Small Footprint MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology
Datasheet
tclkp
tclkh tclkl
TXCLK
tsu thold
tsu thold
thold
TXD[3:0]
TXEN
thold
tsu
Figure 5.5 MII Transmit Timing
Table 5.9 MII Transmit Timing Values
SYMBOL
DESCRIPTION
MIN
MAX
UNITS
NOTES
tclkp
tclkh
tclkl
tsu
TXCLK period
Note 5.17
tclkp*0.4
tclkp*0.4
12.0
ns
ns
ns
ns
TXCLK high time
TXCLK low time
tclkp*0.6
tclkp*0.6
TXD[3:0], TXEN setup time to rising edge of
TXCLK
Note 5.18
Note 5.18
thold
TXD[3:0], TXEN hold time after rising edge of
TXCLK
0
ns
Note 5.17 40ns for 100BASE-TX operation, 400ns for 10BASE-T operation.
Note 5.18 Timing was designed for system load between 10 pf and 25 pf.
Revision 1.4 (08-23-12)
74
SMSC LAN8710A/LAN8710Ai
DATASHEET