Interface circuit for full-custom and semi-custom clock domains

Details Interface circuit for full-custom and semi-custom clock domains Interface circuit for full-custom and semi-custom clock domains

G - Physics

06

F

G06F 1/12 (2006.01) H01L 21/822 (2006.01) H01L 27/02 (2006.01) H01L 27/04 (2006.01) H03K 5/00 (2006.01) H03K 5/13 (2006.01) H03K 5/135 (2006.01) H03K 19/0175 (2006.01)

Patent

CA 2302020

An integrated circuit comprises an interface circuit between analog circuit part FC (full-custom) and digital circuit part SC (semi-custom) for every signal to be exchanged. The interface circuits are combined to form a central interface block. As a result, line lengths and loads are predetermined, which yields a simplified dimensioning of the gates and their drivers as well as an exact timing simulation of the semi- custom part. Developments are directed to the application of predetermined signals and the sequential through-connection of a signal at the outputs of the interface facing toward the digital circuit part.

L'invention concerne un circuit intégré comportant, entre une partie analogique de circuit (FC) (FC = "fullcustom" = à la demande) et une partie numérique de circuit (SC) (SC = "semicustom" = personnalisable), un circuit d'interface pour chaque signal à échanger. Les circuits d'interfaces sont regroupés en un bloc d'interfaces central. Les longueurs de lignes et les charges sont de ce fait prédéfinies, de qui simplifie le dimensionnement de la porte et de ses circuits d'attaque. Des variantes perfectionnées concernent la création de signaux prédéfinis et la connexion, dans l'ordre, de signaux aux sorties de l'interface, qui font face à la partie numérique du circuit.

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