Adaptation to 3-phase signal swap within a trio

A system comprising:

• means for transmitting a 3-phase signal on each of three wires of a 3-wire communication link in different phases, including an encoder that encodes data in transitions of signaling state of the three wires;
• means for receiving the 3-phase signal from the 3-wire communication link;
• means for determining presence of a misalignment of the 3-wire communication link involving two or more wires;
• and
• means for correcting phase relationships between two or more signals carried on the three wires, including logic configured to invert a first bit of a 3-bit symbol corresponding to a transition in signaling state of the 3-wire communication link when the misalignment of the 3-wire communication link is determined to affect the phase relationships between the two or more signals,
• wherein the first bit of the 3-bit symbol indicates a direction of phase rotation between states of the 3-phase signal at the transition of signaling state of the 3-wire communication link.

An apparatus, comprising:

• a communications interface configured to communicate data using a 3-phase signal transmitted in different phases on all three wires of a 3-wire communication link;
• correction logic configured to correct phase relationships between two or more signals carried on the 3-wire communication link;
• and
• a processing circuit configured to:
• determine presence of a misalignment of the 3-wire communication link;
• and
• cause the correction logic to invert a first bit of a 3-bit symbol corresponding to a transition of signaling state of the 3-wire communication link when the misalignment of the 3-wire communication link involving two or more wires is determined to affect the phase relationships between two or more signals carried on the 3-wire communication link, and the first bit of the 3-bit symbol indicates a direction of phase rotation between states of the 3-phase signal at the transition of signaling state of the 3-wire communication link.

A non-transitory processor-readable storage medium having one or more instructions which, when executed by at least one processor of a processing circuit, cause the processing circuit to:

• determine presence of a misalignment of a 3-wire communication link, involving two or more wires, by a receiver or a transmitter coupled to the 3-wire communication link, wherein a 3-phase signal is transmitted on all wires of the 3-wire communication link in different phases;
• and
• invert a first bit of a 3-bit symbol corresponding to a transition of signaling state of the 3-wire communication link when the misalignment of the 3-wire communication link is determined to affect phase relationships between two or more signals carried on the 3-wire communication link, and indicates an incorrect direction of phase rotation between states of the 3-phase signal at the transition of signaling state of the 3-wire communication link
• wherein inverting the first bit reverses an effect of the misalignment of the 3-wire communication link.