Data transmitting/receiving buffer

A data transmitting/receiving buffer for transmitting/receiving data via a data line provided between a first apparatus and a second apparatus, comprising:

• a receiver which receives a signal on said data line and which outputs the receiving data;
• a driver which outputs transmitting data to said data line when a transmitting enable signal is supplied;
• and
• a receiving signal trigger output circuit which outputs a receiving trigger signal based on said transmitting enable signal and said receiving data.

A data transmitting/receiving buffer for transmitting/receiving data via a data line provided between a first apparatus and a second apparatus, comprising:

• a receiver which receives a signal on said data line and which outputs the receiving data;
• a driver which outputs transmitting data to said data line when a transmitting enable signal is supplied;
• and
• a transmitting signal trigger output circuit which outputs a transmitting trigger signal based on said transmitting enable signal and said transmitting data;
• and
• a receiving signal trigger output circuit which outputs a receiving trigger signal based on said transmitting enable signal and said receiving data.

A data transmitting/receiving buffer for transmitting/receiving data via a data line provided between a first apparatus and a second apparatus, comprising:

• a receiver which receives a signal on said data line and which outputs receiving data;
• a driver which outputs transmitting data to said data line when a transmitting enable signal is supplied;
• and
• a trigger output circuit which holds said transmitting enable signal at timing where said receiving data is changed and which outputs said transmitting enable signal as a trigger signal.