currant
Junior Member
Offline
Posts: 31
|
Hello, after a long work on another theme, I returned to the 100 Mbit/s Ethernet project. I corrected binary-to-MLT-3 converter, and after applying BLW worst-case test pattern to the input of 4b/5b converter I saw a 53 bit time zero on output of scrambler. But I see baseline drift only if scrambler out connects directly to bin-to-MLT-3 converter. In my structure after scrambler there is a NRZ-to-NRZI converter, as in datasheet of NS DP83816 and when I apply output of NRZ-to-NRZI block to input of bin-to-MLT-3 there is no any significant baseline drift. Does anybody know, Do I need a NRZ-to-NRZI converter between scrambler and bin-to-MLT-3 converter? Many Thanks.
|