Full duplex bus and train

Abstract

The invention provides a full duplex bus and a train, a master node and a slave node of the full duplex bus both comprise an M-LVDS driver and an M-LVDS receiver, and data signal transmission is carried out between the M-LVDS driver of the master node and the M-LVDS receiver of the slave node through a first differential pair circuit. Data signal transmission is carried out between the M-LVDS driver of the slave node and the M-LVDS receiver of the master node through a second differential pair circuit, and a full duplex data bus system based on M-LVDS is formed. Compared with other types of buses, the master node and the slave node need fewer signals, so that IO consumption is reduced, and the cost is further reduced. And the serial data effective signal and the serial data signal are matched for use, and the data receiver determines whether the serial data signal is sent or not by utilizing the serial data effective signal, so that the coding overhead defined by the boundary of the data frame is reduced, and the data recovery logic is simplified.

Description

technical field [0001] The invention relates to the field of bus technology, more specifically, to a full-duplex bus and a train. Background technique [0002] The bus is a public communication trunk line for transmitting information between various functional components of a computer, and it is a transmission harness composed of wires. In the current backplane bus, point-to-point high-speed serial signal forms, such as PECL, CML, LVDS, etc., are usually used for high-speed data transmission. However, these point-to-point high-speed serial signal forms consume a large number of IOs, and the cost is high. high. Contents of the invention [0003] In view of this, the present invention proposes a full-duplex bus and train to reduce costs. [0004] In order to achieve the above purpose, the proposed scheme is as follows: [0005] In the first aspect, a full-duplex bus is provided, including: a master node, a slave node, a first differential pair circuit, a second differenti...

AI Technical Summary

Problems solved by technology

In the current backplane bus, point-to-point high-speed serial signal forms, such as PECL, CML, LVDS, etc., are usually used for high-speed data transmission. However, these point-to-point high-speed serial signal forms consume a large number of IOs, and the cost is high. high

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