Communication method, corresponding system and device

A system, comprising:

• a first transceiver;
• a second transceiver;
• and
• a galvanic isolation link coupled between the first circuit and the second circuit, wherein, in operation:
• the first transceiver transmits first data signals to the second transceiver via the galvanic isolation link;
• and
• the second transceiver transmits, via the galvanic isolation link, second data signals to the first transceiver in response to the first data signals, wherein:
• the data signals are transmitted in consecutive time slots of a determined time duration via a galvanic isolation link coupled between the first circuit and the second circuit;
• the first data signals include:
• polling signals transmitted from the first transceiver to the second transceiver during consecutive time slots;
• and
• on-demand access requests transmitted from the first transceiver to the second transceiver;
• and
• the second data signals include:
• status response signals transmitted from the second transceiver to the first transceiver in response to polling signals received from the first transceiver;
• and
• access response signals transmitted from the second transceiver to the first transceiver in response to access requests received from the first transceiver, wherein the second transceiver, in operation:
• stores a response to an access request;
• transmits a status response signal before transmission of an access response signal associated with the stored response;
• and
• transmits, after the transmission of the status response signal, the access response signal associated with the stored response.

A transceiver, comprising:

• control circuitry, which, in operation, couples to a processor;
• and
• an interface, which, in operation, couples the transceiver to a second transceiver via a galvanic isolation link, wherein, the transceiver, in operation:
• transmits first data signals to the second transceiver via the galvanic isolation link;
• and
• receives, from the second transceiver and via the galvanic isolation link, second data signals in response to the first data signals, wherein:
• the data signals are transmitted in consecutive time slots of a determined time duration via a galvanic isolation link;
• the first data signals include:
• polling signals transmitted from the transceiver to the second transceiver during consecutive time slots;
• and
• on-demand access requests transmitted from the transceiver to the second transceiver;
• and
• the second data signals include:
• status response signals transmitted from the second transceiver to the transceiver in response to polling signals;
• and
• access response signals transmitted from the second transceiver to the transceiver in response to access requests, wherein the transceiver, in operation, sends a busy state signal to the processor, the busy state signal indicating pending reception of the status response signal.

A transceiver, comprising:

• control circuitry, which, in operation, couples to a high-voltage device;
• and
• an interface, which, in operation, couples the transceiver to a second transceiver via a galvanic isolation link, wherein, the transceiver, in operation, responds to first data signals received from the second transceiver via the galvanic isolation link by transmitting second data signals in response to the first data signals, wherein:
• the data signals are transmitted in consecutive time slots of a determined time duration via a galvanic isolation link;
• the first data signals include:
• polling signals transmitted from the second transceiver to the transceiver during consecutive time slots;
• and
• on-demand access requests transmitted from the second transceiver to the transceiver;
• and
• the second data signals include:
• status response signals transmitted from the transceiver to the second transceiver in response to polling signals;
• and
• access response signals transmitted from the transceiver to the second transceiver in response to access requests, wherein the transceiver, in operation:
• stores a response to an access request;
• transmits a status response signal before transmission of an access response signal associated with the stored response;
• and
• transmits, after the transmission of the status response signal, the access response signal associated with the stored response.

A non-transitory computer-readable medium having contents which configure a communication system to perform a method, the method comprising:

• transmitting first data signals from a first circuit to a second circuit of the communication system;
• and
• transmitting second data signals from the second circuit to the first circuit in response to the first data signals, wherein:
• the data signals are transmitted in consecutive time slots of a determined time duration via a galvanic isolation link coupled between the first circuit and the second circuit;
• the first data signals include:
• polling signals transmitted from the first circuit to the second circuit during consecutive time slots;
• and
• on-demand access requests transmitted from the first circuit to the second circuit;
• and
• the second data signals include:
• status response signals transmitted from the second circuit to the first circuit in response to polling signals received from the first circuit;
• and
• access response signals transmitted from the second circuit to the first circuit in response to access requests received from the first circuit, wherein the method comprises:
• storing, in the second circuit, a response to an access request;
• transmitting, by the second circuit, of a status response signal before transmission of an access response signal associated with the stored response;
• and
• transmitting, by the second circuit after the transmission of the status response signal, the access response signal associated with the stored response.