LAN8710A Datasheet, PDF (74/82 Pages) SMSC Corporation – Small Footprint MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR Technology

Small Footprint MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR^® Technology
Datasheet
TXCLK
TXD[3:0]
t_hold
TXEN
t_clkp
t_clkh t_clkl
t_su t_hold
t_su t_hold
Figure 5.5 MII Transmit Timing
t_hold
t_su
Table 5.9 MII Transmit Timing Values
SYMBOL
DESCRIPTION
t_clkp
TXCLK period
t_clkh
TXCLK high time
t_clkl
TXCLK low time
t_su
TXD[3:0], TXEN setup time to rising edge of
TXCLK
t_hold
TXD[3:0], TXEN hold time after rising edge of
TXCLK
MIN
Note 5.17
t_clkp*0.4
t_clkp*0.4
12.0
0
MAX
t_clkp*0.6
t_clkp*0.6
UNITS NOTES
ns
ns
ns
ns
Note 5.18
ns
Note 5.18
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
DATASHEET
SMSC LAN8710A/LAN8710Ai