Texas Instruments Corporation

Charles W Brokish

Erdal Paksoy

Steve Karouby

Narendar M Shankar

Olivier Schuepbach

David Michael Alter

Jamil Chaoui

Narender Madurai Shankar

Olivier Schuepach

An integrated circuit () includes an on-chip boot ROM () holding boot code, a non-volatile security identification element () having non-volatile information determining a less secure type or more secure type, and a processor (). The processor () is coupled to the on-chip boot ROM () and to the non-volatile security identification element () to selectively execute boot code depending on the non-volatile information of the non-volatile security identification element (). Other technology such as processors, methods of operation, processes of manufacture, wireless communications apparatus, and wireless handsets are also disclosed.

Less-secure processors, integrated circuits, wireless communications apparatus, methods for operation thereof, and methods for manufacturing thereof

Less-secure processors, integrated circuits, wireless communications apparatus, methods and processes of making

An integrated circuit () includes an on-chip boot ROM () holding boot code, a non-volatile security identification element () having non-volatile information determining a less secure type or more secure type, and a processor (). The processor () is coupled to the on-chip boot ROM () and to the non-volatile security identification element () to selectively execute boot code depending on the non-volatile information of the non-volatile security identification element(). Other technology such as processors, methods of operation, processes of manufacture, wireless communications apparatus, and wireless handsets are also disclosed.

Cycle-accurate real-time clocks and methods to operate the same are disclosed. An example real-time clock comprises a first counter to count cycles of a selectively-operable clock, a multiplexer to select from at least an output signal associated with the first counter or a continuously-operating clock, and a second counter to count cycles of an output signal of the multiplexer.

Cycle-accurate real-time clocks and methods to operate the same

An operating system (OS) is used in a system with a processor that includes embedded real-time analysis components. The OS includes software objects which provide functionality in response to signals from the embedded real-time analysis components. In an example embodiment, the OS is a real-time OS (RTOS), the embedded real-time analysis components include an embedded event trigger component, and the software objects include a debug object that responds to signals from the embedded event trigger component. For instance, those signals may relate to program flow, data flow, or a hardware operation such as a cache miss, and the debug object may be a breakpoint handler, a trace handler, or an event sequence handler. In the example embodiment, the software objects in the RTOS provide functionality such as stack overflow detection, real-time task priority modification, and/or system scheduling error assertion for a real-time application. Alternative embodiments involve related methods and systems.

Method using embedded real-time analysis components with corresponding real-time operating system software objects

A delayed adaptive least-mean-square (LMS) filter, which has one filter coefficient per tap and acquires a new data sample each frame, calculates a finite impulse response (FIR) filter output and updates the filter coefficients using an error term based on the FIR filter output calculated during the preceding frame. The calculations for each tap are performed in a single clock cycle. The filter can be implemented using a general purpose, programmable digital signal processor (DSP) architecture having two multiply and accumulate circuits (MACs), with or without an arithmetic logic unit (ALU), and preferably implements its memory buffers as dual-access or dual-port RAM or banked memory.

Growing community of inventors

Poynette, WI, United States of America

Charles W Brokish