Study and Design of NCSF Bus System Based on SoC

In order to meet the application requirements of the NC system software on a strong real-time,high reliability bus system,an implementation method of NCSF(Numerical Control Synchronous FieldBus) bus system based on SoC(System on Chip) was presented.Implemented the application layer and data link layer of NCSF protocol stack in the FPGA chip and left profile layer in NC computer for further realization,these two parts communicated via a PCI interface.The test results showed this new design could provide a communication service that had 100Mps rate,31.25μs communication cycle and its synchronization jitter was less than 0.6μs.And it can met the requirements of the high-end NC machine tool.