SMSC FlexPWR LAN8720 - Manual (Page 58)

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Revision 1.0 (05-28-09) 58 SMSC LAN8720/LAN8720i
DATASHEET
6.2.2 RMII 10Base-T TX/RX Timings (50MHz REF_CLK IN)
6.2.2.1 10M RMII Receive Timing (50MHz REF_CLK IN)
Figure 6.4 10M RMII Receive Timing Diagram (50MHz REF_CLK IN)
Table 6.4 10M RMII Receive Timing Values (50MHz REF_CLK IN)
PARAMETER DESCRIPTION MIN TYP MAX UNITS NOTES
T9.1 Output delay from rising edge of
CLKIN to receive signals output
valid 3 10 ns
CLKIN frequency 50 MHz
Clock In -
CLKIN
Data Out -
RXD[1:0]
CRS_DV
Valid Data
T
9.1