SMSC flexpwr lan8720i Manual De Usuario
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Revision 1.0 (05-28-09)
62
SMSC LAN8720/LAN8720i
DATASHEET
6.3.2
RMII 10Base-T TX/RX Timings (50MHz REF_CLK OUT)
6.3.2.1
10M RMII Receive Timing (50MHz REF_CLK OUT)
Figure 6.8 10M RMII Receive Timing Diagram (50MHz REF_CLK OUT)
Table 6.8 10M RMII Receive Timing Values (50MHz REF_CLK OUT)
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
NOTES
T13.1
Output delay from rising edge of
REFCLKO to receive signals
output valid
REFCLKO to receive signals
output valid
1.5
5
ns
REFCLKO frequency
50
MHz
REFCLKO
Data Out -
RXD[1:0]
CRS_DV
Valid Data
T
13.1