Low power, high bandwidth, low latency data bus

A system comprising:

• a master device coupled to a multi-drop bus for digital communications comprising audio data and control signals using a communications protocol comprising a plurality time slots;
• and
• a first slave device coupled to the multi-drop bus and configured to transmit and receive digital communications with the master device over the multi-drop bus in accordance with the communications protocol;
• wherein at least one of the time slots is used to define a communications configuration for the first slave device to dynamically optimize bandwidth and/or signal integrity, and
• wherein delays between devices are measured by charging the bus to a known value, disabling drivers at a beginning and an end of the bus to cause the bus to be floating and not terminated during measurement, waiting for the devices to change a level on the bus, and measuring a transition delay.

A system comprising:

• a master device coupled to a multi-drop bus for digital communications comprising audio data and control signals using a communications protocol comprising a plurality time slots;
• and
• a first slave device coupled to the multi-drop bus and configured to transmit and receive digital communications with the master device over the multi-drop bus in accordance with the communications protocol;
• wherein at least one of the time slots is used to define a communications configuration for the first slave device to dynamically optimize bandwidth and/or signal integrity, and
• wherein the system timing is obtained from a fractional phase locked loop (PLL) disposed in the master device and/or the first slave device and the PLL is dithered by adding an output from a pseudorandom generator to a fractional adder thereby reducing electromagnetic interference.

A system comprising:

• a master device coupled to a multi-drop bus for digital communications comprising audio data and control signals using a communications protocol comprising a plurality time slots;
• and
• a first slave device coupled to the multi-drop bus and configured to transmit and receive digital communications with the master device over the multi-drop bus in accordance with the communications protocol;
• wherein at least one of the time slots is used to define a communications configuration for the first slave device to dynamically optimize bandwidth and/or signal integrity, and
• wherein a pseudorandom generator is configured to scramble an output of one or more data ports thereby enabling a lower electromagnetic interference by whitening an output spectrum.