Devices, systems and methods for mode driven stops
AssigneeTexas Instruments Incorporated
InventorsGary L. Swoboda, Martin D. Daniels
Life of this patent
Estimating the term…
Abstract
A data processing device formed in a single semiconductor chip. The data processing device includes an electronic processor, and on-chip peripheral circuitry ordinarily operative together. Further included, are means for selectively entering externally supplied data into the electronic processor and on-chip peripheral circuitry, for starting and stopping operations of the electronic processor and the on-chip peripheral circuitry independently of each other in an emulation mode of operation.
Claims22
A data processing device formed in a single semiconductor chip comprising:
- an electronic processor, and on-chip peripheral circuitry ordinarily operative together;
- and
- means for selectively entering externally supplied data into the electronic processor and on-chip peripheral circuitry and starting and stopping operations of the electronic processor and the on-chip peripheral circuitry independently of each other in an emulation mode of operation.
A testable logic circuit comprising:
- a plurality of domains each having a defined test boundary, each of said domains having internal logic modules with a plurality of control/observation locations;
- a mode register connected to the domains, the domains including stop circuit means each connected to the mode register for executing different stops selectively determined by the contents of said mode register;
- a shift register latch disposed at each of said control/observation locations;
- and
- a serial data link associated with each of said domains and with said mode register for connecting the shift register latches in a serial chain having a test input for supplying test signals thereto and a test output for obtaining test results therefrom, the test signals thereby defining the selected stop to be executed.
A development system comprising:
- a programmable computer operative to provide control signals and data signals;
- and
- apparatus including a data processing device having formed in a single semiconductor chip an electronic processor and on-chip peripheral circuitry ordinarily operative together and circuit means on-chip for selectively entering data into the electronic processor and said on-chip peripheral circuitry and starting and stopping operations of the electronic processor and the on-chip peripheral circuitry independently of each other in an emulation mode of operations in response to the control signals and data signals provided by said programmable computer.
A method of development of a data processing device having an electronic processor and on-chip peripheral circuitry formed on a same semiconductor chip comprising the steps of:
- selectively entering data into the electronic processor and on-chip peripheral circuitry;
- and
- starting and stopping operations of the electronic processor and the on-chip peripheral circuitry independently of each other in an emulation mode of operation.
Dependencies are inferred from the claim text.