JAJSEY1C April 2019 – March 2022 ADC12DJ5200RF
The JESD204C physical layer consists of a current mode logic (CML) output driver and receiver. The receiver consists of a clock detection and recovery (CDR) unit to extract the data clock from the serialized data stream and can contain a continuous time linear equalizer (CTLE) and/or discrete feedback equalizer (DFE) to correct for the low-pass response of the physical transmission channel. Likewise, the transmitter can contain pre-equalization to account for frequency dependent losses across the channel. The total reach of the SerDes links depends on the data rate, board material, connectors, equalization, noise and jitter, and required bit-error performance. The SerDes lanes do not have to be matched in length because the receiver aligns the lanes during the initial lane alignment sequence.