220.127.116.11. RX Bit Slip
To use the RX bit slip, select Enable rx_bitslip port and set the word aligner mode to bit slip. This adds rx_bitslip as an input control port. An active high edge on rx_bitslip slips one bit at a time. When rx_bitslip is toggled, the word aligner slips one bit at a time on every active high edge. Assert the rx_bitslip signal for at least two parallel clock cycles to allow synchronization. You can verify this feature by monitoring rx_parallel_data.
The RX bit slip feature is optional and may or may not be enabled.