SMSC flexpwr lan8720 Manual De Usuario
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
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