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7 Series GTX/GTH Transceivers: RXCDR_CFG setting for 8B10B unscrambled data at line rates > 6.6 Gbps
( UG476) The 7 Series FPGA GTX/GTH Transceivers User Guide v1.11 provides RXCDR_CFG settings for GTX/GTH for different configurations.
The GTX and GTH tables (4-19 and 4-21) provide the settings for line rates of <= 6.6 Gbps only.
However, there are some protocols that require 8B10B encoding/decoding at line rates > 6.6 Gbps such as JESD204B or CPRI.
For applications that require > 6.6 Gbps with 8B10B data, with no pre-scrambling and no SSC, the same settings as scrambled/PRBS data can be used (tables 4-17 and 4-20).