LAN8187_06 Datasheet, PDF (57/72 Pages) SMSC Corporation – ±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM

±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWR^TM
Datasheet
6.2.1.2 100M MII Transmit Timing
TX_CLK
TXD[3:0]
TX_EN
TX_ER
Valid Data
T3.1 T3.2
Figure 6.3 100M MII Transmit Timing Diagram
PARAMETER
T3.1
T3.2
Table 6.3 100M MII Transmit Timing Values
DESCRIPTION
MIN TYP MAX
Transmit signals setup to TX_CLK 12
rising
Transmit signals hold after
0
TX_CLK rising
TX_CLK frequency
25
TX_CLK Duty-Cycle
40
UNITS
ns
ns
MHz
%
6.2.2
6.2.2.1
MII 10Base-T TX/RX Timings
10M MII Receive Timing
NOTES
RX_CLK
RXD[3:0]
RX_DV
RX_ER
Valid Data
T4.1 T4.2
Figure 6.4 10M MII Receive Timing Diagram
SMSC LAN8187/LAN8187I
57
DATASHEET
Revision 1.0 (12-14-06)