Cyclone V Device Handbook: Volume 2: Transceivers

ID 683586
Date 10/24/2018
Public
Document Table of Contents

1.3.2.3.3. Control Code Group Detection

The 8B/10B decoder indicates whether the decoded 8-bit code group is a data or a control code group on the rx_datak signal. If the received 10-bit code group is one of the 12 control code groups (/Kx.y/) specified in the IEEE802.3 specification, the rx_datak signal is driven high. If the received 10-bit code group is a data code group (/Dx.y/), the rx_datak signal is driven low.