Signal transmitting device suitable for fast signal transmission including an arrangement to reduce signal amplitude in a second stage transmission line

A signal receiving module connected to a main transmission line terminated by a first element having a resistance equal to or close to an impedance value of said main transmission line, comprising:

• a first intra-block transmission line for transmitting a signal inputted from said main transmission line to a transmitting/receiving circuit, and including a second element having a resistance equal to or close to a value derived by subtracting a half of the impedance value of said main transmission line from an impedance value of said first intra-block transmission line;
• a second intra-block transmission line for transmitting a signal from said transmitting/receiving circuit to a receiving circuit and including a third element connected to said second intra-block transmission line for terminating said second intra-block transmission line;
• and
• a fourth element connected between said transmitting/receiving circuit and said second intra-block transmission line for reducing the voltage of the signal outputted from the transmitting/receiving circuit which is applied to the second intra-block transmission line.

A signal transmitting device comprising:

• a main transmission line including a first element for terminating said main transmission line;
• a first circuit block connected to said main transmission line, said first circuit block including:
• a driving circuit for driving a signal;
• and
• a first intra-block transmission line for transmitting the signal outputted from said driving circuit to said main transmission line and including a second element for producing a voltage drop thereacross;
• and
• a second circuit block connected to said main transmission line, said second circuit block including:
• a second intra-block transmission line for transmitting a signal inputted from said main transmission line to a transmitting/receiving circuit, and including a third element for producing a voltage drop thereacross;
• a third intra-block transmission line for transmitting a signal outputted from said transmitting/receiving circuit to a receiving circuit and including a fourth element connected to said third intra-block transmission line for terminating said third intra-block transmission line;
• and
• a fifth element connected between said transmitting/receiving circuit and said third intra-block transmission line for reducing the voltage of the signal outputted from the transmitting/receiving circuit which is applied to the third intra-block transmission line;
• resistances of said first and fourth elements being equal to each other, resistances of said second, third and fifth elements being equal to each other.

A signal transmitting device, comprising:

• a main transmission line terminated by a first element having a resistance close to an impedance value of said main transmission line;
• a first circuit block connected to said main transmission line, said first circuit block including:
• a driving circuit for driving a signal;
• and
• a first intra-block transmission line for transmitting the signal outputted from said driving circuit and including a second element having a resistance set to suppress signal reflexions at branching points;
• a second circuit block being a memory module and connected to said main transmission line, said second circuit block including:
• a transmitting/receiving circuit for receiving a signal and transmitting said received signal;
• a second intra-block transmission line for transmitting a signal inputted from said main transmission line to said transmitting/receiving circuit and including a third element having a resistance set to suppress signal reflexions at branching points,
• a receiving circuit for receiving the signal outputted from said transmitting/receiving circuit;
• a third intra-block transmission line for transmitting a signal between said transmitting/receiving circuit and said receiving circuit;
• and
• a fourth element connected between said transmitting/receiving circuit and said third intra-block transmission line for producing a voltage drop thereacross.

A memory module connectable to a main transmission line terminated by a first element having a resistance equal to or close to an impedance value of said main transmission line, comprising:

• a transmitting/receiving circuit for receiving a signal and transmitting said received signal;
• a first intra-block transmission line for transmitting a signal inputted from said main transmission line to said transmitting/receiving circuit and including a second element having a resistance in order to suppress signal reflexions at branching points,
• a receiving circuit for receiving the signal outputted from said transmitting/receiving circuit;
• a second intra-block transmission line for transmitting a signal between said transmitting/receiving circuit and said receiving circuit, and
• a third element connected between said transmitting/receiving circuit and said second intra-block transmission line for producing a voltage drop thereacross.