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DM385 Datasheet(PDF) 176 Page - Texas Instruments |
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DM385 Datasheet(HTML) 176 Page - Texas Instruments |
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176 / 281 page  1 RMREFCLK RM M M TXD1−R TXD0, R TXEN (Outputs) DM385, DM388 SPRS821D – MARCH 2013 – REVISED DECEMBER 2013 www.ti.com Table 8-18. Switching Characteristics Over Recommended Operating Conditions for EMAC RMII Transmit 10/100 Mbits/s (see Figure 8-15) OPP100/OPP120/ Turbo/Nitro NO. PARAMETER UNIT MIN MAX Delay time, EMAC[x]_RMREFCLK high to EMAC[x]_RMTXD[x] 1 td(RMREFCLK-RMTXD) 2.4 13 ns valid Delay time, EMAC[x]_RMREFCLK high to EMAC[x]_RMTXEN 2 tdd(RMREFCLK-RMTXEN) 2.4 13 valid Figure 8-15. EMAC Transmit Interface Timing RMII Operation 8.6.2.3 EMAC RGMII Electrical Data/Timing RGMII mode is not supported for OPP50. Table 8-19. Timing Requirements for EMAC[x]_RGRXC - RGMII Operation (see Figure 8-16) OPP100/OPP120/Turbo/Nitro NO. UNIT MIN MAX 10 Mbps 360 440 1 tc(RGRXC) Cycle time, EMAC[x]_RGRXC 100 Mbps 36 44 ns 1000 Mbps 7.2 8.8 10 Mbps 0.40*tc(RGRXC) 0.60*tc(RGRXC) 2 tw(RGRXCH) Pulse duration, EMAC[x]_RGRXC high 100 Mbps 0.40*tc(RGRXC) 0.60*tc(RGRXC) ns 1000 Mbps 0.45*tc(RGRXC) 0.55*tc(RGRXC) 10 Mbps 0.40*tc(RGRXC) 0.60*tc(RGRXC) 3 tw(RGRXCL) Pulse duration, EMAC[x]_RGRXC low 100 Mbps 0.40*tc(RGRXC) 0.60*tc(RGRXC) ns 1000 Mbps 0.45*tc(RGRXC) 0.55*tc(RGRXC) 10 Mbps 0.75 4 tt(RGRXC) Transition time, EMAC[x]_RGRXC 100 Mbps 0.75 ns 1000 Mbps 0.75 176 Peripheral Information and Timings Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: DM385 DM388 |
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