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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) 50 Page - Cirrus Logic |
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CS89712 датащи(HTML) 50 Page - Cirrus Logic |
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50 / 170 page  CS89712 50 DS502PP2 frame is pending and if the MAC is not in Backoff, transmission begins the 9.6 µs IPG). If no transmit packet is pending, the MAC continues to monitor the network. If activity is detected before a transmit frame is ready, the MAC defers to the transmitting station and resumes monitoring the network. Fig- ure 15 diagrams the simple deferral process. 2.26.5.4 Collision Resolution If a collision is detected while the Ethernet port is transmitting, the MAC responds in one of three ways depending on whether it is a normal collision (within the first 512 bits of transmission) or a late collision (after the first 512 bits of transmission): Transmit Frame Start Monitoring Network Activity IPG Timer = 6.4 µs? Network Active? Network Active? Start IPG Timer Network Active? Yes No Yes Yes Yes No No No No Wait 3.2 µs Yes Tx Frame Ready and Not in Backoff? Figure 14. Two-Part Deferral Tx Frame Ready and Not in Backoff? Transmit Frame Start Monitoring Network Activity Network Active? Network Active? Yes No Yes No No Yes Wait 9.6 µs Figure 15. Simple Deferral |
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