System and method of controlling communication interface to avoid power distribution resonance conflict

A resonance avoidance system, comprising:

• a power distribution network configured to distribute supply voltage, wherein the power distribution network has a power distribution network resonance;
• and
• processing circuitry coupled to the power distribution network, comprising:
• a driver that drives transactions onto a communication interface;
• and
• a resonance avoidance controller that is configured to insert a delay between sequential transactions separated by an inactive period to avoid stimulating the power distribution network resonance,
• wherein the resonance avoidance controller is configured to retrieve operational timing values from a configuration circuit, to use the operational timing values to calculate a time interval between respective start times of first and second transactions, and to detect a resonance conflict based on comparing the time interval with a resonant frequency period value.

A resonance avoidance system, comprising:

• a power distribution network configured to distribute supply voltage, wherein the power distribution network has a power distribution network resonance;
• and
• processing circuitry coupled to the power distribution network, comprising:
• a driver that drives transactions onto a communication interface;
• and
• a resonance avoidance controller that is configured to insert a delay between sequential transactions separated by an inactive period to avoid stimulating the power distribution network resonance,
• wherein the resonance avoidance controller is configured to retrieve operational timing values from a configuration circuit, to use the operational timing values to calculate an effective frequency of stimulation based on a time interval between start times of first and second transactions, and to detect a resonance conflict based on comparing the effective frequency of stimulation with a resonant frequency period value.

A processing system, comprising:

• a printed circuit board;
• a power regulator provided on the PCB that drives a supply voltage via a power distribution network, wherein the power distribution network has a resonant frequency;
• a communication interface provided on the PCB;
• and
• processing circuitry coupled to the power distribution network, comprising:
• a driver that drives sequential commands onto the communication interface;
• and
• a resonance avoidance controller that is configured to insert a delay between sequential transactions separated by an inactive period to avoid a resonance conflict between an effective frequency of the sequential transactions and the resonant frequency of the power distribution network,
• wherein the resonance avoidance controller is configured to insert the delay by delaying a second transaction from being driven onto the communication interface after a first transaction.

A processing system, comprising:

• a printed circuit board;
• a power regulator provided on the PCB that drives a supply voltage via a power distribution network, wherein the power distribution network has a resonant frequency;
• a communication interface provided on the PCB;
• and
• processing circuitry coupled to the power distribution network, comprising:
• a driver that drives sequential commands onto the communication interface;
• and
• a resonance avoidance controller that is configured to insert a delay between sequential transactions separated by an inactive period to avoid a resonance conflict between an effective frequency of the sequential transactions and the resonant frequency of the power distribution network,
• wherein the resonance avoidance controller is configured to retrieve operational timing values from a configuration circuit, to use the operational timing values to calculate a time interval between respective start times of first and second transactions, and to detect the resonance conflict based on comparing the time interval with a resonant frequency period value.

A method of avoiding stimulation of a power distribution network resonance, comprising:

• detecting a resonance conflict between the power distribution network resonance and an effective frequency of sequential transactions on a communication interface separated by an inactive period;
• and
• inserting a delay between the sequential transactions to avoid stimulating the power distribution network resonance,
• wherein the inserting a delay comprises delaying a second transaction from being driven onto the communication interface after a first transaction when a time interval between respective start times of the first and second transactions separated by the inactive period is within a predetermined separation time of a period of the power distribution network resonance.

A method of avoiding stimulation of a power distribution network resonance, comprising:

• detecting a resonance conflict between the power distribution network resonance and an effective frequency of sequential transactions on a communication interface separated by an inactive period;
• and
• inserting a delay between the sequential transactions to avoid stimulating the power distribution network resonance,
• wherein the detecting a resonance conflict comprises:
• retrieving operational timing values from a configuration circuit;
• using the operational timing values to calculate a time interval between respective start times of first and second transactions;
• and
• comparing the time interval with a resonant frequency period value.