FPGA上简单的以太网接口

FPGA上实现10M以太网udp接口，最少的外部器件，直接接Rj45, 省去mac和phy芯片。

Ethernet_test
_xmsgs
_ngo
xst
xlnx_auto_0_xdb
planAhead_run_2
planAhead_run_1
iseconfig
ipcore_dir
const.vh
DCMMAIN.v
DCMMAIN_arwz.ucf
EthernetRX.v
EthernetTX.v
ethernet_test.bld
ethernet_test.cmd_log
Ethernet_test.gise
ethernet_test.ipf
ethernet_test.lso
ethernet_test.ngc
ethernet_test.ngr
ethernet_test.prj
ethernet_test.stx
ethernet_test.syr
ethernet_test.ucf
ethernet_test.v
ethernet_test.xise
ethernet_test.xst
ethernet_test_envsettings.html
ethernet_test_ngdbuild.xrpt
ethernet_test_summary.html
ethernet_test_tb_ping.v
ethernet_test_xst.xrpt
pa.fromHdl.tcl
pa.fromNetlist.tcl
planAhead.ngc2edif.log
TENBASET_RxD.v
TENBASET_TxD.v
webtalk_pn.xml
xaw2verilog.log
.Xil