Combined test action group test system of micro-electric communication processing structure

Abstract

The invention discloses a joint test action group (JTAG) test system of a micro-telecommunication computing architecture, which comprises an external test unit, and main carrier hubs (MCH) and an advanced mezzanine card (AMC) of a micro-telecommunication computing architecture, wherein the external test unit is connected with the JTAG interfaces of the MCH and the AMC in a bus manner to serve as a main device master for testing the MCH and the AMC; the MCH serves as a master for testing the AMC or as a slave to be tested by the external test unit; and the AMC services as a slave to be tested by the current master. The invention can achieve connection between the selected master and the set slave and achieve slave test step by step without achieving JTAG switch module (JSM).

Description

A Joint Test Action Group Test System for Microtelecom Processing Architecture technical field The present invention relates to joint test action group (JTAG, JOINTTESTACTIONGROUP) test technology, particularly relates to a kind of JTAG test system of microtelecommunication processing framework (MicroTCA, MicroTelecommunicationComputingArchitecture). Background technique The JTAG protocol is an international standard test protocol, mainly used for chip internal testing. The PCI Industrial Computer Manufacturers Group (PICMG, PCIIndustrialComputerManufacturersGroup) has developed a set of MicroTCA specifications, the purpose of which is to allow advanced daughter cards (AMC, AdvancedMezzanineCard) to be directly inserted into the backplane. Due to its small size, good scalability and flexibility, and cost factors, MicroTCA is suitable for use in wireless base station side equipment. Test is a more important part of MicroTCA, and the test of MicroTCA can be realized with J...

AI Technical Summary

Problems solved by technology

Then, if JSM is implemented on the backplane, the complexity of the backplane will be increased, and a placement process will be added during processing.

If an additional single board is used to implement JSM, it will inevitably increase the manufacturing cost of MicroTCA's JTAG test system

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