Datasheet
KSZ8081MNX/RNB
DS00002202C-page 48 2016-2018 Microchip Technology Inc.
7.0 TIMING DIAGRAMS
7.1 MII SQE Timing (10BASE-T)
FIGURE 7-1: MII SQE TIMING (10BASE-T)
7.2 MII Transmit Timing (10BASE-T)
FIGURE 7-2: MII TRANSMIT TIMING (10BASE-T)
TABLE 7-1: MII SQE TIMING (10BASE-T) PARAMETERS
Timing Parameters Description Min. Typ. Max. Units
t
P
TXC period — 400 — ns
t
WL
TXC pulse width low
—
200
—
ns
t
WH
TXC pulse width high
—
200
—
ns
t
SQE
COL (SQE) delay after
TXEN de-asserted
—
2.2
—
µs
t
SQEP
COL (SQE) pulse duration
—
1.0
—
µs
TABLE 7-2: MII TRANSMIT TIMING (10BASE-T) PARAMETERS
Timing Parameters Description Min. Typ. Max. Units
t
P
TXC period — 400 — ns
t
WL
TXC pulse width low
—
200
—
ns
t
WH
TXC pulse width high
—
200
—
ns
t
SU1
TXD[3:0] setup to rising edge of TXC 120
— —
ns
t
SU2
TXEN setup to rising edge of TXC 120
— —
ns
t
WL
t
WH
t
P
t
SQE
t
SQEP
TXC
TXEN
COL
CRS
TXEN
TXD[3:0]
TXC
t
CRS1
t
WL
t
P
t
HD2
t
CRS2
t
WH
t
HD1
t
SU2
t
SU1