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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS89712 датащи(PDF) 159 Page - Cirrus Logic |
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CS89712 датащи(HTML) 159 Page - Cirrus Logic |
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159 / 170 page  CS89712 DS502PP2 159 ETHERNET TIMING CHARACTERISTICS Parameter Symbol Min Typ Max Unit 10BASE-T Receive Allowable Received Jitter at Bit Cell Center tTRX1 -- ±13.5 ns Allowable Received Jitter at Bit Cell Boundary tTRX2 - - ±13.5 ns Carrier Sense Assertion Delay tTRX3 -540 - ns Invalid Preamble Bits after Assertion of Carrier Sense tTRX4 1- 2 bits Carrier Sense Deassertion Delay tTRX5 -270 - ns 10BASE-T Link Integrity First Transmitted Link Pulse after Last Transmitted Packet tLN1 816 24 ms Time Between Transmitted Link Pulses tLN2 816 24 ms Width of Transmitted Link Pulses tLN3 60 100 200 ns Minimum Received Link Pulse Separation tLN4 2- 7 ms Maximum Received Link Pulse Separation tLN5 25 - 150 ms Last Receive Activity to Link Fail (Link Loss Timer) tLN6 50 - 150 ms Ethernet EEPROM EESK Setup time relative to EECS tSKS 100 - - ns EECS Setup time wrt ↑ EESK tCCS 250 - - ns EEDataOut Setup time wrt ↑ EESK tDIS 250 - - ns EEDataOut Hold time wrt ↑ EESK tDIH 500 - - ns EEDataIn Hold time wrt ↑ EESK tDH 10 - - ns EECS Hold time wrt ↓ EESK tCSH 100 - - ns Min EECS Low time during programming tCS 1000 - - ns tTRX3 RXD± tTRX5 tTRX4 tTRX1 tTRX2 Carrier Sense (internal) Figure 34. 10BASE-T Receive |
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