Datasheet

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DP83856
6.0 Electrical Specifications (Continued)
6.8 Loopback Timing
Parameter Description Notes Min Typ Max Units
T33 TX_EN to RX_DV Loopback 10 Mb/s
100 Mb/s
1000 Mb/s
2220
380
536
ns
Note: During loopback (all modes) both the TD± outputs remain inactive by default.
GTX_CLK
TX_EN
TXD[7:0]
CRS
RX_CLK
RXD[7:0]
RX_DV
T33
Valid Data
Valid Data
TX_CLK
TXD[3:0]
RXD[3:0]