
Micrel, Inc.
KSZ8051MNL/RNL
July 2010
47
M9999-070910-1.0
MII Transmit Timing (10Base-T)
Figure 10. MII Transmit Timing (10Base-T)
Timing Parameter
Description
Min
Typ
Max
Unit
tP
TXC period
400
ns
tWL
TXC pulse width low
200
ns
tWH
TXC pulse width high
200
ns
tSU1
TXD[3:0] setup to rising edge of TXC
120
ns
tSU2
TXEN setup to rising edge of TXC
120
ns
tHD1
TXD[3:0] hold from rising edge of TXC
0
ns
tHD2
TXEN hold from rising edge of TXC
0
ns
tCRS1
TXEN high to CRS asserted latency
200
ns
tCRS2
TXEN low to CRS de-asserted latency
550
ns
Table 11. MII Transmit Timing (10Base-T) Parameters