The design of digital fault recorder module based on S12XD
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The hardware architecture and software designs of the digital fault recorder module are described in this paper. The enhanced MSCAN module and the XGATE co-processor of S12XD MCU are used to receive and manage the operate data through high-speed CAN bus. F-RAM is used as non-volatile data storage memory. The software, especially mentioned XGATE and fault data storage strategy, is discussed in detail. This module has been applied in the distributed generator excitation equipment.