K Characters

Versal Adaptive SoC GTY and GTYP Transceivers Architecture Manual (AM002)

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1.3 English

The 8B/10B table includes special characters (K characters) that are often used for control functions. CH*_TXCTRL2 ports are used to indicate if data on TXDATA are K characters or regular data. The 8B/10B encoder checks received CH*_TXDATA bytes to match any K character if corresponding CH*_TXCTRL2 bit is driven High.

Figure 1. 8B10B Bit and Byte Ordering