State change in systems having devices coupled in a chained configuration
AssigneeMicron Technology, Inc.
InventorsWilliam H. Radke, Victor Y. Tsai, James Cooke, Neal A. Galbo, Peter Feeley
Life of this patent
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Abstract
The present disclosure includes methods, devices, and systems for state change in systems having devices coupled in a chained configuration. A number of embodiments include a host and a number of devices coupled to the host in a chained configuration. The chained configuration includes at least one device that is not directly coupled to the host. The at least one device that is not directly coupled to the host is configured to change from a first communication state to a second communication state responsive to receipt of a command from the host.
Claims18
A system comprising:
- a host;
- and
- a device coupled to the host in a chained configuration, wherein the device is configured to change from a step down state to a bypass state responsive to receipt of a command, wherein in the step down state the device receives information from an upstream device in the chained configuration at a first speed and sends information to a downstream device in the chained configuration at a second speed, wherein in the bypass state the device receives information from the upstream device at the first speed and sends information to the downstream device at the first speed, wherein the device is configured to change from the bypass state to a different bypass state responsive to receipt of a second command, and wherein the second command is sent without an acknowledgement that the device changed from the step down state to the bypass state.
A method comprising:
- changing a device coupled to a host in a chained configuration from a step down state to a bypass state responsive to receiving a command, wherein in the step down state the device receives information from an upstream device in the chained configuration at a first speed and sends information to a downstream device in the chained configuration at a second speed, wherein in the bypass state the device receives information from the upstream device at the first speed and sends information to the downstream device at the first speed, wherein the device is configured to change from the bypass state to a different bypass state responsive to receipt of a second command, and wherein the second command is sent without an acknowledgement that the device changed from the step down state to the bypass state.
A system comprising:
- a device coupled to an upstream device and a downstream device in a chained configuration, wherein the device is configured to:
- receive, in a step down state, information from the upstream device at a first speed and send information to the downstream device at a second speed;
- change from the step down state to a bypass state responsive to receiving a command;
- receive, in the bypass state, information from the upstream device at the first speed and send information to the downstream device at the first speed
- change from the bypass state to a different bypass state responsive to receipt of a second command, wherein the second command is sent without an acknowledgement that the device changed from the step down state to the bypass state.
Dependencies are inferred from the claim text.