A kind of signal transmission method and device

Abstract

The application provides a signal transmission method and device. The signal receiving method includes: a serial port signal received by a programmable logic device of a main control board through an RRPP channel connected to a backplane and output through a serial port connector of the main control board; the RRPP channel Enable to receive the serial port signal; the programmable logic device receives the designated preamble to receive the lost Rlos signal through the RRPP channel, disables the reception of the serial port signal through the RRPP channel, and starts to receive the Rlos signal; the programmable logic device judges the received Rlos signal Whether the last bit is a stop bit; if so, the programmable logic device determines that the reception of the Rlos signal is completed, and enables the serial port signal to be received through the RRPP channel.

Description

technical field [0001] The present application relates to communication technology, in particular to a signal transmission method and device. Background technique [0002] In the frame type communication device, the main control board, each line card board and network board each have an independent debugging serial port. However, in the frame type communication equipment architecture, the serial port connector of the main control board is directly connected to the external physical debugging equipment, but the debugging serial port of the line card board and network board is arranged in a deep position on each board and cannot be directly connected to the external physical debugging equipment. Physical debugging equipment. [0003] In software debugging or environmental testing, when the CPU program of the line card board or network board fails, it is necessary to connect the board debugging serial connector of the line card board or network board to the printer through the...

AI Technical Summary

Problems solved by technology

However, the boards of the frame-type communication equipment are closely arranged. When connecting the serial port cable to the debugging serial port connector of the line card board or the network board, the board on the adjacent upper layer must be unplugged, which will destroy the problem environment.

[0004] However, the internal structure layout of each single board and the inter-board structural layout of each single board of the frame-type communication equipment are complex overall designs. Therefore, it is necessary to provide a method to debug the physical position of the serial port connector in the board without modifying the line card board or the network board, and obtain the line The serial port signal of the debugging test of the card board or the network board

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