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AM79C978VC/W Fiches technique(PDF) 226 Page - Advanced Micro Devices |
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AM79C978VC/W Fiches technique(HTML) 226 Page - Advanced Micro Devices |
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226 / 261 page ![]() 226 Am79C978 SWITCHING CHARACTERISTICS: BUS INTERFACE (CONCLUDED) 10BASE-T Note: RX± pulses narrower than tPWDRD (min) will maintain internal Carrier Sense on. RX± pulses wider than tPWKRD (max) will turn internal Carrier Sense off. Figure 54. 10 Mbps Transmit (TX±) Timing Diagram Figure 55. 10 Mbps Receive (RX±) Timing Diagram Symbol Parameter Description Test Conditions Min Max Unit tTETD Transmit End of Transmission 250 375 ns tPWKRD RX± Pulse Width Maintain/Turn Off Threshold |VIN| > |VTHS| (Note 1) 136 200 ns TX ± tTETD 22206B-57 RX ± t(PWKRD) tPWKRD VTSQ+ VTSQ- t(PWKRD) 22206B-58 |
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