公开(公告)号：US20220391345A1

公开(公告)日：2022-12-08

申请号：US17341089

申请日：2021-06-07

Applicant: Texas Instruments Incorporated

Inventor： Anant Shankar KAMATH ,  Rakesh HARIHARAN ,  Vivekkumar Ramanlal VADODARIYA ,  Soumi PAUL ,  Mayank GARG

IPC: G06F13/42 ,  G06F13/38 ,  G06F1/3215

Abstract: A bus repeater includes first and second bus ports, a first termination resistor network coupled to the first bus port, a second termination resistor network coupled to the second bus port, and a power state change detection circuit coupled to the second bus port. The power state change detection circuit is configured to detect a power state change initiated by a device coupled to the first bus port. The detection of the power state change includes a determination that a voltage on the second bus port exceeds a threshold. Responsive to detection of the power state change, the power state change detection circuit is configured cause a change in a configuration of at least one of the first or second termination resistor networks.

公开(公告)号：US20230111096A1

公开(公告)日：2023-04-13

申请号：US17732391

申请日：2022-04-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rakesh HARIHARAN ,  Tarunvir SINGH ,  Anant Shankar KAMATH ,  Mark Edward WENTROBLE ,  Christopher Joseph RODRIGUES ,  Prajwala PUTTAPPA

IPC: G06F13/38 ,  G06F13/42

Abstract: In an example, a method of operating a repeater having an isolation barrier to isolate a host side of the repeater from a peripheral side of the repeater, the repeater operable to be coupled to a universal serial bus (USB), includes causing the host side to enter into a suspend mode. The method also includes, responsive to entering the suspend mode, disabling a host isolation transceiver at the host side. The method includes periodically enabling the host isolation transceiver to transmit a data signal from the host side to the peripheral side. The method includes exiting the suspend mode. The method also includes enabling the host isolation transceiver.

公开(公告)号：US20220391217A1

公开(公告)日：2022-12-08

申请号：US17521378

申请日：2021-11-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mark Edward WENTROBLE ,  Anant Shankar KAMATH ,  Rakesh HARIHARAN ,  Prajwala P ,  Suzanne Mary VINING

IPC: G06F9/4401 ,  G06F13/42

Abstract: A serial bus repeater includes first and second ports adapted to be coupled to respective devices. A first termination resistor network couples to the first port. A second termination resistor network couples to the second port. A squelch detect circuit couples to the first bus port and is configured to detect activity on the first bus and to generate a squelch signal responsive to detection of activity on the first port. A first state machine is configured to: determine an elapsed time during which the squelch signal indicates activity on the first port; determine that the elapsed time exceeds a first threshold; and, responsive to the determination that the elapsed time exceeds the first threshold, assert configuration signals to reconfigure the first and second termination resistor networks.