Datasheet

DataSFDPreamble0000
T2.17.3
T2.17.2
T2.17.1
1 0 1 0 1 0 1 0 1 0 1 1
TPRD±
CRS
RX-DV
RXD[3:0]
1st SFD bit decoded
TX_CLK
TX_EN
0 0
1 1
T2.16.1
T2.16.2
PMD Output
Pair
PMD Output
Pair
DP83849IF
www.ti.com SNOSAX8D –JUNE 2009–REVISED APRIL 2013
4.20 AC Specifications — 10BASE-T Transmit Timing (End of Packet)
Parameter Description Notes Min Typ Max Units
T2.16.1 End of Packet High Time 250 300 ns
(with '0' ending bit)
T2.16.2 End of Packet High Time 250 300 ns
(with '1' ending bit)
4.21 AC Specifications — 10BASE-T Receive Timing (Start of Packet)
(1)(2)
Parameter Description Notes Min Typ Max Units
T2.17.1 Carrier Sense Turn On Delay (PMD 630 1000 ns
Input Pair to CRS)
T2.17.2 RX_DV Latency 10 bits
T2.17.3 Receive Data Latency Measurement shown from SFD 8 bits
(1) 10BASE-T RX_DV Latency is measured from first bit of preamble on the wire to the assertion of RX_DV
(2) 1 bit time = 100 ns in 10 Mb/s mode.
Copyright © 2009–2013, Texas Instruments Incorporated Electrical Specifications 23
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