A single-level single-wire full-duplex bus communication method and system

Abstract

The present invention discloses a single-level single-wire full-duplex bus communication method and system. The method includes: the signal transceiver terminal A1 sends data according to the internal transmission clock F1, monitors the level change on the bus at the same time, and analyzes the received data; the signal transceiver The terminal B1 sends data according to the internal transmission clock F2, and monitors the level change on the bus at the same time, and analyzes the received data; the signal transceiver terminal A1 and the signal transceiver terminal B1 realize communication through a single line; the transmission clock F1>F2*(data unit length +2). The system realizes single-level single-wire full-duplex communication by using different encoding formats and different internal transmission clocks, which not only reduces the number of signal lines, but also uses 0,1 universal digital levels to achieve single-level communication , reducing the difficulty of hardware implementation.

Description

technical field [0001] The invention relates to the field of server boards, in particular to a single-level single-wire full-duplex bus communication method and system. Background technique [0002] In the field of servers, in order to increase the interactivity and adaptability between boards, additional signals are often added between boards to ensure effective communication and mutual identification between boards. The interconnection between boards is mostly connected by cables. The more signals that the boards interact with, the more cables are used, and the printed circuit board (PCB) area occupied by the connectors is also The corresponding increase will result in an increase in hardware cost; at the same time, the increase in the number of connection points of the connector will also reduce the reliability of signal transmission. [0003] In order to reduce the number of signals between each board, the measures of serial-to-parallel conversion are generally adopted ...

AI Technical Summary

Problems solved by technology

Taking the existing single-wire UART as an example, its working level is 0 and 1, which is a single power supply, but it works in half-duplex mode, which cannot guarantee the real-time interaction between boards and cards.

However, the existing single-wire full-duplex bus adopts the multi-level mode (-1, 0, 1). Judging the received data, the disadvantage is that the hardware scheme is complicated, and it is difficult to realize for digital circuits

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