Scan-mode indication technique for an integrated circuit
AssigneeCirrus Logic, Inc.
InventorGautham Kamath
Life of this patent
Estimating the term…
Abstract
An integrated circuit and method for indicating the integrated circuit to enter into a scan mode are disclosed. A designated signal, such as an analog supply signal, for an analog block of an integrated circuit is utilized for indicating entry of a digital block of the integrated circuit into a scan mode. Operations of the analog block and the digital block are generally independent from each other during scan mode. Prior to the digital block utilizing the designated signal, voltage rails for the designated signal are resolved with the voltage rails of a digital supply signal for the digital block.
Claims16
A method for indicating an integrated circuit to enter into a scan mode, comprising:
- utilizing a designated signal for an analog block of an integrated circuit for indicating entry of a digital block of the integrated circuit into a scan mode wherein operations of the analog block and the digital block are generally independent from each other in the scan mode;
- and
- prior to the digital block utilizing the designated signal, resolving voltage rails for the designated signal with other voltage rails of a digital supply signal for the digital block.
An integrated circuit, comprising:
- an analog block;
- and
- a digital block coupled to the analog block;
- and
- wherein a designated signal for the analog block is utilized for indicating entry of the digital block into a scan mode;
- and
- wherein operations of the analog block and digital block are generally independent from each other in the scan mode;
- and
- wherein prior to the digital block utilizing the designated signal, voltage rails for the designated signal are resolved with other voltage rails of a digital supply signal for the digital block.
A method for utilizing in an integrated circuit a signal that is designated for one purpose for one block for another purpose by another block, comprising:
- sending a signal that is solely designated for one purpose for one block to another block;
- and
- using the signal, by the another block, for another purpose wherein operations of the one block and the another block are generally mutually exclusive during a special mode of operation;
- and
- prior to the another block using the signal, resolving voltage rails of the signal with other voltage rails of another signal for the another block.
Dependencies are inferred from the claim text.