公开(公告)号：US20220260631A1

公开(公告)日：2022-08-18

申请号：US17739025

申请日：2022-05-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/28 ,  G01R31/3177 ,  G01R31/3185

Abstract: The disclosure describes a novel method and apparatus for improving interposers to include embedded monitoring instruments for real time monitoring digital signals, analog signals, voltage signals and temperature sensors located in the interposer. An embedded monitor trigger unit controls the starting and stopping of the real time monitoring operations. The embedded monitoring instruments are accessible via an 1149.1 TAP interface on the interposer.

公开(公告)号：US20220230928A1

公开(公告)日：2022-07-21

申请号：US17715006

申请日：2022-04-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: H01L21/66 ,  G01R31/3185 ,  G01R31/28 ,  H01L23/48 ,  H01L25/065

Abstract: In one example, an integrated circuit comprises a die. The die has a first surface and a second surface, the second surface opposite to the first surface. The die also includes: a first contact on the first surface and a second contact on the second surface; a through silicon via having a first end and a second end, the first end coupled to the first contact and the second end coupled to the second contact; and a scan cell having a control input, a response input, and a stimulus output, the response input coupled to the first end and the stimulus output coupled to the second end.

公开(公告)号：US20220196736A1

公开(公告)日：2022-06-23

申请号：US17692057

申请日：2022-03-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/3177 ,  G01R31/3185 ,  G06F11/26 ,  G01R31/317 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56

Abstract: In some examples, an integrated circuit comprises: a TDI input, a TDO output, a TCK input and a TMS input; a TAP state machine (TSM) having an input coupled to the TCK input, an input coupled to the TMS input, an instruction register control output, a TSM data register control (DRC) output, and a TSM state output; an instruction register having an input coupled to the TDI input, an output coupled to the TDO output, and a control input coupled to the instruction register control output of the TAP state machine; router circuitry including a TSM DRC input coupled to the TSM DRC output, a control DRC input coupled to the TSM state output, and a router DRC output; and a data register having an input coupled to the TDI input, an output coupled to the TDO output, and a data register DRC input coupled to the router DRC output.

公开(公告)号：US11333703B2

公开(公告)日：2022-05-17

申请号：US17181402

申请日：2021-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/28 ,  G01R31/3177 ,  G01R31/3185

Abstract: The disclosure describes a novel method and apparatus for improving interposers to include embedded monitoring instruments for real time monitoring digital signals, analog signals, voltage signals and temperature sensors located in the interposer. An embedded monitor trigger unit controls the starting and stopping of the real time monitoring operations. The embedded monitoring instruments are accessible via an 1149.1 TAP interface on the interposer.

公开(公告)号：US11302591B2

公开(公告)日：2022-04-12

申请号：US17018435

申请日：2020-09-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/28 ,  H01L21/66 ,  G01R31/3185 ,  H01L23/48 ,  H01L25/065

Abstract: The disclosure describes a novel method and apparatus for testing different types of TSVs in a single die or different types of TSV connections in a stack of die. The testing is facilitated by test circuitry associated with each type of TSV. The test circuitry includes a scan cell adapted for testing TSVs.

公开(公告)号：US11287473B2

公开(公告)日：2022-03-29

申请号：US17117532

申请日：2020-12-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/3177 ,  G01R31/3185 ,  G06F11/26 ,  G01R31/317 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56 ,  H01L27/12

Abstract: This disclosure describes different ways to improve the operation of a device's 1149.1 TAP to where the TAP can perform at-speed Update & Capture, Shift & Capture and Back to Back Capture & Shift operations. In a first embodiment of the disclosure the at-speed operations are achieved by time division multiplexing CMD signals onto the TMS input to the TAP. The CMD signals are input to a CMD circuit that operates in conjunction with a Dual Port Router to execute the at-speed operations of a circuit. In a second embodiment of the disclosure the at-speed operations are achieved by detecting the TAP's Exit1DR state as a CMD signal that is input to the CMD circuit that operates in conjunction with a Dual Port Router to execute the at-speed operations of a circuit. In a third embodiment of the disclosure the at-speed operations are achieved by detecting the TAP's Exit1DR and PauseDR states and in response producing Capture and Update signals that are input to a Programmable Switch that operates in conjunction with a Dual Port Router to execute the at-speed operations of a circuit. In a fourth embodiment of the disclosure the at-speed operations are achieved by detecting the TAP's Exit1DR and PauseDR states and inputting these states to a Dual Port Router to control the at-speed operations of a circuit. Each of the embodiments may be augmented to include externally accessible Update and Capture input signals that can be selected to allow a tester to directly control the at-speed operations of a circuit. The improvements of the disclosure are achieved without requiring any additional IC pins beyond the 4 required TAP pins, except for examples showing use of additional data input pins (TDI or WPI signals), additional data output pins (TDO or WPO signals) or examples showing use of additional control input pins (Capture and Update signals). Devices including the TAP improvements can be operated compliantly in a daisy-chain arrangement with devices that don't include the TAP improvements.

公开(公告)号：US20220065930A1

公开(公告)日：2022-03-03

申请号：US17522477

申请日：2021-11-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/317 ,  G01R31/3185 ,  G01R31/3177

Abstract: The disclosure provides a novel method and apparatus for inputting addresses to devices to select the device TAP for access. Further, the disclosure provides a novel method and apparatus for inputting addresses for selecting device TAPs and for inputting commands for commanding circuitry within the device. The inputting of addresses or the inputting of addresses and commands is initiated by a control bit input on TDI that is recognized during the Run Test/Idle, Pause-DR or Pause-IR TAP states.

公开(公告)号：US11255908B2

公开(公告)日：2022-02-22

申请号：US16843535

申请日：2020-04-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/3185 ,  G01R31/3177 ,  G01R31/28

Abstract: The present disclosure describes novel methods and apparatuses for directly accessing JTAG Tap domains that exist in a scan path of many serially connected JTAG Tap domains. Direct scan access to a selected Tap domain by a JTAG controller is achieved using auxiliary digital or analog terminals associated with the Tap domain and connected to the JTAG controller. During direct scan access, the auxiliary digital or analog terminals serve as serial data input and serial data output paths between the selected Tap domain and the JTAG controller.

公开(公告)号：US11175339B2

公开(公告)日：2021-11-16

申请号：US16904142

申请日：2020-06-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/3177 ,  G01R31/3185 ,  G01R31/317 ,  H01L23/00

Abstract: The disclosure describes a novel method and apparatus for improving interposers that connected stacked die assemblies to system substrates. The improvement includes the addition of IEEE 1141.1 circuitry within interposers to allow simplifying interconnect testing of digital and analog signal connections between the interposer and system substrate it is attached too. The improvement also includes the additional 1141.1 controlled circuitry that allows real time monitoring of voltage supply and ground buses in the interposer. The improvement also includes the additional of 1141.1 controlled circuitry that allows real time monitoring of functional digital and analog input and output signals in the interposer. The improvement also provides the ability to selectively serially link the 1141.1 circuitry in the interposer with 1141.1 circuitry in the die of the stack.

公开(公告)号：US11105852B2

公开(公告)日：2021-08-31

申请号：US16825434

申请日：2020-03-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Lee D. Whetsel

IPC: G01R31/3177 ,  G01R31/3185 ,  G01R31/317

Abstract: The disclosure describes novel methods and apparatuses for controlling a device's TCA circuit when the device exists in a JTAG daisy-chain arrangement with other devices. The methods and apparatuses allow the TCA test pattern set used during device manufacturing to be reused when the device is placed in a JTAG daisy-chain arrangement with other devices, such as in a customers system using the device. Additional embodiments are also provided and described in the disclosure.