Patent ID: 8279915
Filing Date: 2012-10-02
Classification: H04L

Abstract:
1. In a link partner using a plurality of voltage gain taps, a method for ordering tap setting modifications while avoiding minimum and maximum limitations, the method comprising: providing a link partner (LP) transmitter having a signal input, a plurality of parallel selectable voltage gain taps connected to the signal input, including a non-delayed pre-tap, a center tap with a delay of one unit, and a post-tap with a delay of 2 units, and a network-connected output to supply the sum of the taps; and, sending messages from a network-connected local device (LD) directing the LP to increase a difference between a selected tap gain setting and a zero tap setting n number of steps, where n≧1 and x is initially=zero, where the tap is selected from the group consisting of the pre-tap and the post-tap, and where the LP increases the difference as follows: prior to increasing the selected tap gain setting, decreasing the gain setting of the center tap two steps in iteration x; increasing the selected tap gain setting difference one step in iteration x, when a minimum/maximum limitation has not been signaled in response to decreasing the center tap gain setting two steps: as a final step in iteration x, increasing the center tap gain setting until a limit signal is received; adding 1 to x; and, when x is not equal to n, performing another iteration.