LXT971A 3.3V Dual-Speed Fast Ethernet Transceiver
Figure 32. 10BASE-T Receive Timing
RX_CLK
t
1
t2
t
3
RXD,
RX_DV,
RX_ER
t
5
t
4
CRS
t
6
t
t
7
9
TPFI
COL
t
8
Table 33. 10BASE-T Receive Timing Parameters
1
Parameter
Sym
Min
Typ
Max
Units2
Test Conditions
RXD, RX_DV, RX_ER Setup to
RX_CLK High
t1
10
–
–
ns
–
RXD, RX_DV, RX_ER Hold from
RX_CLK High
t2
t3
t4
10
4.2
5
–
–
–
–
ns
BT
BT
–
–
–
TPFIP/N in to RXD out (Rx latency)
6.6
32
CRS asserted to RXD, RX_DV,
RX_ER asserted
RXD, RX_DV, RX_ER de-asserted to
CRS de-asserted
t5
0.3
–
0.5
BT
–
TPFI in to CRS asserted
t6
t7
t8
t9
2
6
1
5
–
–
–
–
28
10
31
10
BT
BT
BT
BT
–
–
–
–
TPFI quiet to CRS de-asserted
TPFI in to COL asserted
TPFI quiet to COL de-asserted
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production
testing.
2. BT is the duration of one bit as transferred to and from the MAC and is the reciprocal of the bit rate.
10BASE-T bit time = 10-7 s or 100 ns.
Datasheet
65
Document #: 249414
Revision #: 002
Rev. Date: August 7, 2002
INTEL [ INTEL ]
