Circuits and methods for bi-directional data communication over isolation channels

A method comprising:

• adjusting, by a first data communication circuit, a capacitance of a first crosstalk suppression circuit included in the first data communication circuit, the first crosstalk suppression circuit being configured to suppress crosstalk between a transmitter and a receiver of the first data communication circuit;
• in response to determining that adjustment of the capacitance of the first crosstalk suppression circuit has been completed, adjusting, by a second data communication circuit, a capacitance of a second crosstalk suppression circuit included in the second data communication circuit, the second crosstalk suppression circuit being configured to suppress crosstalk between a transmitter and a receiver of the second data communication circuit;
• and
• after completing adjustment of the capacitance of the second crosstalk suppression circuit:
• providing a first calibration signal from the first data communication circuit to the second data communication circuit, the first calibration signal being based on a clock signal of the first data communication circuit;
• providing a second calibration signal from the second data communication circuit to the first data communication circuit, the second calibration signal being based on a clock signal of the first data communication circuit;
• determining, by the first data communication circuit, based on the second calibration signal:
• a threshold of a comparator included in the receiver of the first data communication circuit;
• and
• a clock recovery delay for a decoder of the first data communication circuit;
• and
• determining, by the second data communication circuit, based on the first calibration signal:
• a threshold of a comparator included in the receiver of the second data communication circuit;
• and
• a clock recovery delay for a decoder of the second data communication circuit.