LAN8700 Datasheet, PDF (50/74 Pages) SMSC Corporation – ±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWR TM in a Small Footprint

LAN8700/LAN8700i
6.2.1.2 100M MII Transmit Timing
FIGURE 6-3:
100M MII TRANSMIT TIMING DIAGRAM
Clock Out -
TX_CLK
Data Out -
TXD[3:0]
TX_EN
TX_ER
T_3.1
Valid Data
TABLE 6-3: 100M MII TRANSMIT TIMING VALUES
Parameter
Description
MIN TYP MAX Units
T3.1
Transmit signals required setup to
12
TX_CLK rising
Transmit signals required hold after 0
TX_CLK rising
TX_CLK frequency
25
TX_CLK Duty-Cycle
40
ns
ns
MHz
%
Notes
DS00002260A-page 50
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