220.127.116.11.1. 8B/10B Decoder Control Code Encoding
The 8B/10B decoder indicates whether the decoded 8-bit code group is a data or control code group on rx_datak . If the received 10-bit code group is one of the 12 control code groups (/Kx.y/) specified in the IEEE 802.3 specification, rx_datak is driven high. If the received 10-bit code group is a data code group (/Dx.y/), rx_datak is driven low.
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