplane.The two Hub Slots are also connected to each other in the Backplane by oneChannel.

A PICMG® 3.0 Dual Star Backplane contains redundant Hub Slots (in Logical Lots 1 & 2) And routes traces between each Hub Slot to every Node Slot. Identically configured Hub Boards can be used in both Hub Slots to establishRedundant Channel connections to each Node Slot/Board. Node Slots and Node Boards use, at a minimum,Channels 1 & 2 for connection to the fabric.

In a PICMG® 3.0 Backplane, the Base InterfaceIs always routed as a Dual Star with Hub Slots Located in Logical Slots 1 & 2.

Backplane fabric topologies - Full MeshBackplane fabric topologies - Full Mesh

Mesh topologies provide a direct data path (i.e., Channel) to/from Each

Board in the system, In a system consisting of n Slots, there are n-1

Channel from each Slot to All Other Slots. That is n x (n–1)/2 Channel in

total. A Full Mesh Backplane requires a larger Number of Backplane trace

routes and connector pins per Slot than the Star configuration But offers several advantages such as system scalability, system redundancy, And physical Efficiency.

In a Mesh configuration, the Fabric Interface capacity grows with Each Board added.


Full Mesh Topology ContinueFull Mesh Topology Continue

For example, a system comprised of 14 Slots is capable of delivering a total raw aggregate System bandwidth of 2.4 Tbps, assuming FullChannel connections among All Slots at a signal rate of 2.5 Gbps per

Port(full duplex). Multiple redundant Connections among Boards enablehighly reliable systems with graceful degradation Fault tolerance.

Mesh configurations do not utilize a central switch fabric, all Slots Can be used for data forwarding and processing Resources, which makesmaximum Use of the physical system capacity.

Another advantage Of the Full Mesh topology is Reduced startup cost for

partially equipped systems.

Further, all Slots are identical, which eases installation and serviceability

of the system.




Clock and update Clock and update channelchannel

Fabric Fabric

InterfaceInterface

BasicBasic

InterfaceInterface

Zone Zone 22

Zone Zone 11

Power andPower and

managememanagementnt

InterfaceInterface


Asis’ BackplanesAsis’ Backplanes

Asis is world leader in backplane manufacturing and has a vast experience

in the Backplane design field.

Asis manufacture ATCA, CompactPCI, µTCA and propriety Backplanes for a

variety of clients known as world leaders such as Rad Audio Codes and many more.

Here are some ATCA Backplanes:


In order to get further information about the Chassis

Please refer to the chassis user Manual.At www.asis-pro.com, login at the Partners zone

In order to download the manual.

http://www.asis-pro.com/

Documents

Asis AdvancedTCA Class What is a Backplane? A backplane is an electronic circuit board Sometimes called PCB (Printed Circuit Board) containing circuitry