What is the important role of crystal oscillators in switching modules?
晶振在交换模块的重要作用是什么？

The switch hardware part is mainly composed of Ethernet switching module, CPU control module, PHY chip, interface module, power supply module, etc. The switching module is the decisive factor affecting data storage, forwarding and exchange, and the high-performance data exchange function is mainly completed by the switching chip.

交换机硬件部分主要由以太网交换模块、CPU控制模块、PHY芯片、接口模块、电源模块等组成 。交换模块是影响数据存储、转发及交换的决定性因素，高性能的数据交换功能主要由交换芯片完成。

At present, mainstream switching chips can meet the high-rate exchange of large-capacity data, but at the same time, its software functions and hardware structure have become more and more complex, which also puts forward higher requirements for the clock system that affects the stability of the system, such as: high stability, high precision, low jitter, low phase noise, etc.

目前，主流交换芯片可以满足大容量数据的高速率交换，但与此同时，其软件功能和硬件结构开始变得越来越复杂，这对影响系统稳定性的时钟系统也提出了更高要求，如：高稳定性、高精度、低抖动、低相噪等。

In order to ensure the long-term stability of Ethernet switches, most of them choose high-precision and high-stability active crystal oscillator (Oscillator) series products.

为了保证以太网交换机工作的长期稳定性，大多都选用高精度高稳定性的有源晶体振荡器(Oscillator)系列产品。

Common crystal oscillator frequency points of switching modules:
交换模块常用晶振频点：

10MHz、25MHz、25.000625MHz、40MHz、96MHz、100MHz、125.003125MHz、156.25MHz、156.250625MHz等。