Semiconductor apparatus and system

A semiconductor apparatus comprising:

• a plurality of semiconductor dies stacked over a base die;
• a controller electrically coupled to the base die;
• and
• a direct access ball electrically coupled to the base die through a substrate,
• wherein the base die includes a first input/output circuit block which transmits and receives signals to and from the controller, and a second input/output circuit block which transmits and receives signals to and from the direct access ball,
• wherein the second input/output circuit block converts signals, which are received from the direct access ball and each bit of which has the same data valid window as each other, into at least two kinds of signals, some bits of which have longer data valid windows than the other bits, and outputs the converted signals, and
• wherein the first input/output circuit block receives output signals of the second input/output circuit block, and outputs signals, each bit of which has the same data valid window as each other, by capturing bits having longer data valid windows than the other bits.

A system comprising:

• a transmission block configured to convert an input signal into two or more synchronization signals, some bits of which have longer data valid windows than the other bits, and output the two or more synchronization signals;
• and
• a reception block configured to generate the output signal by capturing bits having longer data valid windows between the two or more synchronization signals,
• wherein the transmission block alternately outputs the some bits and the other bits in series,
• wherein the transmission block is configured to convert the input signal into a rising synchronization signal and a falling synchronization signal, and output the rising synchronization signal, a first bit of which has a longer data valid window than a second bit, and the falling synchronization signal, a second bit of which has a longer data valid window than a first bit.