SEMICONDUCTOR DEVICE, SEMICONDUCTOR SYSTEM, AND METHOD FOR USE IN OPERATING THE SAME BASED ON OPERATION MODE INFORMATION

摘要

A semiconductor device includes a flag signal generating circuit, a reference voltage generating circuit, and a first buffer. The flag signal generating circuit generates a flag signal based on an internal command and a training control code which are extracted from an external signal. The reference voltage generating circuit receives a set code based on the flag signal, an input control code and an output control code, and generates a reference voltage whose level is set based on the set code. The first buffer buffers the external signal based on the reference voltage to generate an internal signal, and generates a calibration code from the internal signal based on the flag signal to output the calibration code.

主权项

1. A semiconductor device comprising:
a flag signal generating circuit to generate a flag signal based on an internal command and a training control code which are extracted from an external signal; a reference voltage generating circuit to receive a set code based on the flag signal, an input control code and an output control code, and to generate a reference voltage having a level that is set based on the set code; and a buffer to buffer the external signal based on the reference voltage for generating an internal signal, and to generate a calibration code from the internal signal based on the flag signal for outputting the calibration code.