US 2022/0413045 A1 · APPARATUS AND METHOD FOR IMPLEMENTING A SCALABLE DIGITAL INFRASTRUCTURE FOR MEASURING RING OSCILLATORS

Abstract

An apparatus has a collection of ring oscillators. An instruction register block is configured to sequentially address and activate each ring oscillator in the collection of ring oscillators. A multiplexer with input lines is connected to each ring oscillator in the collection of ring oscillators and an output line. A pulse counter is connected to the output line of the multiplexer to count the number of oscillations of a selected ring oscillator within a selected time period to form a multiple bit frequency count output signal. A data shift register receives the multiple bit frequency count output signal and produces a serial frequency count output signal.

Claims18

Dependent claims

An apparatus, comprising:

a collection of ring oscillators;
an instruction register block configured to sequentially address and activate each ring oscillator in the collection of ring oscillators;
a multiplexer with input lines connected to each ring oscillator in the collection of ring oscillators and an output line;
a pulse counter connected to the output line of the multiplexer to count the number of oscillations of a selected ring oscillator within a selected time period to form a multiple bit frequency count output signal;
and
a data shift register to receive the multiple bit frequency count output signal and produce a serial frequency count output signal.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/848,934Filed 24 Jun 2022

Priority

25 Jun 2021

Published

29 Dec 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

G01R 31/3016
Marginal testing, e.g. by varying supply voltage: delay or race condition test, e.g. race hazard test
G06F 1/12
Generating or distributing clock signals or signals derived directly therefrom: synchronisation of different clock signals provided by a plurality…
G01R 31/31726
Timing aspects, e.g. clock distribution, skew, propagation delay: synchronization, e.g. of test, clock or strobe signals; Signals in different…
G01R 31/318516
Reconfiguring for testing, e.g. LSSD, partitioning: test of programmable logic devices [PLDs]

Apparatus and method for implementing a scalable digital infrastructure for measuring ring oscillators

Life of this patent

Apparatus and method for implementing a scalable digital infrastructure for measuring ring oscillators

Life of this patent

Abstract

Claims18