Method and circuit for establishing network connection

摘要

The present invention discloses a network connection establishing method capable of preventing a link procedure from being strangled in a training state. An embodiment of the method comprises: a preceding step; a training step; and a following step. Said training step includes at least one of the following: counting a number, and returning to the preceding step if a local receiver is not yet ready after finishing counting the number; detecting a reception signal according to a signal detection level, and returning to the preceding step when none of the reception signal is detected; determining a number of level(s) of the reception signal, and returning to the preceding step if the number of level(s) is less than an expected level number; and comparing a signal-to-noise ratio of the reception signal with a signal-to-noise threshold, and returning to the preceding step when the signal-to-noise ratio fails to satisfy the signal-to-noise threshold.

主权项

1. A circuit for establishing network connection, capable of preventing a link procedure from being strangled in a training state, comprising a physical layer circuit (PHY), a counting unit operable to count a number during the training state and make the PHY return to a Slave Silent step of BroadR-Reach technology if a local receiver is not ready after finishing counting the number, and all of the following units:
a detecting unit operable to detect a reception signal according to a signal detection level during the training state, and make the PHY return to the Slave Silent step if none of the reception signal is detected; a determining unit operable to determine a number of level(s) of the reception signal during the training state, and make the PHY return to the Slave Silent step if the number of level(s) is less than an expected level number; and a comparing unit operable to compare a signal-to-noise ratio of the reception signal with a signal-to-noise threshold during the training state, and make the PHY return to the Slave Silent step if the signal-to-noise ratio fails to satisfy the signal-to-noise threshold.