Fast Ethernet 10/100 Hex Transceiver with Full MII — LXT9763
Figure 22. 100BASE-TX Receive Timing (5B Mode)
0ns0ns
2502n5s0ns
TPTFPIFI
t4t4
t5t5
CRCSRS
t3t3
RXR_XD_VDV
t1t1
t2t2
RXRDX<D4<:04>:0>
RXR_XC_LCKLK
t6t6
t7t7
COCLOL
Table 24. 100BASE-TX Receive Timing Parameters (5B Mode)
1
Parameter
Sym
Min
Typ
Max
Units
Test Conditions
RXD<4:0>, RX_DV, RX_ER setup
to RX_CLK High
t1
10
–
–
ns
–
RXD<4:0>, RX_DV, RX_ER hold
from RX_CLK High
t2
10
–
–
ns
–
CRS asserted to RXD<4:0>, RX_DV
Receive start of “J” to CRS asserted
Receive start of “T” to CRS de-asserted
Receive start of “J” to COL asserted
Receive start of “T” to COL de-asserted
t3
t4
t5
t6
t7
–
–
–
–
–
4
–
–
–
–
–
BT
BT
BT
BT
BT
–
–
–
–
–
14
19
14
19
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
Datasheet
49