The FireAdapter product familycomplements DapTechnology’s successful FireSpy®and FireTrac® host adapter product lines. It clearly is a powerful platform for standard IEEE1394 as well as Mil1394 (AS5643) data transfer. The family aims at addressing the most common requirements with regards to physical interface type (copper vs. optical), number of buses, active transformer coupling, etc.
DapTechnology has seen a continued and steady demand for general purpose hardware systems for the processing of AS5643 (and generic 1394) data streams. Often driven by the existence of SW layers interfacing directly to OHCI compliant interfaces, customers look for equivalent platforms but application-specific physical interfaces. Mil1394 active transformer coupling, optical interconnectivity and even extended speeds are the typical requirements.
The FireAdapter familyis the answer for these market needs. The combination of innovative physical connectivity layers with standardized OHCI Link Layer chip functionality makes these interface cards a perfect platform for both IEEE-1394 as well as Mil1394 applications. Optionally, FireAdapter cards are used together with FireStack®, i.e. DapTechnology's home-grown IEEE-1394 software stack. This very robust and well-designed 1394 software stack runs on a host computer and very effectively supports the OHCI descriptor model for packet assembly and disassembly. Interfacing to this stack can be done via an API which offers C/C++ interfaces and runs on several different operating systems.
Mil1394 FireAdapter cards take an OHCI-compliant design to a new level by adding Mil1394 support by adding active transformer. Their addition ensure compliance of the physical layer with the AS5643 specification.
DapTechnology has seen an increasing demand for such dedicated Mil1394 hardware systems for the processing of AS5643 (and generic 1394) data streams. However, it is important to understand that FireAdapter cards do not extend AS5643 support to the ASM level. They do not support hardware assisted ASM packet encapsulation (both header and payload), filtering and content verification, as well as ASM and STOF packet timing (Transmit offsets, Receive offset verification). All these function have to be handled in the application level. Please note that with FireTrac DapTechnology offers a HW assisted solution to the tasks and encourages customers to evaluate this solution for its much more advanced implementation of AS5643 functionaltiy.