Hello everyone, In general, we (Mentor) don't object the changes in red in the latest revision of BIRD 123. The natural suggestion however is to also add that: - if Rx_Clock_Recovery_Dj is specified then neither of Rx_Clock_Recovery_Sj or Rx_Clock_Recovery_DCD should be present (or will be ignored) because the first includes their effect - likewise: if Rx_Dj is specified then neither of Rx_ Sj or Rx_ DCD should be present (or will be ignored) because the first includes their effect Thanks, Arpad =============================================================================