LSI system having a test facilitating circuit

Details LSI system having a test facilitating circuit LSI system having a test facilitating circuit

1990-11-20

1992-10-27

Nguyen, Vinh

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 731, 371 151, 371 225, G01R 3106

Patent

active

051592630

ABSTRACT:
Disclosed is a test facilitating circuit which is incorporated in an LSI system having a plurality of master modules and a plurality of slave modules, a common bus for connecting the master modules and the slave modules, and a bus arbiter for adjusting use of the common bus. The test circuit utilizes tri-state buffers and control lines for prohibiting transmission of an acknowledgement signal from the bus arbiter to a master module to be tested among the plurality of master modules in a test mode. The test circuit inputs an acknowledgement signal generated from the master module, and which outputs it to the slave modules. An AND gate is used for masking acknowledgement signals to be transmitted from the bus arbiter to master modules other than the master module to be tested. A test I/O bus is used (comprising control lines and data lines) for carrying out initial setting to a memory portion in the master module to be tested, and reading data stored in the memory portion; and an ordinary operation control line sets the master module and the slave modules into an ordinary operation mode.

REFERENCES:
patent: 4181940 (1980-01-01), Underwood et al.
patent: 4371754 (1983-02-01), De et al.
patent: 4707833 (1987-11-01), Tamaru
patent: 4802163 (1989-01-01), Hirabayashi
patent: 4821269 (1989-04-01), Jackson et al.
patent: 4970454 (1990-11-01), Stambaugh et al.
patent: 5036272 (1991-07-01), Cho et al.

Affiliated with

Also associated with

Rating

LSI system having a test facilitating circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LSI system having a test facilitating circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LSI system having a test facilitating circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-907807