The MSMSF104+ from Digital-Logic is a highly integrated, PC/104-Plus compatible peripheral board with two StarFabric interfaces. The MSMSF104+ works with all common PC/104-Plus CPU boards and provides a data rate of up to 2,5 Gbps via two off-the-shelf RJ45 cables. The new peripheral board expands the capabilities of the PCI bus by providing higher levels of scalability and reliability to PCI-based systems and by using the advanced features of StarFabric.
StarFabric is a fully transparent serial PCI bus extension that expands the capability of the backplane bus outside of a computer casing over a length of up to 10 metres. The fast transmission technology is based on a switched network (Fabric) of serial interconnections and a bridge between the parallel PCI bus and this network. As StarFabric uses the PCI bus alternatively either as transparent or non-transparent bridge to the network, the PCI software and driver may be used unchanged. With the help of StarFabric switches, up to 1000 network nodes can communicate with each other and it is possible to build clusters by linking several CPU units to a network. In addition, StarFabric is remarkable for its hot-plug capability and its DOS and Windows software compatibility.
The MSMSF104+ works in different operating modes. In root mode, it is connected with a PC/104-Plus CPU board and operates as a typical periphery board with bridge functionality as a transceiver. In leaf mode the board works as a receiver and operates with one to three periphery boards. In this case the MSMSF104+ takes over all functions of a CPU, ie, it generates the PCI clocks, interrupts, GNT/REQ, reset signals, and the 3,3 V and 5 V voltages. As soon as the CPU is started with the root mode StarFabric chip, all PCI chips are initialised and provided with device numbers. This applies also to all periphery boards that are connected via the StarFabric network.
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