公开(公告)号：US11663111B2

公开(公告)日：2023-05-30

申请号：US17138684

申请日：2020-12-30

Applicant: Texas Instruments Incorporated

Inventor： Venkateswar Reddy Kowkutla ,  Rejitha Nair

IPC: G06F11/36 ,  G01R31/317

CPC classification number: G06F11/3648 ,  G01R31/31724 ,  G06F11/3672

Abstract: An integrated circuit includes a processor core configured to perform boot operations; and a microcontroller coupled to a processor core. The microcontroller includes: a set of microcontroller components; and a state machine coupled to the set of microcontroller components. The state machine is configured to perform self-test operations on the set of microcontroller components before the boot operations.

公开(公告)号：US20250015698A1

公开(公告)日：2025-01-09

申请号：US18897219

申请日：2024-09-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Venkateswar Kowkutla ,  Kazunobu Shin ,  Venkateswara Pothireddy ,  Siva Kothamasu ,  John Apostol ,  Raghavendra Santhanagopal ,  Rajagopal Kollengode Ananthanarayanan ,  Rejitha Nair ,  Charles Gerlach ,  Ravi Teja Reddy

IPC: H02M1/00 ,  H02M3/04

Abstract: In described examples, an integrated circuit (IC) includes an isolation, an input/output (IO), and a low power mode (LPM) control logic. The isolation includes a level shift with pull-down configured to weakly pull down the voltage of signals that travel through the isolation. The IO includes an input and a physical connector for coupling to a power management IC. The IO provides an asserted-low LPM enable signal to the physical connector in response to the IO input. An output of the LPM control logic is coupled via the isolation to the input of the IO. The LPM control logic provides a high voltage signal to the input of the IO as a default during power on reset (POR) of the IC. The pull-down pulls the LPM enable signal voltage to the asserted low voltage in response to a voltage of the LPM enable signal falling below a threshold.

公开(公告)号：US12158836B2

公开(公告)日：2024-12-03

申请号：US18305873

申请日：2023-04-24

Applicant: Texas Instruments Incorporated

Inventor： Venkateswar Reddy Kowkutla ,  Rejitha Nair

IPC: G06F11/36 ,  G01R31/317

Abstract: An integrated circuit includes a processor core configured to perform boot operations; and a microcontroller coupled to a processor core. The microcontroller includes: a set of microcontroller components; and a state machine coupled to the set of microcontroller components. The state machine is configured to perform self-test operations on the set of microcontroller components before the boot operations.

公开(公告)号：US11899563B2

公开(公告)日：2024-02-13

申请号：US17686348

申请日：2022-03-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Venkateswar Kowkutla ,  Raghavendra Santhanagopal ,  Chunhua Hu ,  Anthony Frederick Seely ,  Nishanth Menon ,  Rajesh Kumar Vanga ,  Rejitha Nair ,  Siva Srinivas Kothamasu ,  Kazunobu Shin ,  Jason Peck ,  John Apostol

IPC: G06F13/10 ,  G06F11/36 ,  G06F9/4401 ,  G06F11/30

CPC classification number: G06F11/3656 ,  G06F9/4401 ,  G06F11/3048 ,  G06F13/102 ,  G06F2201/86 ,  G06F2213/0038

Abstract: A system on a chip (SoC) includes a first domain comprising a first processor configured to boot the SoC, and a first debug subsystem, a second domain comprising a second processor, the second domain configurable as either a safety domain or a general-purpose processing domain, and isolation circuitry between the first domain and the second domain. During boot-up of the SoC, the first processor provides code to the second domain which, when executed by the second processor, configures the second domain as either a safety domain or as a general-purpose processing domain.

公开(公告)号：US12072731B2

公开(公告)日：2024-08-27

申请号：US18317190

申请日：2023-05-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Varun Singh ,  Rejitha Nair ,  John Chrysostom Apostol ,  Venkateswar Reddy Kowkutla ,  Santhanagopal Raghavendra

IPC: G06F1/12 ,  G06F1/08 ,  G06F1/10 ,  H03K21/08 ,  H03K19/20

CPC classification number: G06F1/12 ,  G06F1/08 ,  G06F1/10 ,  H03K21/08 ,  H03K19/20

Abstract: An electronic device comprising one or more subcircuits configured to receive a clock signal, the clock signal configured to switch from a reference clock signal to a second clock signal based on a clock bypass signal, a timer configured to receive the reference clock signal and output an alignment signal based on the reference clock signal, wherein a frequency of the alignment signal is determined based on clock frequencies of the one or more subcircuits; a clock alignment module coupled to the timer and the one or more subcircuits and configured to receive the clock bypass signal, determine that the clock bypass signal has changed to switch the one or more subcircuits to the reference clock signal from the second clock signal, block the clock signal from being received by the one or more subcircuits, receive the alignment signal, and unblock the clock signal based on the alignment signal.

