SG-210STF crystal oscillator is used for Intel servers, with a 2520 small package and a maximum accuracy requirement of 25ppm

Nov 27,2024
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With the advent of the Internet of Things era, network access has increased dramatically, and the demand for computing power has become increasingly high. As the main device for carrying computing, servers play an important role in enterprise IT rooms, data centers, base stations, telecommunications rooms, and other places. Currently, most servers are based on X86 architecture and mostly use Intel's chipset platform

The main equipment of a server is the server motherboard, which consists of various devices such as CPU, PCH, BMC, memory, and various PCIE expansion slots. However, the clock system is still an important design part of the server. Generally speaking, the clock part of the server is mainly divided into two parts. One is the high-speed clock provided for CPU, PCIe, PCH and other devices, which needs to meet specific indicators. For example, the latest Eagle Stream platform requires the use of CK440 standard clock generators to provide up to 4 100M high-speed clocks for the CPU, and up to 20 PCIe clock buffers that meet DB2001 indicators. The latest requirement is to meet PCIe Gen5. The other is some low-speed clocks, which provide clock sources generally within 50M for BMC, PCH, CPLD, PHY and other devices. Among them, the commonly used 50M clock sources for BMC/BMC/PHY and other devices use crystal oscillators as clock sources.

Like other devices, the internal design of Intel servers requires consideration of spatial wiring and heat dissipation design. Therefore, miniaturized and low-power crystal oscillators are the trend in later clock source design. Here, we recommend using EPSON's SG-210STF as the clock source for these crystal oscillators. Characteristics of using SG-210STF:

1.Firstly, there is encapsulation. The packaging of SG-210STF is 2520, which meets the current mainstream requirements for small-sized crystal oscillators and opens up vast space for the miniaturization and high-density integration design of servers.

2. Secondly, frequency offset stability. For Intel servers, processing complex data operations and ensuring accurate and error free transmission and storage of information, clock signal accuracy is the key "lifeline". SG-210STF can meet the accuracy requirement of 50 ppm at -40~85 °, and 25 ppm at -20~70 °. Usually, servers work in dedicated computer rooms and are equipped with air conditioning equipment, so better frequency offset accuracy can be achieved.

3. Power consumption: The typical crystal oscillator requirement for servers is 50MHz and below, and the power consumption can be maintained within 2.7 mA, which is within the preset range.

4. Work in fundamental frequency mode. SG-210STF operates in fundamental frequency mode instead of overtone crystal oscillator, making it more stable.

In addition, the short startup time and other characteristics of SG-210STF help CPLD to start power management function in real time, which helps to reduce system startup time.