lan8720 Standard Microsystems Corp., lan8720 Datasheet - Page 61
lan8720
Manufacturer Part Number
lan8720
Description
Small Footprint Rmii 10/100 Ethernet Transceiver With Hp Auto-mdix Support
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN8720.pdf
(78 pages)
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Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
SMSC LAN8720/LAN8720i
6.3.1.2
PARAMETER
T12.1
T12.2
REFCLKO
TXD[1:0]
Data In -
TX_EN
100M RMII Transmit Timing (50MHz REF_CLK OUT)
Transmit signals required setup to
rising edge of REFCLKO
Transmit signals required hold
after rising edge of REFCLKO
REFCLKO frequency
Figure 6.7 100M RMII Transmit Timing Diagram (50MHz REF_CLK OUT)
Table 6.7 100M RMII Transmit Timing Values (50MHz REF_CLK OUT)
DESCRIPTION
T
12.1
DATASHEET
Valid Data
T
MIN
61
2.5
12.2
7
TYP
50
MAX
UNITS
MHz
ns
ns
Revision 1.0 (04-15-09)
NOTES
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