Altera 10-Gbps Ethernet MAC MegaCore Function - Manual (Page 126)

Chapter 9: Interface Signals 9–7
February 2014 Altera Corporation 10-Gbps Ethernet MAC MegaCore Function User Guide
Figure 9–6 shows the reception of a 60-byte frame at the Avalon-ST receive interface
when an error occurs with an overflow and undersized frame condition.
Figure 9–6. Avalon-ST Receive with Error (Overflow and Undersized Frame)
rx_clk_clk
avalon_st_rx_ready
avalon_st_rx_valid
avalon_st_rx_startofpacket
avalon_st_rx_data[63:0]
avalon_st_rx_empty[2:0]
avalon_st_rx_error[5]
avalon_st_rx_error[4]
avalon_st_rx_error[3]
avalon_st_rx_error[2]
avalon_st_rx_error[1]
avalon_st_rx_error[0]
avalon_st_rx_endofpacket
avalon_st_rxstatus_valid
avalon_st_rxstatus_data[38:0]
avalon_st_rxstatus_error[6]
avalon_st_rxstatus_error[5]
avalon_st_rxstatus_error[4]
avalon_st_rxstatus_error[3]
avalon_st_rxstatus_error[2]
avalon_st_rxstatus_error[1]
avalon_st_rxstatus_error[0]
4 0
Overflow
Undersized
frame
Undersized
frame