10G LAN/network/Ethernet transformer

In the era of big data, the amount of data processing has increased by hundreds of millions, which means that the network transformer, as the basic component of data transmission, not only needs to meet the most basic transmission performance, but its transmission rate needs to be greatly improved. The 10G speed chip solution requires the stability of its products from the core components. A variety of 10 Gigabit Ethernet network transformers such as 2.5G 5G 10G can meet the requirements of various high-speed 10 Gigabit switches and other core network machine boards. need.

　　 The IEEE organization launched the 802.3an protocol as early as 2006, which is what we usually call 10G Base-T. As an upgraded version of 1000M Base-T, this protocol follows some important definitions and settings of 1000M Base-T, and is backward compatible with 1000M/100M/10M Base-T.

　　10G Base-T still uses the RJ45 network interface, and the transmission twisted pair adopts Category 6 wire, and supports the transmission distance of up to 100 meters. It is the best choice for LAN and personal computer network interfaces. Four differential pairs are still used for simultaneous transmission, full duplex, but the total transmission rate is up to 10Gbps, and the rate of each pair of lines is up to 2.5Gbps.

10G Base-T network transformer adopts PAM16 modulation, which is higher-end than the PAM5 modulation of 1000M Base-T network transformer. PAM is pulse amplitude modulation. Under PAM16 modulation, the pulse voltage amplitude is divided into 16 levels, so that each voltage amplitude (called "Symbol") can represent 4 bits of information, of which 3.125 bits are valid data, and the other 0.875 bits are used for auxiliary and check etc. Of course, the 3.125 and 0.875 are both averaged values. After using PAM-16 encoding, the data transmission rate of each pair of transmission lines of the 10G Base-T network transformer is 800M Symbols/s. In this way, this protocol conjures a super-high-speed bus of a 10G network transformer into a low-speed bus of only 800M, making 100M long-distance transmission a reality and making signal integrity verification simple.

The power of the 10G Base-T network transformer is obvious. The commonly used RJ45 interface, the commonly used Category 6 transmission line, the same 100M transmission distance, the rate can reach 10 times that of the 1000M Base-T network transformer! Compared with the optical fiber, it has a lower cost.