| 摘要 |
Universal Serial Bus active extension cable for increasing the distance between devices coupled via a Universal Serial Bus cable includes a pair of transceivers for bidirectional transmission of data therealong. A drive detector senses which terminal device is transmitting data and enables the other terminal device to receive the data. A speed detector senses which of more than one transmission speed is being used and sets the devices coupled to the cable accordingly. An end-of-packet detection determines when the transmission of a packet of data has been completed. When the system enters a suspend mode, a detector sets the components to a low power mode.
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