1. Asis AdvancedTCA Class 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.

2. Asis AdvancedTCA Class Backplane topologies The AdvancedTCA® architecture defines the ability to build a flexible Backplane that can support a variety of fabric topologies depending upon what types of Boards are installed. It is also possible to build Application topology specific Star Backplanes that can be built for a reduced cost. The following sections describe in detail several fabric topologies that are expected to cover the majority of application requirements and can be supported 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.

3. Asis AdvancedTCA Class Backplane fabric topologies - Dual Star Dual 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 one Channel. 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 establish Redundant 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 Interface Is always routed as a Dual Star with Hub Slots Located in Logical Slots 1 & 2.

4. Backplane 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. Asis AdvancedTCA Class

5. Full 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 Full Channel connections among All Slots at a signal rate of 2.5 Gbps per Port (full duplex). Multiple redundant Connections among Boards enable highly 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 makes maximum 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. Asis AdvancedTCA Class

7. Clock and update channel FabricInterface BasicInterface Zone 2 Zone 1 Power and managementInterface

8. Asis AdvancedTCA Class Asis’ 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:

9. Asis AdvancedTCA Class 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 zonewww.asis-pro.com In order to download the manual.