Standby mode for use in a device having a multiple channel physical layer
Granted 24 Sep 2013 · 8 office actions
Current assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED · originally Broadcom
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Inventors: John Creigh, Kevin Brown, Richard G. Thousand · Examiner: Barry Taylor · AU 2646 · TC 2600
Life of the patent
4 dated eventsAbstract
The present invention provides a way of placing a physical layer device into a standby mode. After a link is established between multiple devices, a determination is made whether the device has data to transmit or whether a standby request was received from a link partner. If a standby request was received or the device has no data to transmit, standby mode is entered. In standby mode, unneeded circuitry is powered down. A transmitter in a channel and a receive path in a separate channel remain powered. While operating in standby mode, the PHY layer continuously transmits a standby code on the one or more channels that are not powered down. Standby mode is discontinued when a transceiver has data to transmit or when energy is detected on the powered down channels. Standby mode is also discontinued when no standby code is received, indicating a disconnect between devices.
Claims
26 · 7 independent · depth 6Classifications
4 codes- H04B7/216
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2 priority documents›Priority documents — 2
| Type | Document | Date |
|---|---|---|
| provisional | US 60484326 | 3 Jul 2003 |
| related publication | US 20050030808 A1 | 10 Feb 2005 |
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