公开(公告)号：US20230205305A1

公开(公告)日：2023-06-29

申请号：US18060114

申请日：2022-11-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Venkateswar Kowkutla ,  Chunhua Hu ,  Raghavendra Santhanagopal ,  Kazunobu Shin ,  Charles Gerlach ,  Rejitha Nair ,  Ritesh Sojitra ,  Sai Rajaraman ,  Anthony Seely ,  Siva Srinivas Kothamasu ,  Varun Singh ,  John Apostol

IPC: G06F1/3287 ,  G06F13/16 ,  G06F13/40 ,  G06F13/42

CPC classification number: G06F1/3287 ,  G06F13/1668 ,  G06F13/4068 ,  G06F13/423

Abstract: A circuit device is provided and includes a first power domain comprising a universal serial bus (USB) subsystem and/or a memory controller subsystem. The first power domain is configured to isolate the USB subsystem and/or the memory controller subsystem from a power-on-reset signal asserted during a low power mode.

公开(公告)号：US11662763B1

公开(公告)日：2023-05-30

申请号：US17537150

申请日：2021-11-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Varun Singh ,  Rejitha Nair ,  John Chrysostom Apostol ,  Venkateswar Reddy Kowkutla ,  Raghavendra Santhanagopal

IPC: G06F1/12 ,  H03K21/08 ,  G06F1/08 ,  G06F1/10 ,  H03K19/20

CPC classification number: G06F1/12 ,  G06F1/08 ,  G06F1/10 ,  H03K21/08 ,  H03K19/20

Abstract: An electronic device comprising one or more subcircuits configured to receive a clock signal, the clock signal configured to switch from a reference clock signal to a second clock signal based on a clock bypass signal, a timer configured to receive the reference clock signal and output an alignment signal based on the reference clock signal, wherein a frequency of the alignment signal is determined based on clock frequencies of the one or more subcircuits; a clock alignment module coupled to the timer and the one or more subcircuits and configured to receive the clock bypass signal, determine that the clock bypass signal has changed to switch the one or more subcircuits to the reference clock signal from the second clock signal, block the clock signal from being received by the one or more subcircuits, receive the alignment signal, and unblock the clock signal based on the alignment signal.

公开(公告)号：US12217102B2

公开(公告)日：2025-02-04

申请号：US17551011

申请日：2021-12-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Devanathan Varadarajan ,  Varun Singh ,  Jose Luis Flores ,  Rejitha Nair ,  David Matthew Thompson

IPC: G06F9/50 ,  G06F11/30 ,  G06F11/32

Abstract: An integrated circuit comprises a set of processor cores, wherein each processor core of the set of processor cores includes BIST logic circuitry and multiple memory blocks coupled to the BIST logic circuitry. Each processor core further includes multiple power control circuitry, where each power control circuitry of the multiple power control circuitry is coupled to a respective processor core of the set of processor cores, multiple isolation circuitry, where each isolation circuitry of the multiple isolation circuitry is coupled to a respective processor core of the set of processor cores, a built-in-self repair (BISR) controller coupled to the each of the set of processor cores, each of the multiple power control circuitry, and each of the multiple isolation circuitry, and a safety controller coupled to the BISR controller, the multiple power control circuitry, and to the multiple isolation circuitry.

公开(公告)号：US12132386B2

公开(公告)日：2024-10-29

申请号：US18160308

申请日：2023-01-27

Applicant: Texas Instruments Incorporated

Inventor： Venkateswar Kowkutla ,  Kazunobu Shin ,  Venkateswara Pothireddy ,  Siva Kothamasu ,  John Apostol ,  Raghavendra Santhanagopal ,  Rajagopal Kollengode Ananthanarayanan ,  Rejitha Nair ,  Charles Gerlach ,  Ravi Teja Reddy

IPC: H02M3/04 ,  H02M1/00

CPC classification number: H02M1/0032 ,  H02M3/04

Abstract: In described examples, an integrated circuit (IC) includes an isolation, an input/output (IO), and a low power mode (LPM) control logic. The isolation includes a level shift with pull-down configured to weakly pull down the voltage of signals that travel through the isolation. The IO includes an input and a physical connector for coupling to a power management IC. The IO provides an asserted-low LPM enable signal to the physical connector in response to the IO input. An output of the LPM control logic is coupled via the isolation to the input of the IO. The LPM control logic provides a high voltage signal to the input of the IO as a default during power on reset (POR) of the IC. The pull-down pulls the LPM enable signal voltage to the asserted low voltage in response to a voltage of the LPM enable signal falling below a threshold.

公开(公告)号：US20240134776A1

公开(公告)日：2024-04-25

申请号：US18403293

申请日：2024-01-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Venkateswar Kowkutla ,  Raghavendra Santhanagopal ,  Chunhua Hu ,  Anthony Frederick Seely ,  Nishanth Menon ,  Rajesh Kumar Vanga ,  Rejitha Nair ,  Siva Srinivas Kothamasu ,  Kazunobu Shin ,  Jason Peck ,  John Apostol

IPC: G06F11/36 ,  G06F9/4401 ,  G06F11/30 ,  G06F13/10

CPC classification number: G06F11/3656 ,  G06F9/4401 ,  G06F11/3048 ,  G06F13/102 ,  G06F2201/86 ,  G06F2213/0038

Abstract: A system, e.g., a system on a chip (SoC) includes a first domain including a first processor configured to boot the system; a second domain including a processing subsystem having a second processor; and isolation circuitry between the first domain and the second domain During boot-up of the system, the first processor provides code to the second domain. When the code is executed by the second processor, it configures the processing subsystem as either a safety domain or as a general-purpose processing domain. The safety domain may an external safety domain or an internal safety domain.