Datasheet

T2.16.1
IDLE
101
PMD Input
Pair
RX_CLK
CRS/CRS_DV
DataSFDPreamble0000
T2.15.3
T2.15.2
T2.15.1
1 0 1 0 1 0 1 0 1 0 1 1
PMD
Input Pair
CRS/CRS_DV
RX_DV
RXD[3:0]
1st SFD bit decoded
DP83640
www.ti.com SNOSAY8E –SEPTEMBER 2007–REVISED APRIL 2013
4.19 AC Specifications — 10BASE-T MII Receive Timing (Start of Packet)
Parameter Description Notes Min Typ Max Units
(1)
T2.15.1 Carrier Sense Turn On Delay (PMD 630 1000 ns
Input Pair to CRS)
T2.15.2 RX_DV Latency
(2)
10 bits
T2.15.3 Receive Data Latency Measurement shown from SFD 8 bits
(1) 1 bit time = 100 ns in 10 Mb/s mode.
(2) 10BASE-T RX_DV Latency is measured from first bit of preamble on the wire to the assertion of RX_DV
Figure 4-15. 10BASE-T MII Receive Timing (Start of Packet)
4.20 AC Specifications — 10BASE-T MII Receive Timing (End of Packet)
Parameter Description Notes Min Typ Max Units
T2.16.1 Carrier Sense Turn Off Delay 1.0 µs
Figure 4-16. 10BASE-T MII Receive Timing (End of Packet)
Copyright © 2007–2013, Texas Instruments Incorporated Electrical Specifications 29
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