OVER-CURRENT DETECTION FOR BUS LINE DRIVERS
First Claim
1. An electrical circuit for driving a bus, comprising:
- at least one branch coupled to at least one signal line at a termination of the bus;
a transmit data input configured to receive data that the electrical circuit drives across the bus;
a current detection unit coupled to the at least one branch, wherein the current detection unit is configured to detect a current through the at least one branch; and
an over-current determination unit coupled to both the current detection unit and the transmit data input, wherein the over-current determination unit is configured to determine an over-current condition at the at least one branch based on the current at the at least one branch and the data at the transmit data input.
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Accused Products
Abstract
An electrical circuit for driving a bus is described that includes at least one branch coupled to at least one signal line at a termination of the bus and a transmit data input configured to receive data that the electrical circuit drives across the bus. The electrical circuit also includes a current detection unit coupled to the at least one branch, which is configured to detect a current through the at least one branch. The electrical circuit also includes an over-current determination unit coupled to both the current detection unit and the transmit data input. The over-current determination unit is configured to determine an over-current condition at the at least one branch based on the current at the at least one branch and the data at the transmit data input.
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Citations
20 Claims
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1. An electrical circuit for driving a bus, comprising:
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at least one branch coupled to at least one signal line at a termination of the bus; a transmit data input configured to receive data that the electrical circuit drives across the bus; a current detection unit coupled to the at least one branch, wherein the current detection unit is configured to detect a current through the at least one branch; and an over-current determination unit coupled to both the current detection unit and the transmit data input, wherein the over-current determination unit is configured to determine an over-current condition at the at least one branch based on the current at the at least one branch and the data at the transmit data input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising:
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detecting a current through at least one branch of a driver unit coupled to a bus for driving at least one signal line of the bus; detecting a change in data at a transmit data input of the driver unit; and determining an over-current condition at the at least one branch based at least in part on the detected current and in response to the change. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A device comprising:
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means for detecting a current through at least one branch of a driver unit coupled to a bus for driving at least one signal line of the bus; means for detecting a change in data at a transmit data input of the driver unit; and means for determining an over-current condition at the at least one branch based at least in part on the detected current and in response to the change. - View Dependent Claims (18, 19, 20)
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Specification