WARP FPGA Board Ethernet

The FPGA Board has one 10/100/1000 Ethernet device present. The design uses the ​Marvell 88e1111 Gigabit Ethernet PHY. The Marvell PHY implements all the physical layer functionality and the Virtex-4 FPGA uses one of the hardened Tri-mode Ethernet MAC for the MAC layer. Any MAC layer implementation in the Virtex-4 utilizes the hard TEMAC and the soft ​LocalLink TEMAC.

There are six status LEDs (D1 - D6) which show the status of the physical layer link.

Label	LED Color	Status
Tx	Green	Lights up during packet transmission
Rx	Green	Lights up during packet reception
Duplex	Red	Indicates the successful negotiation of a duplex link
10	Red	Indicates negotiated speed of 10 Mbps
100	Red	Indicates negotiated speed of 100 Mbps
1000	Red	Indicates negotiated speed of 1 Gbps

The auto-negotiated speeds are between the physical layers of the two Ethernet devices. The Ethernet MAC must still be informed of the correct speed to use or the auto-negotiation callback must be implemented.

FPGA Constraints

# FPGA Board v2.2 constraints for gigabit Ethernet
#
# The Ethernet connector (J15) is located on the left side
#
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<0> LOC = D17 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<1> LOC = E17 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<2> LOC = K17 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<3> LOC = G15 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<4> LOC = J16 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<5> LOC = J17 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<6> LOC = H17 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TXD_0_pin<7> LOC = K16 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TX_EN_0_pin LOC = C18 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TX_ER_0_pin LOC = K18 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_TX_CLK_0_pin LOC = F21 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<0> LOC = K23 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<1> LOC = E21 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<2> LOC = E22 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<3> LOC = H22 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<4> LOC = J24 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<5> LOC = G23 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<6> LOC = E23 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RXD_0_pin<7> LOC = G21 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RX_DV_0_pin LOC = H23 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RX_ER_0_pin LOC = F23 | IOBDELAY = NONE | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_GMII_RX_CLK_0_pin LOC = J22 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_MII_TX_CLK_0_pin LOC = G22 | PERIOD = 40 ns | MAXSKEW= 1.0 ns | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_MDIO_0_pin LOC = L16 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_MDC_0_pin LOC = H15 | IOSTANDARD = LVCMOS25;
Net fpga_0_TriMode_MAC_GMII_TemacPhy_RST_n_pin LOC = C17 | IOSTANDARD = LVCMOS25 | TIG;