Abstract:
A central processing unit (CPU) having an interrupt unit for interrupting execution of instructions, a plurality context defining register sets, wherein each set of registers having the same number of CPU registers, a switching unit for coupling a selected register set within the CPU, wherein the switching unit switches to a predetermined register set of the plurality of context defining register sets upon occurrence of an exception, and a control register configured to control selection of a register set of the plurality of context defining register initiated by an instruction and further operable to indicate a currently used context.
Abstract:
The average of a complex waveform measured over a time period may be determined by first converting the complex waveform to a voltage, then converting this voltage to a current and using this current to charge a capacitor. At the end of the measurement time period the voltage charge (sample voltage) on the capacitor may be sampled by a sample and hold circuit associated with an analog-to-digital converter (ADC). Then the voltage charge on the sample capacitor may be removed, e.g., capacitor plates shorted by a dump switch in preparation for the next average of the complex waveform sample measurement cycle. The ADC then converts this sampled voltage charge to a digital representation thereof and a true average of the complex waveform may be determined, e.g., calculated therefrom in combination with the measurement time period.
Abstract:
In a debugging method for an integrated circuit device which has multiple processing cores, a debugging breakpoint is activated at a first processor core in the integrated circuit device. Upon activation, the debugging breakpoint stops execution of instructions in the first processor core and the debugging breakpoint is communicated to a second processor core in the integrated circuit device.
Abstract:
An integrated circuit amplifier configurable to be either a programmable gain amplifier or an operational amplifier comprises two output blocks, one output block is optimized for programmable gain amplifier operation, and the other output block is optimized for operational amplifier applications. A common single input stage, input offset calibration and bias generation circuits are used with either amplifier configuration. Thus duplication of the input stage, offset calibration and bias generation circuits are eliminated while still selectably providing for either a programmable gain amplifier or operational amplifier configuration.
Abstract:
An embedded device has a plurality of processor cores, each with a plurality of peripheral devices, wherein each peripheral device has an output. Furthermore, a housing with a plurality of assignable external pins and a protected pin ownership logic for each assignable external pin is provided and configured to be programmable to assign an output function of an associated assignable external pin to only one of the plurality of processor cores.
Abstract:
A central processing unit (CPU) having an interrupt unit for interrupting execution of instructions, a plurality context defining register sets, wherein each set of registers having the same number of CPU registers, a switching unit for coupling a selected register set within the CPU, wherein the switching unit switches to a predetermined register set of the plurality of context defining register sets upon occurrence of an exception, and a control register configured to control selection of a register set of the plurality of context defining register initiated by an instruction and further operable to indicate a currently used context.
Abstract:
A plurality of PWM generators have user configurable time delay circuits for each PWM control signal generated therefrom. The time delay circuits are adjusted so that each of the PWM control signals arrive at their associated power transistors at the same time. This may be accomplished by determining a maximum delay time of the PWM control signal that has to traverse the longest propagation time and then setting the delay for that PWM control signal to substantially zero delay. Thereafter, all other delay time settings for the other PWM control signals may be determined by subtracting the propagation time for each of the other PWM control signals from the longest propagation time. Thereby insuring that all of the PWM control signals arrive at their respective power transistor control nodes with substantially the same time relationships as when they left their respective PWM generators.
Abstract:
An analog to digital converter (ADC) includes voltage inputs, a transconductor configured to convert the voltage inputs into currents, current-controlled oscillators, a counter, and digital logic. The current-controlled oscillators propagate respect currents from the transconductor. The counter is configured to count repeated traversal of one or more oscillators. The digital logic is configured to, based upon results from the counter, provide a code configured to indicate a value of associated voltage input.
Abstract:
Embodiments of the present disclosure include a microcontroller with a processor core, memory, and a plurality of peripheral devices including a differential digital delay line analog-to-digital converter (ADC). The ADC includes differential digital delay lines and circuit comprising a set of delay elements included in the differential digital delay lines configured to generate data representing an analog to digital conversion of an input. The microcontroller also includes a digital comparator coupled with an output of the ADC and an associated register, wherein at least one output of the digital comparator is configured to directly control another peripheral of the plurality of peripherals.
Abstract:
Embodiments of the present disclosure include a differential digital delay line analog-to-digital converter (ADC), comprising differential digital delay lines including series coupled delay cells, wherein a delay time of a first delay line is controlled by a first input of the ADC and a delay time of a second delay line is controlled by a second input of the ADC. The ADC includes a pair of bypass multiplexers coupled at a predefined node location in the series coupled delay cells, latches each coupled with the series coupled delay cells, a converter circuit coupled with the plurality of latches configured to convert data from the latches into an output value of the ADC, and logic circuits configured to select data from the series coupled delay cells to the latches depending on a selected resolution of the differential digital delay line analog-to-digital converter.