Testing and emulation of integrated circuits

Details Testing and emulation of integrated circuits Testing and emulation of integrated circuits

1992-07-22

1994-07-19

Black, Thomas G.

Boots, shoes, and leggings

364578, 324 731, 365201, 307465, 371 221, G06G 748, G06F 1500

Patent

active

053315715

ABSTRACT:
An architecture is provided for testing and emulating an integrated circuit with embedded function blocks. The output nodes of the function blocks are connected through a tri-state buffer to a test bus which in turn is connected to configurable external pins. The external pins multiplex the normal I/O in normal mode and the test bus I/O in the test mode. The test bus is also connected through multiplexers to input nodes of function blocks. In test mode, the function block nodes are accessed through the test bus. For emulation of an embedded microcontroller or microprocessor, the internal connections of the microcontroller (or microprocessor) are brought out to those external pins which in normal operation are connected only to the microcontroller and not to any other function block. An in-circuit emulator (ICE) emulating the microcontroller is connected to the other function blocks through those external pins.

REFERENCES:
patent: 4621339 (1986-11-01), Wagner et al.
patent: 4695968 (1987-09-01), Sullivan, II et al.
patent: 4896296 (1990-01-01), Turner et al.
patent: 5032783 (1991-07-01), Hwang et al.
patent: 5072138 (1991-12-01), Slemmer et al.
patent: 5113352 (1992-05-01), Finnerty
patent: 5134586 (1992-07-01), Steele
patent: 5161159 (1992-11-01), McClure et al.

Affiliated with

Also associated with

Rating

Testing and emulation of integrated circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Testing and emulation of integrated circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing and emulation of integrated circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-525359