| 摘要 |
Channel equalization in a 1000BASE-T receiver is performed by a fixed mode analog filter 2 suitable for the longest possible cable length, by a FFE ( 3 ), and by a digital filter 4 . The digital filter ( 4 ) has two sets of taps. One set is optimal for shorter cable lengths and so cancels adaptation for long cable lengths and assists operation of the analog filter. A decision block ( 5 ) selects an appropriate set of taps.
|
