Data bus signal conditioner and level shifter

A system comprising:

• a first integrated circuit;
• a second integrated circuit;
• and
• an intermediary circuit coupled between the first and second integrated circuits, and including:
• first switches;
• signal conditioner circuitry configured to boost edges of signals during a state in which the first switches are closed;
• second switches;
• level shifter circuitry operable during a state in which the second switches are closed;
• and
• state detector and controller circuitry including:
• receiver circuitry;
• and
• a finite state machine coupled to the receiver circuitry and configured to:
• detect, from signals received at the receiver circuitry, a first data rate;
• close the first switches responsive to detecting the first data rate;
• and
• close the second switches during a second data rate.

A method comprising:

• receiving signals;
• detecting, from the signals, a first data rate;
• operating signal conditioner circuitry responsive to detecting the first data rate, for boosting edges of the signals;
• and
• operating level shifter circuitry during a second data rate, for shifting a voltage level of the signals from a first voltage level to a second voltage level.

An intermediary circuit adapted to be coupled between first and second communication devices using first and second conductors and operable to facilitate communications between the first and second communication devices, the intermediary circuit comprising:

• a state detector and controller circuit having first and second outputs and adapted to be coupled to the first and second conductors;
• a signal conditioning circuit coupled to the first output and adapted to be coupled to the first and second conductors;
• and
• a level shifter coupled to the second output and adapted to be coupled to the first and second conductors.