Semiconductor integrated circuit, receiving device, and communication system

A receiving device comprising:

• a pair of differential receiving nodes connectable to a wired differential transmission path;
• a pair of differential signal lines connected to the pair of differential receiving nodes, the pair of differential signal lines including a first signal line and a second signal line;
• a first comparator including:
• a first input node electrically connected to the first signal line;
• a second input node electrically connectable to a first reference terminal at a first reference voltage;
• a third input node electrically connected to the second signal line;
• and
• a fourth input node electrically connectable to a second reference terminal at a second reference voltage different from the first reference voltage, wherein
• the first comparator is configured to output at least one of a first signal corresponding to a difference between a potential of the first input node and a potential of the second input node, and a second signal corresponding to a difference between a potential of the third input node and a potential of the fourth input node;
• a second comparator including:
• a fifth input node electrically connected to the first signal line;
• a sixth input node electrically connected to the second signal line;
• a seventh input node electrically connectable to a third reference terminal at a third reference voltage different from the first reference voltage and the second reference voltage;
• and
• an eighth input node electrically connectable to a fourth reference terminal at a fourth reference voltage different from the first reference voltage and the second reference voltage, wherein
• the second comparator is configured to output at least one of a third signal corresponding to a difference between a potential of the fifth input node and a potential of the seventh input node, and a fourth signal corresponding to a difference between a potential of the sixth input node and a potential of the eighth input node;
• and
• an internal circuit configured to restore a value indicated by a differential signal received by the pair of differential receiving nodes based on the at least one of the first and second signals and the at least one of the third and fourth signal.

A communication system comprising:

• a transmitting device;
• a wired differential transmission path connected to the transmitting device;
• and
• a receiving device comprising:
• a pair of differential receiving nodes connectable to a wired differential transmission path;
• a pair of differential signal lines connected to the pair of differential receiving nodes, the pair of differential signal lines including a first signal line and a second signal line;
• a first comparator including:
• a first input node electrically connected to the first signal line;
• a second input node electrically connectable to a first reference terminal at a first reference voltage;
• a third input node electrically connected to the second signal line;
• and
• a fourth input node electrically connectable to a second reference terminal at a second reference voltage different from the first reference voltage, wherein
• the first comparator is configured to output at least one of a first signal corresponding to a difference between a potential of the first input node and a potential of the second input node, and a second signal corresponding to a difference between a potential of the third input node and a potential of the fourth input node;
• and
• a second comparator including:
• a fifth input node electrically connected to the first signal line;
• a sixth input node electrically connected to the second signal line;
• a seventh input node electrically connectable to a third reference terminal at a third reference voltage different from the first reference voltage and the second reference voltage;
• and
• an eighth input node electrically connectable to a fourth reference terminal at a fourth reference voltage different from the first reference voltage and the second reference voltage, wherein
• the second comparator is configured to output at least one of a third signal corresponding to a difference between a potential of the fifth input node and a potential of the seventh input node, and a fourth signal corresponding to a difference between a potential of the sixth input node and a potential of the eighth input node;
• and
• an internal circuit configured to restore a value indicated by a differential signal received by the pair of differential receiving nodes based on the at least one of the first and second signals and the at least one of the third and fourth signals.