40G Signaling - 2.1 English

Versal Devices Integrated 100G Multirate Ethernet MAC Subsystem Product Guide (PG314)

Document ID: PG314
Release Date: 2023-07-11
Version: 2.1 English

40G operation is only supported on Port 0. The bus can operate in 128/256-bit modes.

Table 1. 40G Non-Segmented Signaling for 128 Bits
Client	Direction	Function	Signaling
0	RX	valid last data[63:0] data[127:64] tkeep[7:0] tkeep[15:8] err preempt resume preamble_out	rx_axis_tvalid_0 rx_axis_tlast_0 rx_axis_tdata0[63:0] rx_axis_tdata1[63:0] rx_axis_tkeep_user_0[7:0] rx_axis_tkeep_user_1[7:0] rx_axis_tkeep_user_0[8] rx_axis_tkeep_user_0[9] rx_axis_tkeep_user_0[10] rx_preambleout_0[55:0]
0	TX	ready valid last data[63:0] data[127:64] tkeep[7:0] tkeep[15:8] err preempt resume preamble_in	tx_axis_tready_0 tx_axis_tvalid_0 tx_axis_tlast_0 tx_axis_tdata0[63:0] tx_axis_tdata1[63:0] tx_axis_tkeep_user_0[7:0] tx_axis_tkeep_user_1[7:0] tx_axis_tkeep_user_0[8] tx_axis_tkeep_user_0[9] tx_axis_tkeep_user_0[10] tx_axis_preamblein_0[55:0]

Table 2. 40G Non-Segmented Signaling for 256 Bits
Client	Direction	Function	Signaling
0	RX	valid last data[63:0] data[127:64] data[191:128] data[255:192] tkeep[7:0] tkeep[15:8] tkeep[23:16] tkeep[31:24] err preempt resume preamble_out	rx_axis_tvalid_0 rx_axis_tlast_0 rx_axis_tdata0[63:0] rx_axis_tdata1[63:0] rx_axis_tdata2[63:0] rx_axis_tdata3[63:0] rx_axis_tkeep_user_0[7:0] rx_axis_tkeep_user_1[7:0] rx_axis_tkeep_user_2[7:0] rx_axis_tkeep_user_3[7:0] rx_axis_tkeep_user_0[8] rx_axis_tkeep_user_0[9] rx_axis_tkeep_user_0[10] rx_preambleout_0[55:0]
0	TX	ready valid last data[63:0] data[127:64] data[191:128] data[255:192] tkeep[7:0] tkeep[15:8] tkeep[23:16] tkeep[31:24] err preempt resume preamble_in	tx_axis_tready_0 tx_axis_tvalid_0 tx_axis_tlast_0 tx_axis_tdata0[63:0] tx_axis_tdata1[63:0] tx_axis_tdata2[63:0] tx_axis_tdata3[63:0] tx_axis_tkeep_user_0[7:0] tx_axis_tkeep_user_1[7:0] tx_axis_tkeep_user_2[7:0] tx_axis_tkeep_user_3[7:0] tx_axis_tkeep_user_0[8] tx_axis_tkeep_user_0[9] tx_axis_tkeep_user_0[10] tx_axis_preamblein_0[55:0]