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STR910FAM32X6 Datasheet(PDF) 81 Page - STMicroelectronics |
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STR910FAM32X6 Datasheet(HTML) 81 Page - STMicroelectronics |
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81 / 99 page  STR91xFAx32 STR91xFAx42 STR91xFAx44 Electrical characteristics 81/99 7.12 Communication interface electrical characteristics 7.12.1 10/100 Ethernet MAC electrical characteristics VDDQ = 2.7 - 3.6V, VDD = 1.65 - 2V, TA = -40 / 85 °C unless otherwise specified. Ethernet MII interface timings Figure 24. MII_RX_CLK and MII_TX_CLK timing diagram Figure 25. MDC timing diagram Table 39. MII_RX_CLK and MII_TX_CLK timing table Symbol Parameter Symbol Value Unit Min Max 1Cycle time tc(CLK) 40 ns 2 Pulse duration HIGH tHIGH(CLK) 40% 60% 3 Pulse duration LOW tLOW(CLK) 40% 60% 4 Transition time tt(CLK) 1 ns MII_RX_TCLK, MII_TX_CLK 1 2 3 4 4 1 2 3 4 4 MDC Table 40. MDC timing table Symbol Parameter Symbol Value Unit Min Max 1Cycle time tc(MDC) 266 ns 2 Pulse duration HIGH tHIGH(MDC) 40% 60% 3 Pulse duration LOW tLOW(MDC) 40% 60% 4 Transition time tt(MDC) 1 ns |
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