Controlling Asynchronous Clock Domains to Perform Synchronous Operations

Mechanisms for controlling asynchronous clock domains to perform synchronous operations are provided. With these mechanisms, when a synchronous operation is to be performed on a chip, the latches of the functional elements of the chip are controlled by a synchronous clock so that the latches are con...

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Hauptverfasser: RILEY MACK W, CHELSTROM NATHAN P
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creator RILEY MACK W
CHELSTROM NATHAN P
description Mechanisms for controlling asynchronous clock domains to perform synchronous operations are provided. With these mechanisms, when a synchronous operation is to be performed on a chip, the latches of the functional elements of the chip are controlled by a synchronous clock so that the latches are controlled synchronously even across asynchronous boundaries of the chip. The synchronous operation may then be performed and the chip's functional elements returned to being controlled by a local clock in an asynchronous manner after completion of the synchronous operation. This synchronous operation may be, for example, a power on reset (POR) operation, a manufacturing test sequence, debug operation, or the like.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
MULTIPLEX COMMUNICATION
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Controlling Asynchronous Clock Domains to Perform Synchronous Operations
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