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DM505 Datasheet(PDF) 168 Page - Texas Instruments |
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DM505 Datasheet(HTML) 168 Page - Texas Instruments |
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168 / 295 page ![]() 1 MDIO4 MDIO5 MDIO7 MDIO2 MDIO3 MDIO6 MDIO6 MDCLK MDIO (input) MDIO (output) SPRS91v_GMAC_07 168 DM505 SPRS976E – NOVEMBER 2016 – REVISED MAY 2018 www.ti.com Submit Documentation Feedback Specifications Copyright © 2016–2018, Texas Instruments Incorporated NOTE The Gigabit, Reduced and Media Independent Interface n (n = 0 to 1) are also referred to as RGMIIn 5.9.6.14.1 GMAC MDIO Interface Timings Table 5-63, Table 5-64 and Figure 5-51 present Timing Requirements for MDIO. Table 5-63. Timing Requirements for MDIO Input No PARAMETER DESCRIPTION MIN MAX UNIT 1 tc(MDC) Cycle time, MDC 400 ns 2 tw(MDCH) Pulse Duration, MDC High 160 ns 3 tw(MDCL) Pulse Duration, MDC Low 160 ns 4 tsu(MDIO-MDC) Setup time, MDIO valid before MDC High 90 ns 5 th(MDIO_MDC) Hold time, MDIO valid from MDC High 0 ns Table 5-64. Switching Characteristics Over Recommended Operating Conditions for MDIO Output No PARAMETER DESCRIPTION MIN MAX UNIT 6 tt(MDC) Transition time, MDC 5 ns 7 td(MDC-MDIO) Delay time, MDC High to MDIO valid 10 390 ns Figure 5-51. GMAC MDIO diagrams |
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