RGMII信号测试

RGMII is just GMII with multiplexed signals
to send TX_EN or TX_ER,
the TX_CTL is active at same time as TXD
this allows sending ofTX_EN, TX_ER
control encoding is
CTL(rising/falling), DV, ER, D(4 bits rising, 4 bits falling edge clock)
0/0,0,0,xxxY-> Y=link status
0/0,0,0xYYx->RXC clock speed00=2.5,01=25,10=125,11=rsvd
0/0,0,0Yxxx, where Y=0->HDX, Y=1 -> FDX
0/1,0,1FF-> carrier sense
1/0,1,100-FF-> data error
1/1,1,000-FF-> normal data
or you can take a look at xilinx ip doc
pg160-gmii-to-rgmii.pdf (page 30 or so)



I think there is an RGMII spec floating around here if not then find a PHY or MAC vendor

http://www.google.com/url?sa=t&a ... amp;bvm=bv.76802529,d.cGE