LAN8187_06 Datasheet, PDF (60/72 Pages) SMSC Corporation – ±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWRTM

6.3.1.2
±15kV ESD Protected MII/RMII Fast-Ethernet PHY with HP Auto-MDIX and SMSC flexPWR^TM
Datasheet
100M RMII Transmit Timing
REF_CLK
TXD[1:0]
TX_EN
Valid Data
T8.1
T8.2
Figure 6.7 100M RMII Transmit Timing Diagram
Table 6.7 100M RMII Transmit Timing Values
PARAMETER
DESCRIPTION
MIN TYP MAX UNITS
T8.1
Transmit signals setup to rising
4
ns
edge of REF_CLK
T8.2
Transmit signals hold after rising
edge of REF_CLK
2
ns
REF_CLK frequency
50
MHz
6.3.2
6.3.2.1
RMII 10Base-T TX/RX Timings
10M RMII Receive Timing
NOTES
REF_CLK
RXD[1:0]
CRS_DV
Valid Data
T9.1 T9.2
Figure 6.8 10M RMII Receive Timing Diagram
Revision 1.0 (12-14-06)
60
DATASHEET
SMSC LAN8187/LAN8187I