LAN8810I-AKZE Datasheet, PDF (94/100 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support

GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
TXCLK
TXD[3:0]
t_hold
TXEN
t_clkp
t_clkh t_clkl
t_su t_hold
t_su t_hold
Figure 5.8 MII Transmit Timing
t_hold
t_su
Table 5.17 MII Transmit Timing Values
SYMBOL
t_clkp
t_clkh
t_clkl
t_su
t_hold
DESCRIPTION
TXCLK period
TXCLK high time
TXCLK low time
TXD[3:0], TXEN setup time to rising edge of
TXCLK
TXD[3:0], TXEN hold time after rising edge of
TXCLK
MIN
Note 5.25
t_clkp*0.4
t_clkp*0.4
12.0
0
MAX
t_clkp*0.6
t_clkp*0.6
UNITS
ns
ns
ns
ns
NOTES
Note 5.26
ns
Note 5.26
Note 5.25 40ns for 100BASE-TX operation, 400ns for 10BASE-T operation.
Note 5.26 Timing was designed for system load between 10 pf and 25 pf.
Revision 1.0 (02-06-13)
94
DATASHEET
SMSC LAN8810/LAN8810i