Digital E1 hardware interface cascade configurable implementation device and method

Abstract

The invention discloses a digital E1 hardware interface cascade configurable implementation device and method. The device comprises two hardware circuit board cards, a board card I comprises a to-be-tested module access unit and a communication link distribution unit, a board card II is a main control unit and an external communication adapter interface, and a connector of the board card I and a connector of the board card II are interconnected; the to-be-tested module access unit provides a power supply and an excitation signal required by work for a to-be-tested module, and leads out a to-be-tested signal of the to-be-tested module; the communication link distribution unit realizes path selection through a plurality of analog switch chipsets; variable cascade loop distribution in eight channels is completed in the communication link distribution unit; the main control unit takes an FPGA (Field Programmable Gate Array) or an MCU (Microprogrammed Control Unit) as a main processor and comprises an external input part, an external display part and an analog switch channel distribution part. The error probability is reduced, and the production test efficiency is improved; by operating the main control unit, the multi-module and multi-cascade test mode requirements can be quickly realized.

Description

technical field [0001] The invention belongs to the field of hardware circuit design, specifically the physical interface of digital E1 and E2, relates to a method for multi-cascading verification of communication interfaces, and the number of cascading layers can be configured, and provides a digital E1 hardware interface cascading configurable method Implementation device and method. Background technique [0002] In the field of voice communication and data communication, the digital E1 interface is widely used as a classic communication method, and on this basis, a higher rate is combined to realize the secondary group such as E2. In my country, the rate of E1 is 2.048Mbps, E2 is 8.448Mbps. When we use these data interfaces for communication interconnection, under certain specific architectures, due to the functional division of data processing, there are application requirements such as multiple E1 board modules for cascading processing or multi-layer relays in the organ...

AI Technical Summary

Problems solved by technology

If it is necessary to test different forms of links at the same time, or to switch between different layers of cascade tests, cables and boards need to be added to each layer of cascade, which makes the on-site test environment messy and brings test uncertainty. The original simple module signal Performance testing will be dragged down by the instability of the test environment

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