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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ICS1893CFILF 데이터시트(PDF) 119 Page - Renesas Technology Corp |
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ICS1893CFILF 데이터시트(HTML) 119 Page - Renesas Technology Corp |
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119 / 127 page  Chapter 9 DC and AC Operating Conditions ICS1893CF, Rev. K, 05/13/10 May, 2010 119 ICS1893CF Data Sheet Rev. J - Release Copyright © 2009, Integrated Device Technology, Inc. All rights reserved. 9.5.17 10Base-T: Heartbeat Timing (SQE) Table 9-24 lists the significant time periods for the 10Base-T heartbeat (that is, the Signal Quality Error). The time periods consist of timings of signals on the following pins: • TXEN • TXCLK • COL Figure 9-18 shows the timing diagram for the time periods. Note: 1. For more information on 10Base-T SQE operations, see Section 6.5.10, “10Base-T Operation: SQE Test”. 2. In 10Base-T mode, one bit time = 100 ns. Figure 9-18. 10Base-T Heartbeat (SQE) Timing Diagram Table 9-24. 10Base-T Heartbeat (SQE) Timing Time Period Parameter Conditions Min. Typ. Max. Units t1 COL Heartbeat Assertion Delay from TXEN De-Assertion 10Base-T Half Duplex – 850 1500 ns t2 COL Heartbeat Assertion Duration 10Base-T Half Duplex – 1000 1500 ns t2 t1 TXEN TXCLK COL |
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