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ICS1893BF датащи(PDF) 116 Page - Renesas Technology Corp |
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ICS1893BF датащи(HTML) 116 Page - Renesas Technology Corp |
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116 / 133 page ![]() ICS1893BF, Rev. F, 5/13/10 May, 2010 116 Chapter 9 DC and AC Operating Conditions ICS1893BF Data Sheet - Release Copyright © 2009, IDT, Inc. All rights reserved. 9.5.7 MII Management Interface Timing Table 9-14 lists the significant time periods for the MII Management Interface timing (which consists of timings of signals on the MDC and MDIO pins). Figure 9-8 shows the timing diagram for the time periods. † The ICS1893BF is tested at 25 MHz (a 40-ns period) with a 50-pF load. Designs must account for all board loading of MDC. Figure 9-8. MII Management Interface Timing Diagram Table 9-14. MII Management Interface Timing Time Period Parameter Conditions Min. Typ. Max. Units t1 MDC Minimum High Time – 160 – – ns t2 MDC Minimum Low Time – 160 – – ns t3 MDC Period – 400† † – ns t4 MDC Rise Time to MDIO Valid – 0 – 300 ns t5 MDIO Setup Time to MDC – 10 – – ns t6 MDIO Hold Time after MDC – 10 – – ns MDC MDIO (Output) MDC MDIO (Input) t1 t2 t3 t4 t5 t6 |
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