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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DP83848JSQ датащи(PDF) 68 Page - Texas Instruments |
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DP83848JSQ датащи(HTML) 68 Page - Texas Instruments |
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68 / 80 page  67 www.national.com 8.2.9 100BASE-TX Receive Packet Latency Timing Note: Carrier Sense On Delay is determined by measuring the time from the first bit of the “J” code group to the assertion of Carrier Sense. Note: 1 bit time = 10 ns in 100 Mb/s mode Note: PMD Input Pair voltage amplitude is greater than the Signal Detect Turn-On Threshold Value. 8.2.10 100BASE-TX Receive Packet Deassertion Timing Note: Carrier Sense Off Delay is determined by measuring the time from the first bit of the “T” code group to the deasser- tion of Carrier Sense. Note: 1 bit time = 10 ns in 100 Mb/s mode Parameter Description Notes Min Typ Max Units T2.9.1 Carrier Sense ON Delay 100 Mb/s Normal mode 20 bits T2.9.2 Receive Data Latency 100 Mb/s Normal mode 24 bits CRS RXD[3:0] PMD Input Pair RX_DV RX_ER IDLE Data T2.9.1 T2.9.2 (J/K) Parameter Description Notes Min Typ Max Units T2.10.1 Carrier Sense OFF Delay 100 Mb/s Normal mode 24 bits CRS T2.10.1 PMD Input Pair DATA IDLE (T/R) |
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