Datasheet

Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
August
19, 2015 57
Revision 1.4
MII Transmit Timing (100Base-TX)
Figure 14. MII Transmit Timing (100Base-TX)
Table 16. MII Transmit Timing (100Base-TX) Parameters
Timing Parameter Description Min. Typ. Max. Units
t
P
TXC period 40 ns
t
WL
TXC pulse width low 20 ns
t
WH
TXC pulse width high 20 ns
t
SU1
TXD[3:0] setup to rising edge of TXC 10 ns
t
SU2
TXEN setup to rising edge of TXC 10 ns
t
HD1
TXD[3:0] hold from rising edge of TXC 0 ns
t
HD2
TXEN hold from rising edge of TXC 0 ns
t
CRS1
TXEN high to CRS asserted latency 72 ns
t
CRS2
TXEN low to CRS de-asserted latency 72 ns