A motor drive circuit includes a first serializer-deserializer (SER-DES) module that converts first SER-DES input signals into a first SER-DES output serial data stream. The first SER-DES input signals relate to motor control inputs or motor drive power outputs. A second SER-DES module converts a second SER-DES input serial data stream corresponding to the first SER-DES output serial data stream into second SER-DES output signals. The second SER-DES input signals relate to motor drive power outputs or motor control inputs. A serial isolation channel provides a galvanic isolation barrier between the first SER-DES module and the second SER-DES module. The serial isolation channel communicates the first SER-DES output serial data stream across the galvanic isolation barrier to provide the second SER-DES input serial data stream.

Methods and apparatuses to transfer data between a first device and a second device are disclosed. In various embodiments, an apparatus includes a first device and a second device. The first device includes at least one first non-differential transmitter coupled to a first channel, at least one second non-differential transmitter coupled to a second channel, and at least one differential receiver to receive a data bit and its complement on the first and second channels in parallel. The second device includes at least one first non-differential receiver coupled to the first channel, at least one second non-differential receiver coupled to the second channel, and at least one differential transmitter to transmit a data bit and its complement on the first and second channels in parallel. Other methods and apparatuses are disclosed.

A motor drive circuit includes a first serializer-deserializer (SER-DES) module that converts first SER-DES input signals into a first SER-DES output serial data stream. The first SER-DES input signals relate to motor control inputs or motor drive power outputs. A second SER-DES module converts a second SER-DES input serial data stream corresponding to the first SER-DES output serial data stream into second SER-DES output signals. The second SER-DES input signals relate to motor drive power outputs or motor control inputs. A serial isolation channel provides a galvanic isolation barrier between the first SER-DES module and the second SER-DES module. The serial isolation channel communicates the first SER-DES output serial data stream across the galvanic isolation barrier to provide the second SER-DES input serial data stream.

Various example embodiments herein provide methods, circuits, and systems, for controlling a multicycle path in a serializer interface. The method includes determining a desired delay window of a multicycle data path in a serializer interface by sampling at least one step response from serializer delay replica circuitry at an edge of a first clock signal and a gating signal, in response to synchronizing a second clock signal with a negative edge of the first clock signal, configuring a polarity of a latch in a subsequent serializer of a serializer chain based on the determined desired delay window, and controlling the multicycle data path in the serializer interface based on the configured polarity of the latch in the subsequent serializer of the serializer chain.

Methods and apparatus to transfer data between a first device and a second device, is disclosed. An apparatus according to various embodiments may comprise a first device and a second device. The first device may comprise at least one first non-differential transmitter coupled to a first channel, at least one second non-differential transmitter coupled to a second channel, and at least one differential receiver to receive a data bit and its complement on the first and second channels in parallel. The second device may comprise at least one first non-differential receiver coupled to the first channel, at least one second non-differential receiver coupled to the second channel, and at least one differential transmitter to transmit a data bit and its complement on the first and second channels in parallel.

Methods and apparatus apparatuses to transfer data between a first device and a second device are disclosed. In various embodiments, an apparatus includes a first device and a second device. The first device includes at least one first non-differential transmitter coupled to a first channel, at least one second non-differential transmitter coupled to a second channel, and at least one differential receiver to receive a data bit and its complement on the first and second channels in parallel. The second device includes at least one first non-differential receiver coupled to the first channel, at least one second non-differential receiver coupled to the second channel, and at least one differential transmitter to transmit a data bit and its complement on the first and second channels in parallel. Other methods and apparatuses are disclosed.

Various example embodiments herein provide methods, circuits, and systems, for controlling a multicycle path in a serializer interface. The method includes determining a desired delay window of a multicycle data path in a serializer interface by sampling at least one step response from serializer delay replica circuitry at an edge of a first clock signal and a gating signal, in response to synchronizing a second clock signal with a negative edge of the first clock signal, configuring a polarity of a latch in a subsequent serializer of a serializer chain based on the determined desired delay window, and controlling the multicycle data path in the serializer interface based on the configured polarity of the latch in the subsequent serializer of the serializer chain.