KEYWORDS: Logic, Data transmission, Data modeling, Control systems, Semiconducting wafers, Control systems design, Interfaces, Standards development, Connectors, Stars
Twenty-one cards access VME64x IPC in the wafer stage control system. So many dedicated boards share one bus lead to increased latency data transmission on the bus. This article uses a low-cost bus upgrade logic module to improve the data transmission capacity of the bus. This module use the 2eVME protocol which VME64x protocol support. The logical interface designed introduced in detail in this paper. Also a simulation experiment is conducted. The simulation results are consistent with the theory. Transferring large amounts of data, the speed of the bus protocol can reach 2 times the ordinary VME protocol speed.
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