Method of compensating for propagation delay of tri-state bidirectional bus in a semiconductor device

A method of detecting a propagation delay of a tri-state bidirectional bus connected between a master block and a slave block in a semiconductor device, the method comprising:

• generating an initial signal using the master block;
• transmitting the initial signal to the slave block via a unidirectional bus;
• selecting the slave block using the initial signal transmitted via the unidirectional bus;
• generating an allocated symbol using the selected slave block;
• transmitting the allocated symbol to the master block via the bidirectional bus;
• counting a number of clocks from a time when the selected slave block transmits the allocated symbol to a time when the allocated symbol reaches the master block;
• detecting the counted number of clocks as the propagation delay for the tri-state bidirectional bus;
• storing the counted number of clocks in the master block;
• transmitting data to the selected slave block via the bidirectional bus;
• generating an enable signal using the master block;
• and
• transmitting the enable signal to the selected slave block via the unidirectional bus after said transmitting the data, wherein a delay time between transmission of the data and transmission of the enable signal is equivalent to the detected propagation delay time for the selected slave block.

A method of detecting a propagation delay of a tri-state bidirectional bus connected between a master block and a slave block in a semiconductor device, the method comprising:

• generating an initial signal using the master block;
• transmitting the initial signal to the slave block via a unidirectional bus;
• selecting the slave block using the initial signal transmitted through the unidirectional bus;
• generating an allocated symbol using the selected slave block;
• transmitting the allocated symbol to the master block via the bidirectional bus;
• counting a number of clocks from a time when the selected slave block transmits the allocated symbol to a time when the allocated symbol reaches the master block;
• storing the counted number of clocks in the master block;
• detecting the stored number of clocks representing the propagation delay of the tri-state bidirectional bus;
• transmitting data from the master block to the selected slave block via the directional bus;
• generating an enable signal;
• transmitting the enable signal to the selected slave block via the unidirectional bus after said generating the enable signal, wherein a delay time between said transmitting the data and said transmitting the enable signal is equivalent to the detected propagation delay time for the selected slave block;
• and
• latching the data using the selected slave block in response to the enable signal.