The VME320 backplane offers true 320 Mbytes/sec. bandwidth. In the VME320, a signal is driven from slot 1, goes to the middle slot and then radiates out to all other slots. All the capacitance concentrates at the middle slot instead of having a transmission line effect like a conventional shared-bus backplanes. The result is that the equivalent circuit of the backplane is a simple lumped 200 pF capacitance. In a standard VME backplane, the signals have propagation delay and must "wait" for their turn to

VME320 Backplanes
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Slot Count