The PMC661J, implementing 100BaseTX connectivity, is capable of full duplex operation in both 100 and 10 Mbit modes. The PMC661J Ethernet/PCI interface includes a powerful DMA engine with very deep FIFO buffers. This assures continuous, full bandwidth operation with minimum PCI overhead. In addition, card edge PCI systems can be accommodated using GE Fanuc Embedded Systems’ #()* adapter, for rapid prototype and development.
The PMC661J features a full auto-negotiation facility allowing automatic configuration to the highest possible operating mode. This includes the option for automatic determination of both bandwidth and full duplex operation.
Two PMC661J boards can be directly cabled with a simple “cross-over”. This configuration creates a full duplex 100Mbit dedicated data path – delivering high bandwidth at very low cost. More complex, dedicated interconnects can be created using a hub or switch. Both point-to-point and switched hubs, in full duplex mode, remove many determinism concerns raised with traditional Ethernet solutions. This makes the PMC661J an excellent candidate for high performance interconnects that require real time determinism.
GE Fanuc Embedded Systems has software drivers for all the popular operating systems (e.g. VxWorks, LynxOS, Digital UNIX, Windows NT, Solaris, etc.). These drivers have been carefully designed and implemented to fit within the LAN protocol stack of the host operating system. In this way, all facilities available from the host OS can be utilized across the PMC661J. GE Fanuc Embedded Systems’ drivers allow for user control over the PMC661J auto-negotiation capability, enabling direct control of operating parameters.
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