Data transmission device and data transmission method with self-adapting link

Abstract

The invention discloses a data transmission device and a data transmission method with a self-adapting link. At a sending end, high-speed data to be sent is divided into data units according to a fixed length, cycle count is carried out on the data units, count values of the data units are taken as frame headers which constitute data frames with the current data units, and each data frame selects an appropriate high-speed serial link for transmission; at a receiving end, after each high-speed serial link completes data serial-parallel conversion by a respective deserializer, a de-framer is used for de-framing the data frames, the data units are written into a data FIFO (First In First Out) of the corresponding link, the frame headers are written into a frame header FIFO of the corresponding link, a receiving logic judges the frame header FIFO value of each high-speed serial link at regular time, an appropriate data FIFO is selected according to the cycle increasing sequence of the count values, one corresponding data unit is read, and data combination is thus realized. The connecting mode of the serial link is flexible, and the physical line length is not constrained.

Description

technical field [0001] The invention relates to a link adaptive data transmission device and a data transmission method using the data transmission device for data transmission. Background technique [0002] With the development of serializer and deserializer technology, high-speed serial bus is gradually replacing the traditional parallel bus, becoming a popular high-speed interface technology. In many high-speed serial communication systems, in order to increase the data communication rate, it is often necessary to transmit data through multiple high-speed serial links. [0003] The existing method of data transmission through multiple high-speed serial links is as follows: at the sending end, the high-speed data with high bit width is split at a bit at the same speed to obtain multiple parallel data with low bit width, and then encoded and processed by a serializer. Parallel-to-serial conversion, and finally transmitted to the physical media channels of multiple high-spe...

AI Technical Summary

Problems solved by technology

When there are a large number of high-speed serial links, especially when optical fiber and copper cables are used as physical transmission media, continuous sequence errors are prone to occur, resulting in inconsistencies between the order of received data and the order of sent data streams, resulting in transmission errors

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