Clock recovery, receiver, and communication system for multiple channels

摘要

Disclosed are various exemplary embodiments of a clock recovery apparatus for recovering clock signals of multiple data channels. In one exemplary embodiment a clock recovery apparatus for a plurality of data channels may include a plurality of channel blocks, where each channel block may include a frequency detection block configured to generate an intermediate signal based on a respective data signal received from a respective data channel and a global signal, and a recovery block configured to recover a clock signal for the respective data channel in response to the respective data signal and the global signal. The apparatus may also include a global signal generation block configured to receive and combine the intermediate signals from the plurality of channel blocks to generate the global signal.

主权项

1. A clock recovery apparatus for a plurality of data channels, the apparatus comprising:
a plurality of channel blocks, each channel block comprising:
a frequency detection block configured to generate an intermediate signal based on a respective data signal received from a respective data channel and a global signal; anda recovery block configured to recover a clock signal for the respective data channel in response to the respective data signal and the global signal; and a global signal generation block configured to receive and combine the intermediate signals from the plurality of channel blocks to generate the global signal, wherein the frequency detection block in each channel block comprises:
a reference signal generator configured to generate a reference signal based on the respective data signal;a feedback signal generator configured to generate a feedback signal based on the global signal; anda frequency detector configured to generate the intermediate signal representing a frequency difference between the reference signal and the feedback signal.