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The foreign DP/PA coupler is realized by SIM1 + MCU chip, with a large number of procedures and codes completed by the software, which is very complicated, and technology is confidential. The paper puts forward a design method that we use the smart agreement chip SPC3 and SPC4 as the core to realize the function of the coupler, and use AT89S52 single-chip to control them. These chips are integrated...
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