Serial port server, protocol conversion chip and data transmission method

Abstract

The invention discloses a serial port server, a protocol conversion chip and a data transmission method, which are used for achieving the serial port server with a function for transforming media independent interface (MII) data and serial port data. The serial port server comprises at least one first protocol conversion chip. The first protocol conversion chip comprises an MII and a plurality of serial ports, is connected with a central processing unit (CPU) through the MII, and is used for receiving an Ethernet message from the CPU, analyzing out a media access control (MAC) address, determining the serial port corresponding to the MAC address, sending data in the Ethernet message from the serial port port, packaging the data received from the serial port into the Ethernet message, carrying the MAC address corresponding to the serial port port, and then sending the Ethernet message to the CPU. The CPU receives the Ethernet message from an exchange chip, sends the Ethernet message to the first protocol conversion chip, and sends the Ethernet message received from the first protocol conversion chip to the exchange chip.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a serial port server, a co-transfer chip and a data transmission method. Background technique [0002] The serial port server is a commonly used protocol conversion device in the industry. The serial port device can transmit the serial port data to the remote host or other Ethernet interface devices through the serial port server through the serial port server. Similarly, the remote Ethernet interface device can The server converts the Ethernet service into a serial port service and transmits it to the serial port device, thereby realizing data mutual transmission between the serial port device and the Ethernet interface device. [0003] Most serial servers on the market currently have only one Ethernet port and multiple serial ports, which can only realize the mutual conversion between Ethernet data and serial port data, and can only establish data communication with the same h...

AI Technical Summary

Problems solved by technology

More importantly, in the industrial environment and telecommunication environment, not only Ethernet is required to transmit serial data services, but also other communication methods may be required, such as transmission through E1, then another set of Ethernet to E1 protocol needs to be added. This not only increases the cost, but also puts pressure on construction and maintenance

[0004] And, the serial port server in the prior art does not have the conversion function of Media Independent Interface (Media Independent Interface, MII) data and serial port data

Images