Fast Ethernet 10/100 Quad Transceivers — LXT974/LXT975
Figure 30. MII - 10BASE-T Receive Timing
RX_CLK
t
1
t2
t
3
RXD,
RX_DV,
RX_ER
t
5
t
4
CRS
TPI
t
6
t
t
7
9
t
8
COL
Table 35. MII - 10BASE-T Receive Timing Parameters
1
Parameter
Sym
Min
Typ
Max
Units
RXD, RX_DV, RX_ER setup to RX_CLK High
RXD, RX_DV, RX_ER hold from RX_CLK High
TPI in to RXD out (Rx latency)
t1
t2
t3
t4
t5
t6
t7
t8
t9
10
10
–
–
–
–
–
–
–
ns
ns
732
692
6
BT
BT
BT
BT
BT
BT
BT
CRS asserted to RXD, RX_DV, RX_ER asserted
RXD, RX_DV, RX_ER de-asserted to CRS de-asserted
TPI in to CRS asserted
0
0
2.5 - 5.5
0
4
18
4
5
TPI quiet to CRS de-asserted
0
19
5
TPI in to COL asserted
0
TPI quiet to COL de-asserted
0
18
19
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
2. CRS is asserted. RXD/RX_DV are driven at the start of SFD (64 BT).
Datasheet
57
INTEL [ INTEL ]
