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在 Ｔ Ｍ Ｓ３２０ Ｃ３１ 与 Ｄ Ｐ５３８０ 建立起来的外设端 Ｓ Ｃ Ｓ Ｉ接口电路的基础上，详细介绍了针对该电路实现 Ｓ Ｃ Ｓ Ｉ通信和 Ｄ Ｍ Ａ 传输的原理、具体方法和程序流程。
Based on the peripheral S C S I interface circuit established by T M S320 C31 and D P5380, the principle, the specific method and the program flow of S C S I communication and D M A transmission for this circuit are introduced in detail.