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STM32F405 数据表(PDF) 132 Page - STMicroelectronics |
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STM32F405 数据表(HTML) 132 Page - STMicroelectronics |
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132 / 204 page  Electrical characteristics STM32F405xx, STM32F407xx 132/203 DS8626 Rev 9 Figure 47. Ethernet RMII timing diagram Table 66 gives the list of Ethernet MAC signals for MII and Figure 47 shows the corresponding timing diagram. Figure 48. Ethernet MII timing diagram Table 65. Dynamic characteristics: Ethernet MAC signals for RMII Symbol Rating Min Typ Max Unit tsu(RXD) Receive data setup time 2 - - ns tih(RXD) Receive data hold time 1 - - ns tsu(CRS) Carrier sense set-up time 0.5 - - ns tih(CRS) Carrier sense hold time 2 - - ns td(TXEN) Transmit enable valid delay time 8 9.5 11 ns td(TXD) Transmit data valid delay time 8.5 10 11.5 ns RMII_REF_CLK RMII_TX_EN RMII_TXD[1:0] RMII_RXD[1:0] RMII_CRS_DV td(TXEN) td(TXD) tsu(RXD) tsu(CRS) tih(RXD) tih(CRS) ai15667 |
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