To enable the 8B/10B encoder, TX_8B10B_EN must be driven High. The TX 8B/10B encoder allows byte interleaved data to bypass the encoder on a per-byte basis. When TX_8B10B_EN is driven Low, all encoders are turned off and no data from CH*_TXDATA can be encoded. When TX_8B10B_EN is High, driving a bit from TX_8B10B_BYPASS High can make the corresponding byte channel from TXDATA bypass 8B/10B encoding. When the encoder is turned off, the operation of the TXDATA port is as described in the TX interface.