DATA PROCESSING SYSTEM WITH PROTOCOL DETERMINATION CIRCUITRY
First Claim
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1. A semiconductor device comprising:
- a processing system including a section of power domain circuitry and a section of coin cell power domain circuitry, wherein the coin cell power domain circuitry is configured to;
when power is initially provided to the coin cell power domain circuitry, using power provided by a power management circuit as feedback todetermine that the power management circuit provides the power in response to a power request signal being a toggle signal, anddetermine that the power management circuit provides the power in response to the power request signal being a pulse signal.
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Abstract
A semiconductor device includes a processing system including a section of power domain circuitry and a section of coin cell power domain circuitry. The coin cell power domain circuitry is configured to, when power is initially provided to the coin cell power domain circuitry, using power provided by a power management circuit as feedback to determine that the power management circuit provides the power in response to a power request signal being a toggle signal, and determine that the power management circuit provides the power in response to the power request signal being a pulse signal.
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Citations
20 Claims
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1. A semiconductor device comprising:
a processing system including a section of power domain circuitry and a section of coin cell power domain circuitry, wherein the coin cell power domain circuitry is configured to; when power is initially provided to the coin cell power domain circuitry, using power provided by a power management circuit as feedback to determine that the power management circuit provides the power in response to a power request signal being a toggle signal, and determine that the power management circuit provides the power in response to the power request signal being a pulse signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A semiconductor device comprising:
coin cell power domain circuitry configured to; receive power provided by a power management circuit; use the power as feedback to determine whether the power management circuit uses a toggle signal or a pulse signal to supply the power; provide the toggle signal at an output pad when the power management circuit uses the toggle signal; and provide the pulse signal at the output pad when the power management circuit uses the pulse signal. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method comprising:
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receiving, in coin cell power domain circuitry, power provided by a power management circuit; testing, in the coin cell power domain circuitry, different combinations of the power and a power request signal to determine a signaling protocol used by the power management circuit to supply the power; and providing the power request signal based on the signaling protocol at an output pad coupled to the coin cell power domain circuitry. - View Dependent Claims (20)
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Specification