Reception of the Odd Case - 16.2 English

The following figure shows the reception of the in-bound code-group stream, received either serially using the device-specific transceiver, or in parallel across the TBI, and translation of this code-group stream into the receiver GMII. This is performed by the PCS Receive Engine.

As defined in IEEE 802.3-2008 figure 36-7b, the combined /T/R/R/ sequence results in the GMII encoding of Frame Extension. This occurs for a single clock cycle following the end of frame reception; the gmii_rx_er signal is driven High and the frame extension code of 0x0F is driven onto gmii_rxd[7:0]. This occurs even in full-duplex mode.