Digital power on reset controller
AssigneeBroadcom Corporation
InventorsJiunn-Ming Ju, Cheng-Liang Hou
Life of this patent
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Abstract
A digital power-on reset circuit for an electronic device includes at least one reset register and a comparator circuit. The power-on reset circuit is incorporated into the electronic device and the comparator circuit is configured to compare values in the at least one reset register with at least one predetermined value when a power-on reset state is determined and generate a reset signal when the values do not match the at least one predetermined value.
Claims20
A digital power-on reset circuit for an electronic device, the digital power-on reset circuit comprising:
- a reset memory element;
- and
- a comparator circuit configured to:
- during a power-on event, compare a value stored in the reset memory element with a predetermined value, and
- generate, in response to the power-on event, a reset signal when the value stored in the reset memory element does not match the predetermined value, and
- maintain the reset signal for a predetermined period of time.
A method of resetting an electrical device comprising:
- determining an occurrence of a power-on event;
- comparing a value stored in a reset memory element with a predetermined value;
- generating a reset signal when the predetermined value is not equal to the value stored in the reset memory element;
- and
- maintaining the reset signal for a predetermined period of time.
A digital reset circuit for an electronic device, the digital reset comprising:
- a determining means for determining an occurrence of a resettable event;
- a comparing means for comparing a value stored in a memory element to a predetermined value;
- and
- a generating means for, when the predetermined value is not equal to the value stored in the memory element and in response to the resettable event, generating a reset signal for a predetermined period of time.
Dependencies are inferred from the claim text.