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STR91XF 数据表(PDF) 62 Page - STMicroelectronics |
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STR91XF 数据表(HTML) 62 Page - STMicroelectronics |
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62 / 72 page  Electrical characteristics STR91xF 62/72 Table 22. Ethernet MII management timing table Ethernet MII transmit timings Figure 19. Ethernet MII transmit timing diagram Table 23. Ethernet MII transmit 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 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 6 MII_TX_CLK high to MII_COL invalid Th(MII_COL) 0.00 ns 7 MII_TX_CLK high to MII_TXD valid tVAL(MII_TXD) 5.02 ns 8 MII_TXCLK high to MII_TXD invalid Tinval(MII_TXD 5.02 ns 1 3 5 7 8 2 4 6 MII_TX_CLK MII_TX_EN MII_CRS MII_COL MII_TXD |
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