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STR910FAM32 数据表(PDF) 84 Page - STMicroelectronics |
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STR910FAM32 数据表(HTML) 84 Page - STMicroelectronics |
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84 / 101 page  Electrical characteristics STR91xFAx3x, STR91xFAx4x 84/101 Ethernet MII management timings Figure 26. Ethernet MII management timing diagram Ethernet MII transmit timings Figure 27. Ethernet MII transmit timing diagram 1 2 3 MDC MDIO output MDIO input Table 42. Ethernet MII management timing table Symbol Parameter Symbol Value Unit Min Max 1 MDIO delay from rising edge of MDC tc(MDIO) 2.83 ns 2 MDIO setup time to rising edge of MDC Tsu (MDIO) 2.70 ns 3 MDIO hold time from rising edge of MDC Th (MDIO) -2.03 ns 1 3 5 7 8 2 4 6 MII_TX_CLK MII_TX_EN MII_CRS MII_COL MII_TXD Table 43. Ethernet MII transmit timing table Symbol Parameter Symbol Value Unit Min Max 1 MII_TX_CLK high to MII_TX_EN valid tVAL(MII_TX_EN) 4.20 ns 2 MII_TX_CLK high to MII_TX_EN invalid Tinval(MII_TX_EN) 4.86 ns 3 MII_CRS valid to MII_TX_CLK high Tsu(MII_CRS) 0.61 ns 4 MII_TX_CLK high to MII_CRS invalid Th(MII_CRS) 0.00 ns 5 MII_COL valid to MII_TX_CLK high Tsu(MII_COL) 0.81 ns |
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