Fehlererkennung in Registern

Details

Veröffentlichungs-Nr.

EP3428665

Aktenzeichen

EP17180696

Anmeldetag

11. Juli 2017

Veröffentlichung

25. März 2020

Erteilung

25. März 2020

Rechtsraum

EP

IPC

G01R31/3181G01R31/3185G11C29/56G11C29/34G11C29/44G11C29/12G11C29/32

Abstract

A method of detecting faults in a register bank, the register bank comprising at least one chain of registers, is disclosed. The method comprises sequentially shifting parameters stored in each register of the chain to an output node of the chain and inverting each parameter and feeding each parameter back to an input node of that chain, and sequentially shifting the inverted parameters through the chain until all the non-inverted parameters have been output at the output node. A first checksum of the parameters output at the output node is calculated. The inverted parameters in each register of the chain are sequentially shifted to the output node of the chain, and each inverted parameter is inverted to restore the non-inverted parameters, feeding each non-inverted parameter back to the input node of that chain and sequentially shifting the non-inverted parameters through the chain until all the inverted parameters have been output at the output node. A second checksum of the inverted parameters output at the output node is calculated, and the first and second checksums are compared.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete