8.2.17 10BASE-T Receive Timing (Start of Packet)
1st SFD bit decoded
1
0
1
0
1
0
1
0
1
0
1
1
TPRD±
T2.17.1
CRS
RX_CLK
T2.17.2
RX_DV
T2.17.3
0000
Preamble
SFD
Data
RXD[3:0]
Parameter
Description
Notes
Min
Typ Max Units
T2.17.1
Carrier Sense Turn On Delay (PMD
Input Pair to CRS)
630 1000
ns
T2.17.2
T2.17.3
RX_DV Latency
10
8
bits
bits
Receive Data Latency
Measurement shown from SFD
Note: 10BASE-T RX_DV Latency is measured from first bit of preamble on the wire to the assertion of RX_DV
Note: 1 bit time = 100 ns in 10 Mb/s mode.
8.2.18 10BASE-T Receive Timing (End of Packet)
1
IDLE
0
1
PMD Input Pair
RX_CLK
T2.18.1
CRS
Parameter
Description
Carrier Sense Turn Off Delay
Notes
Min
Typ Max Units
T2.18.1
1.0
µs
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