Synchronous processing system and semiconductor integrated circuit
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United States of America Patent
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Jan 30, 2018
Grant Date -
Aug 27, 2015
app pub date -
May 8, 2015
filing date -
Dec 18, 2009
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Abstract
A synchronous processing system having semiconductor integrated circuits. One of the semiconductor integrated circuits as a master chip includes a first synchronization controller and a first counter controller that allows a counter in the master chip to perform counting synchronously with a clock pulse in response to a synchronization control signal from the first synchronization controller. Another semiconductor integrated circuit as a slave chip includes a second synchronization controller that receives the synchronization control signal from the master chip, and a second counter controller that allows a counter in the slave chip to perform counting synchronously with the clock pulse in response to the synchronization control signal received. Each of the first and second counter controllers allows the counter to stop counting if the synchronization control signal is not supplied at the time point that a count value of the counter has reached a predetermined value.
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