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US 2025/0052813 A1Published application
Boundary scan for shared analog and digital pins
AssigneeTexas Instruments Incorporated
InventorsPrasanth Viswanathan Pillai, Swathi Gangasani, Vaskar Sarkar
Life of this patent
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Abstract
An example apparatus includes a buffer configured to, when enabled: obtain an input voltage; and provide the input voltage to a first boundary cell; and a second boundary cell configured to, when the apparatus is used in analog mode and a boundary scan occurs disable the buffer.
Claims20
A device comprising:
- a shared pad;
- a first buffer including an input coupled to the shared pad, wherein the first buffer includes an output;
- a first boundary cell coupled to the output of the first buffer;
- a circuit;
- a first logic gate including an input coupled to the circuit;
- and
- a second boundary cell coupled to the first buffer and coupled to the first logic gate.
4 more elements
A device comprising:
- an analog domain;
- a shared pad coupled to the analog domain;
- and
- a digital domain coupled to the shared pad, wherein the digital domain includes:
- a first buffer including a first input coupled to the shared pad, wherein the first buffer includes an enable input;
- a circuit;
- and
- a first boundary cell coupled to the circuit and coupled to the enable input of the first buffer.
5 more elements
A device comprising:
- an analog domain;
- a shared pad coupled to the analog domain;
- and
- a digital domain coupled to the shared pad, wherein the digital domain includes:
- a first buffer including a first input coupled to the shared pad, wherein the first buffer includes an enable input, a pull input, and an output;
- a circuit;
- a first logic gate coupled to the circuit and coupled to the pull input of the first buffer;
- a first boundary cell coupled to the circuit and the enable input of the first buffer;
- a second boundary cell coupled to the circuit;
- and
- a second buffer including:
- a first input;
- an enable input coupled to the second boundary cell;
- and
- an output coupled to the shared pad.
12 more elements
Dependencies are inferred from the claim text.