针对光收发模块的微控制器(MCU)片上资源紧张问题,通过对GD32E232定时器PWM模式进行研究,提出将PWM的特殊应用模式即单脉冲工作模式应用在光收发模块接收信号强度指示的触发信号处理电路上,用来替代传统的以可配置逻辑单元组成电路的方法。本文详细给出了GD32E232定时器单脉冲工作模式的配置代码,验证结果表明,输入不同宽度的触发信号都可以得到所需要的固定宽度的输出信号。

Aiming at the shortage of resources on microcontroller of optical transceiver module,through the study of PWM mode of GD32E232 timer,the special application mode of PWM,namely single pulse mode,is proposed to be applied to the trigger signal processing circuit of optical transceiver module receiving signal strength indication,which is used to replace the traditional method of configurable logic units circuit.The configuration code of GD32E232 timer's single pulse mode is given in detail.By verifying the input trigger signal of different width,the output signal of fixed width can be obtained.