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STM32F427AI 数据表(PDF) 157 Page - STMicroelectronics |
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STM32F427AI 数据表(HTML) 157 Page - STMicroelectronics |
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157 / 240 page  DS9405 Rev 12 157/240 STM32F427xx STM32F429xx Electrical characteristics 197 Figure 49. Ethernet MII timing diagram CAN (controller area network) interface Refer to Section 6.3.17: I/O port characteristics for more details on the input/output alternate function characteristics (CANx_TX and CANx_RX). ai15668b MII_RX_CLK MII_RXD[3:0] MII_RX_DV MII_RX_ER td(TXEN) td(TXD) tsu(RXD) tsu(ER) tsu(DV) tih(RXD) tih(ER) tih(DV) MII_TX_CLK MII_TX_EN MII_TXD[3:0] Table 74. Dynamics characteristics: Ethernet MAC signals for MII(1) Symbol Parameter Condition Min Typ Max Unit tsu(RXD) Receive data setup time 1.71 V < VDD < 3.6 V 9- - ns tih(RXD) Receive data hold time 10 - - tsu(DV) Data valid setup time 9 - - tih(DV) Data valid hold time 8 - - tsu(ER) Error setup time 6 - - tih(ER) Error hold time 8 - - td(TXEN) Transmit enable valid delay time 2.7 V < VDD < 3.6 V 8 10 14 1.71 V < VDD < 3.6 V 8 10 16 td(TXD) Transmit data valid delay time 2.7 V < VDD < 3.6 V 7.5 10 15 1.71 V < VDD < 3.6 V 7.5 10 17 1. Evaluated by characterization. |
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