IMPEDANCE MISMATCHING CIRCUIT TO REDUCE IMPEDANCE MISMATCH

摘要

PURPOSE: a kind of circuit of impedance mismatching is provided to improve the impedance matching of accuracy to reduce impedance mismatching and terminates pull-up and drop-down terminating terminating operating impedance matching by reducing. ;CONSTITUTION: in the circuit of an impedance mismatching to reduce impedance mismatching, calibration portion generates a pull-up impedance code and an impedance code. It is by pull-up impedance code that impedance value, which pulls up terminal (510),. It is by pull-down impedance code that impedance value, which pulls down terminating (520),. Impedance value mismatches controller and pulls down termination unit by the result of mismatch and above-mentioned pull-up driver. ;The 2012 of copyright KIPO submissions