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本文详细分析了ADSL系统中ATM层和物理层之间的UTOPIA LEVEL2接口时序,采用FPGA实现了UTOPIA接口设计,应用在ADSL系统中,数据收发正确,工作稳定;该方案的实现对解决现有专门通信芯片的成本较高、功能固定和灵活性较差等缺点具有较大的实际意义和应用价值。
This paper analyzes in detail the timing of the UTOPIA LEVEL2 interface between the ATM layer and the physical layer in the ADSL system, and implements the UTOPIA interface design by using the FPGA. The data is transmitted and received in the ADSL system with correct data transmission and stable operation. The high cost of communication chips, fixed functions and poor flexibility and other shortcomings have great practical significance and application value.