Conversion of a single-wire bus communication protocol

A device for communication on a single-wire bus, comprising:

• a transmit circuit configured to transmit signals according to a first protocol in which states of bits are indicated by different time periods at a first voltage level or a second voltage level lower than the first voltage level;
• and
• a protocol converter configured to convert the transmitted signals from the first protocol to a second protocol in response to an active state of a control signal, which indicates that a slave device receives power over the single-wire bus, and to not convert the transmitted signals from the first protocol to the second protocol in response to a deactivated state of the control signal, wherein states of bits in the second protocol are indicated by different time periods at the first voltage level and wherein the protocol converter is connected between the transmit circuit and the single-wire bus.

A method for communication on a single-wire bus, comprising:

• transmitting signals on the single-wire bus according to a first protocol in response to a deactivated state of a control signal, wherein states of bits according to the first protocol are indicated by different time periods at a first voltage level or a second voltage level lower than the first voltage level;
• and
• transmitting signals on the single-wire bus according to a second protocol in response to an activated state of the control signal, wherein the states of bits according to the second protocol are indicated by different time periods at the first level and wherein the activated state of the control signal indicates that a slave device receives power over the single-wire bus.