Signal receiving device, and a semiconductor apparatus and a semiconductor system including the signal receiving device

A semiconductor apparatus comprising:

• a plurality of high-speed data receiving circuits configured to receive a plurality of data through a plurality of high-speed data pads, respectively, and generate a plurality of high-speed received signals;
• a high-speed strobe receiving circuit configured to receive a data strobe signal and a complementary data strobe signal through a plurality of high-speed strobe pads;
• a plurality of high-speed synchronization circuits configured to synchronize the plurality of high-speed received signals with the data strobe signal and the complementary data strobe signal, respectively, to generate a plurality of high-speed synchronized signals;
• a plurality of low-speed data receiving circuits configured to receive the plurality of data through a plurality of low-speed data pads, respectively, and generate a plurality of low-speed received signals;
• a low-speed strobe receiving circuit configured to receive the data strobe signal through one or more low-speed strobe pads;
• a plurality of low-speed synchronization circuits configured to synchronize the plurality of low-speed received signals with the data strobe signal to generate a plurality of low-speed synchronized signals;
• and
• a first selection circuit configured to output the plurality of high-speed synchronized signals as a plurality of internal signals or output the plurality of low-speed synchronized signals as the plurality of internal signals, according to an operation frequency.