
Micrel, Inc.
KSZ8041NL/RNL
September 2010
45
M9999-090910-1.4
MII Transmit Timing (100Base-TX)
Figure 12. MII Transmit Timing (100Base-TX)
Timing Parameter
Description
Min
Typ
Max
Unit
tP
TXC period
40
ns
tWL
TXC pulse width low
20
ns
tWH
TXC pulse width high
20
ns
tSU1
TXD[3:0] setup to rising edge of TXC
10
ns
tSU2
TXEN setup to rising edge of TXC
10
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
34
ns
tCRS2
TXEN low to CRS de-asserted latency
33
ns
Table 10. MII Transmit Timing (100Base-TX) Parameters