GM3101 是专用于倒车雷达的超声波测距芯片，该芯片提供4 路超声波探头的驱动，并根据超声波特性和倒车雷达的使用环境进行了一系列智能化处理，在保证超声波测距精确性的基础上，更加强了报警功能的准确性和实用性。测试结果编码后采用双线差分方式输出，提高了信号传输的抗干扰性。GM3101 可为倒车雷达系统提供最简单的单芯片控制方案，替代现有的单片机控制方案。该芯片的优势在于尽可能地为倒车雷达系统提高集成度，减少外围元件。同时该芯片的功能满足高端和通用性的要求，用户利用该组芯片既可以生产高性能的整机产品，还可以灵活设置其产品的报警方式。全硬件方式实现系统功能，既降低了用户的开发难度，更对系统性能有了显著的提高。-GM3101 is dedicated to ultrasonic chip reversing radar, the chip provides 4 channels ultrasonic transducer drive, and conducted a series of intelligent processing according to the ultrasonic characteristics and reversing radar application environment, in ensuring the basis of ultrasonic ranging accuracy, more accuracy and practicability of the alarm function. The test results after coding adopts double differential output, improve the anti-interference of signal transmission. GM3101 provides a single chip control simple scheme for reversing radar system, replace the existing control scheme. The chip has the advantage of as much as possible for reversing radar systems to improve integration, reducing external components. At the same time the chip function satisfies the high-end and general requirements, the product using this chip users not only can produce high performance, but also can flexibly set the alarm products. The hardware to realize the function of the system, not only reduce