High-speed serial interface circuit and electronic instrument

Details High-speed serial interface circuit and electronic instrument High-speed serial interface circuit and electronic instrument

2008-08-22

2010-02-16

Nguyen, Linh V (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Serial to parallel

C341S101000, C375S242000, C375S244000, C375S354000, C375S358000, C375S376000

Reexamination Certificate

active

07663515

ABSTRACT:
A high-speed serial interface circuit includes a data receiver circuit, a clock signal receiver circuit, a logic circuit block that includes at least a serial/parallel conversion circuit, a free-running clock signal generation circuit, a clock signal detection circuit, and an output mask circuit. The clock signal detection circuit compares a received clock signal from the clock signal receiver circuit with a free-running clock signal from the free-running clock signal generation circuit to detect whether or not clock signals are transferred through differential clock signal lines. When the clock signal detection circuit has detected that the clock signals are not transferred through the differential clock signal lines, the output mask circuit masks an output signal from the logic circuit block so that the output signal is not transmitted to a circuit in the subsequent stage. The present invention can prevent a partial characteristic variation by NBTI by inputting a free-running clock into a logic block, and operating it.

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