F-Tile Architecture and PMA and FEC Direct PHY IP User Guide

ID 683872
Date 10/02/2023
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3.8.7. Run-time Reset Sequence—RX

Figure 86. Run-time Reset Sequence—RX

The figure above illustrates the following run-time RX reset sequence:

  1. Assert rx_reset.
  2. rx_ready deasserts, indicating that the RX datapath is no longer operational.
  3. rx_is_lockedtodata deasserts.
  4. rx_reset_ack asserts, indicating that the RX datapath is fully in reset.
  5. You then deassert rx_reset to bring RX out of reset.
  6. rx_is_lockedtoref asserts as the CDR locks to the reference clock.
  7. rx_is_lockedtoref deasserts and rx_is_lockedtodata asserts as the CDR locks to the recovered data.
  8. rx_ready asserts.