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DP83849IFVS/NOPB датащи(PDF) 23 Page - Texas Instruments |
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DP83849IFVS/NOPB датащи(HTML) 23 Page - Texas Instruments |
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23 / 108 page ![]() Data SFD Preamble 0000 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 Submit Documentation Feedback Product Folder Links: DP83849IF |
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