Datasheet

 2016-2018 Microchip Technology Inc. DS00002202C-page 51
KSZ8081MNX/RNB
7.6 RMII Timing
FIGURE 7-6: RMII TIMING – DATA RECEIVED FROM RMII
FIGURE 7-7: RMII TIMING – DATA INPUT TO RMII
TABLE 7-5: MII RECEIVE TIMING (BASE100BASE-TX) PARAMETERS
Timing
Parameter
Description Min. Typ. Max. Units
t
P
RXC period — 40 — ns
t
WL
RXC pulse width low
—
20
—
ns
t
WH
RXC pulse width high
—
20
—
ns
t
OD
(RXDV, RXD[3:0], RXER) output delay from ris-
ing edge of RXC
16
21 25
ns
t
FLAT
CRS to (RXDV, RXD[3:0] latency
—
170
—
ns
t
CYC
REF_CLK
TXEN
TXD[1:0]
t
1
t
2
TRANSMIT TIMING
t
CYC
REF_CLK
CRS_DV
RXD[1:0]
RXER
t
OD
RECEIVE
TIMING