Patent ID: 11965930
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. The electrical device of claim 1, wherein the test access port comprises:
controller circuitry including inputs connected to the test clock input and the test mode select input, wherein the controller circuitry further includes control outputs;
an instruction register including a data input connected to the test data in input, a data output coupled to the test data out output, and control inputs connected to the control outputs of the controller circuitry;
a data register including a data input connected to the test data in input, a data output coupled to the test data out output, and control inputs coupled to the control outputs of the controller circuitry; and
multiplexer circuitry including a control input connected to the control outputs of the controller circuitry, data inputs coupled to the data outputs of the instruction register and the data register, and an output connected to the test data out output.