Designing for 40G ATCA?

Artesyn Embedded Technologies 40G ATCA-7470

Telecoms design engineers face many challenges in implementing 40Gbit/s data-rate systems as they supersede traditional systems which have run at 10GBit/s or even less.

Acal BFi’s unrivalled product knowledge and close working relationship with manufacturers such as Artesyn Embedded Technologies, GE and Adlink mean we can steer you towards the system that best suits your needs.

The 40G speed means telecoms systems are better able to cope with higher internet traffic loads, such as those associated with video streaming. The increased signal speed that comes with 40Gbit/s has physical effects. In helping you understand these and the other technical challenges that come with increased capacity, Acal BFi’s expertise is invaluable.

Materials and design must take into account material-dependent relative permittivity as well as the ‘skin effect’, which is a type of resistance.

The application scenarios for bandwidth demand beyond 40Gbit/s are IO intensive, rather than compute intensive. Traffic to a payload slot is reduced below the physical limit of a slot bandwidth, and the flow affinity to a payload slot is maintained.

X86 architectures

Most of the payload blades in ATCA systems are complete blades with CPUs of x86 architectures. For traditional bladed architectures in ATCA, such as an SMP multi-core architecture with two CPUs and a 10Gbit/s network interface controller, it is already difficult to achieve higher data rates.

To achieve best performance it is necessary to use hardware features in modern NIC devices. Improvement comes via integrating the multi-queue features supported by the devices and PCI Express. Improvements include:

  • multi-queue support
  • task set affinity and IRQ affinity
  • direct cache access
  • large receive/segmentation offload, and
  • RX check sum generation and TX check sum check.

The future

The next tier of ATCA evolution is likely to be 100Gbit/s. To prepare systems, one option would be to improve channel characteristics by using better PCB material and connectors. A second option would be optical transmission. Both options are sustainable in terms of cost. The third option, to abandon base band modulation and choose a different modulation system, would be more costly in terms of silicon components.

Myrra launch the 48000 series – their smallest, complete AC/DC power supply solution for low-power electronic designs and devices

Myrra have launched their smallest-ever power supply, the 48000 series; available with seven output voltages – 3.3, 5, 9, 12, 15, 18 and 24Vdc

read more

Introducing M from Magnetics® – the new ferrite with 50% increased permeability

Developed by one of the world’s leading suppliers of precision soft magnetic materials and components, Magnetics’ new M material pushes the boundaries of ferrite class materials with a permeability of 15,000µ, one of the highest permeabilities available for ferrite materials.

read more

Case study and interview – Remote monitoring in open water

Find out how Acal BFi overcame an almost impossible brief with the latest IoT technology solutions and innovative design

read more