SQUELCH DETECTION CIRCUIT

摘要

A squelch detection circuit according to the present invention comprises: an input level shifter (110) which receives a signal inputted through a signal line and shifts the electric potential level of the received signal to an electric potential level of a predetermined size; a comparator (140) which receives signals outputted from the input level shifter (110) and compares the received signals to determine whether a data signal is a noise element or a signal element; and a reset signal generator (160) which receives a signal output from the input level shifter (110), converts the received signal into a single signal, and generates a reset signal of an elastic buffer. The squelch detection circuit according to the present invention has advantages in that it detects squelch and provides a reset value for an elastic buffer in a USB 2.0 interface, and reduces power consumption as much as possible in a suspend mode.