Local interconnected network bus repeater delay compensation

An electronic device, comprising:

• an integrated circuit, wherein the integrated circuit comprises:
• an input pad or connector configured to couple to a first segment of a local interconnected network (LIN) bus;
• a receive circuit, coupled to the input pad or connector, configured to receive bits;
• a measurement circuit, coupled to the receive circuit, configured to measure:
• a rising-edge time and a falling-edge time in the bits, or a first bit time and a second bit time in the bits;
• first control logic, coupled to the measurement circuit, configured to compare the rising-edge time and the falling-edge time, or the first bit time and the second bit time;
• a transmit circuit, coupled to the receive circuit, configured to transmit the bits on an output pad or connector;
• the output pad or connector, coupled to the transmit circuit, configured to couple to a second segment of the LIN bus;
• and
• a delay circuit, coupled to the first control logic, configured to apply, based at least in part on the comparison, a delay to:
• one or more rising edges or falling edges in the bits;
• or one or more first bit times or second bit times in the bits, wherein the delay compensates for different lengths or wiring in the LIN bus or a variable number of nodes or modules in the LIN bus, and maintains a duty cycle of the bits, and
• wherein the LIN bus is associated with a vehicle and the integrated circuit is configured to perform automatic position detection in the vehicle from a set of component positions on the LIN bus.

A method for performing compensation, comprising by an integrated circuit:

• receiving, on an input pad or connector, bits associated with a first segment of a local interconnected network (LIN) bus;
• measuring:
• a rising-edge time and a falling-edge time in the bits, or a first bit time and a second bit time in the bits;
• comparing the rising-edge time and the falling-edge time, or the first bit time and the second bit time;
• selectively applying, based at least in part on the comparison, a delay to:
• one or more rising edges or falling edges in the bits;
• or one or more first bit times or second bit times in the bits, wherein the delay compensates for different lengths or wiring in the LIN bus or a variable number of nodes or modules in the LIN bus, and maintains a duty cycle of the bits;
• and
• transmitting, on an output pad or connector, the bits to a second segment of the LIN bus, and
• wherein the LIN bus is associated with a vehicle and the method further comprises performing automatic position detection in the vehicle from a set of component positions on the LIN bus.