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VadaTech kits out MCH with 40GbE option, advanced clocking

Posted: 05 May 2014 ?? ?Print Version ?Bookmark and Share

Keywords:VadaTech? MCH?

VadaTech Inc. has launched a MicroTCA Carrier Hub (MCH) that the company claims will change the way module-based systems can be developed on the basis of the following features: a 40GbE option and advanced clocking/synchronisation capability.

The UTC004's 40GbE option boasts up to four times boost in performance compared with today's 10GbE solutions. It provides PCIe Gen 3, SRIO Gen 2, and a crossbar switch (CBS) option. This allows any fabric to be used, including custom designs.

The advanced clocking/synchronisation capability, on the other hand, enables highly flexible master/slave clock and time synchronisation to multiple clocking standards including GPS, IEEE1588 (PTP), SyncE, and NTP. The MCH bridges these standards together to provide Grand Master Clock capability to the chassis network.

For backplane and front panel clocking, the MCH features a low-latency, low-jitter, low-skew M-LVDS clock matrix to ensure the best possible backplane clocking solution. A quad PLL clock network synchroniser enables synchronising clocks with hitless failover referenced to clocks/pulses coming from the front panel, backplane, on-board GPS/IEEE1588 (PTP)/NTP 1PPS, or SyncE ports. These PLLs can then jitter clean or synthesise arbitrary frequency clocks and pulses to output to the front panel or backplane with up to Stratum-3 holdover criteria.

The result of all of these features is precision timing, aligned frequency/phase of the signals, and eliminating the risk of packet loss due to buffer overflow. These features are important for Communications, MIL/Aero, and Physics applications where synchronised timing is critical.

In addition to a management Ethernet RJ45 port, the MCH provides a base channel Ethernet fabric with two front panel 10GBase-T RJ-45 ports for 20Gb combined uplink bandwidth as standard. When a Fat Pipes fabric is ordered, additional uplink ports are provided such as QSFP+, Dual SFP+, or Dual 10GBase-T RJ45 for Fat Pipes fabric uplink; providing up to an additional 40Gb of uplink bandwidth.

Another feature of the UTC004 is a JTAG Virtual Probe. Typically, an option in MicroTCA systems is a JTAG Switch Module for attaching a dongle to the physical chassis for programming or de-bugging. The Virtual Probe allows this work to be done remotely, which is more convenient and a significant advantage in deployed applications.

UTC004 block diagram

- Nick Flaherty
??EE Times Europe

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