一种低电源电压的多通道UART设计

Design of a Low Supply Voltage Multi-Channel UART

为了满足复杂控制场合中多点通讯、低功耗、高速率以及低错误率等的要求,提出了一个低电源电压的多通道通用异步收发器(URAT,Universal Asynchronous Receiver and Transmitter)设计方案。每个通道独立控制,发送端和接收端配置的FIFO(First In First Out)在高速数据传输期间可临时存储数据以免数据丢失。采用自上而下的设计方法,使用Cadence工具进行合成与仿真。测试结果表明,该电路满足设计要求,仿真波形验证了数据收发的完整性。

A design scheme for low power supply voltage multi-channel UART is proposed to meet the need of multi-point communication, low power consumption, high speed and low error rate in the complex control occasions. Each channel is independently controlled, and the FIFO configured at the transmitter and receiver can temporarily store data during high-speed data transmission to avoid data loss. The circuit utilizes top-down design method and uses Cadence tool for synthesis and simulation. The test results show that the circuit meets the design requirements, and the simulation waveforms verify the integrity of data transceiver.