Circuit connectivity and conveyance of power status information

A system comprising:

• first circuitry;
• second circuitry, the second circuitry communicatively coupled to receive communications over a communication link from the first circuitry;
• and
• the first circuitry including a monitor circuit, the monitor circuit monitoring a voltage rail inputted to power the first circuitry, the monitor circuit controlling transmission of communications over the communication link to the second circuitry depending upon a magnitude of the voltage rail;
• and
• wherein the second circuitry includes a voltage analyzer circuit to analyze a voltage level of the communications received over the communication link from the first circuitry, the voltage analyzer circuit utilizing the voltage level of the communications received over the communication link to produce status information indicating whether the magnitude of the voltage rail is above a threshold value.

A system comprising:

• first circuitry;
• second circuitry, the second circuitry communicatively coupled to receive communications over a communication link from the first circuitry;
• and
• the first circuitry including a monitor circuit, the monitor circuit monitoring a voltage rail inputted to power the first circuitry, the monitor circuit controlling transmission of communications over the communication link to the second circuitry depending upon a magnitude of the voltage rail;
• and
• wherein the second circuitry includes a control signal generator, the control signal generator configured to generate a control signal for transmission over the communication link to a receiver circuit in the first circuitry.